Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp
On 21/10/2011 03:00, Bob DeRemer wrote: While I can appreciate the desire to never use Windows, that isn't reality in many of the industries that use our product, so running Tomcat on windows can't be considered an oddity or edge case. If it is, we better look for another app server. If that were the case, the Tomcat devs wouldn't have put the investment they have into the Windows installer in recent months (auto detection of 32 or 64 bit JRE, greater control over ports, multiple service installs of the same version, ...) With regard to finding a solution, I'll try the antiJarLocking setting, but I don't have any problem with any other JARS, so I don't hold out much hope for this fixing my problem. I may look at upgrading to JDK 7 - which has added a close method to the URLClassLoader. Perhaps this might fix it. Maybe. If anyone else has any other ideas why ONLY JARs added via the addURL hack I've shown below don't get unloaded when the WEBAPP is shutdown - vs stopping Tomcat completely, I would greatly appreciate it. You need to understand the root cause. I'd recommend getting a profiler (I use YourKit since they give free copies to Tomcat committers) and finding out exactly what is holding references to those JARs. Once you know that the next questions are 1. What creates those references and 2. How to get rid of them. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: FarmWarDeployer undeploy on slave node when tomcat restart
Tried also on Tomcat 7.0.22 Same behaviour: when i restart node1, FarmWarDeployer undeploy my war both from node1 and node2, but re-deploy it only on node1. If I touch my war in my watchDir on node1, tomcat redeploys it correctly on both nodes... Is tomcat clustering used? If so, does anybody use FarmWarDeployer ? Many thanks, Marco On Thu, Oct 20, 2011 at 6:21 PM, Marco Betti m.be...@gmail.com wrote: Hi all, I'm new to the list. I'm trying to configure tomcat 6.0.33 clustering. Session replication is ok. I've a problem with FarmWarDeployer. I found that: 1. You have to place the Cluster node under the Host element. Tomcat 6.0.x complains that the element Cluster/Deployer element is not understood at the Engine level. 2. One node needs to have watchEnabled=true, all other nodes watchEnabled=false 3. deployDir is the same as appBase and after I found this post that confirmed these points to me: http://www.mail-archive.com/users@tomcat.apache.org/msg80374.html The problem is the following: let node1 be the master (watchEnabled=true) and node2 the slave (watchEnabled=false) This is my configuration: Deployer className=org.apache.catalina.ha.deploy.FarmWarDeployer tempDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/temp/ deployDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/webapps/ watchDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/farm/ watchEnabled=true/ If I copy a war to watchDir of node1 evertything works fine and cluster deploy is achieved. When i restart node1, FarmWarDeployer undeploy my war both from node1 and node2, but re-deploy it only on node1. node1 log: INFO: Cluster wide remove of web app /example Oct 20, 2011 5:50:46 PM org.apache.catalina.startup.HostConfig checkResources INFO: Undeploying context [/example] Oct 20, 2011 5:50:46 PM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive example.war node2 log: INFO: Undeploying context [/example] Oct 20, 2011 5:50:47 PM org.apache.catalina.ha.deploy.FarmWarDeployer messageReceived SEVERE: Application /example in used. touch war file example.war again! Obviously, if I touch my war in my watchDir on node1, tomcat redeploys it correctly on both nodes... but this cannot be the solution... Is it a known problem? Could anyone help me? Many thanks, Marco
Re: Undeploy fails with Tomcat 7 manager application
Mark Thomas markt at apache.org writes: On 18/10/2011 13:02, Bjoern Raupach wrote: Hi group, we are using Tomcat 7.0.21 on Windows XP with the manager application for remote deployment. Tomcat is configured to unpack wars. Deploying works. However undeploy fails for the following reason: FAIL - Unable to delete [C:\Programme\Apache Software Foundation\Tomcat 7.0 \webapps\mywebapp]. The continued presence of this file may cause problems. The exploded WAR file mywebapp is still in the webapp folder. The war file gets deleted. Now, we can't even redeploy or deploy. We have to manually delete the folder mywebapp. Any ideas? Fix the memory leaks that are causing one or more files to be left open in the unpacked web application. Mark Hello, I am too having this problem because the logfile which is created by log4j cannot be deleted since tomcat7 is still accessing it. I don't think this would be called a memory leak!? Even when trying to delete it manually in the file browser it doesn't work. After tomcat is stopped the logfile can be deleted manually. Is this a bug or can it somehow be fixed? Regards, Mike - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [OT?] control of session timed out with tomcat
Mark Thomas wrote:
On 20/10/2011 17:01, Tim Watts wrote:
On Thu, 2011-10-20 at 16:35 +0100, Mark Thomas wrote:
On 20/10/2011 16:22, André Warnier wrote:
Hassan Schroeder wrote:
On Thu, Oct 20, 2011 at 7:52 AM, André Warnier a...@ice-sa.com wrote:
1) Tomcat (probably) doesn't spend its time all the time scanning stored
sessions to see if one has expired, and deleting it.
Actually, it does. That's what session listeners depend on.
So, for example, I can have a ShoppingCart with a method like
public void valueUnbound(HttpSessionBindingEvent httpsessionbindingevent)
{
empty(); /* remove reserved status from items */
}
If the session times out without the cart contents being purchased,
the cart returns any items it contains to inventory. Very handy :-)
You mean that if there are 500 sessions active, Tomcat spends its time
checking all of them repeatedly on the off-chance that one has expired ?
It is handled by the background processing thread. By default that
thread runs every 10 seconds and ManagerBase triggers a session
expiration check every 6 runs by default. So in short, they are checked
roughly every 60s. The test is pretty simple so it doesn't take very
long at all.
Or is there a smarter algorithm implemented there ?
Such as? I'm open to ideas here (maybe not for this exact problem but
certainly the general one).
Not necessarily claiming better but:
* find the oldest session
This can change dynamically since application code can change the
session expiration time at any point.
* go to sleep until it's ready to expire (since you know nothing
interesting will happen before then)
* wake up and expire sessions that need expiring
* repeat
Of course, this would require a dedicated thread. If the background
thread handles more tasks than just expiring sessions there's probably
not much gain in doing this approach. Or you could use the 'find oldest
session' value to compute how many work cycles to skip until the next
actual check. Is the complexity worth the savings in CPU cycles? Eh,
probably a wash. Could set a minimum threshold and only use the computed
value if it's greater than the threshold. Incorporate the computation as
part of the session scan.
But you did ask... :-)
If session expiration time was constant, this would be fine.
Unfortunately, that is not the case.
How about..
I am assuming that at each access to the application, Tomcat updates the expiration time
of the session if any (that is, it sets a new date/time at which this session will be
considered as expired, being now + timeout).
So Tomcat, at any time, could maintain an ordered list of sessions with their timeout
timestamps (sorted by increasing expiration timestamp).
Now whenever the background thread goes into its check for expired sessions cycle, it
could start at the beginning of the sorted list, and stop as soon as it encounters an
entry with an expiration time which is later than now, because any entry beyond that
point is of course unexpired.
The sorted list needs to contain only the session-id and current expiration timestamp, so
it should not be that costly in terms of memory. (*)
In my personal experience, systems nowadays tend to be limited more by their disk I/O
speed than by CPU usage. Despite the more complex logic required by keeping the ordered
list ordered, and considering that sessions are usually created/kept for a considerable
length of time, I have a feeling that this might provide a performance boost, all the more
important as the number of sessions increases.
Also, when checking a session for expiration, Tomcat would not actually need to read each
session's info to get its expiration time and decide to delete the session. It could just
check the entry in the list, and delete the session info immediately if it is expired,
without needing to read it.
(*) I would even not be surprised if there existed already in memory some form of table
representing the current sessions.
-
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Re: Undeploy fails with Tomcat 7 manager application
On 21/10/2011 09:58, Mike wrote: Mark Thomas markt at apache.org writes: On 18/10/2011 13:02, Bjoern Raupach wrote: Hi group, we are using Tomcat 7.0.21 on Windows XP with the manager application for remote deployment. Tomcat is configured to unpack wars. Deploying works. However undeploy fails for the following reason: FAIL - Unable to delete [C:\Programme\Apache Software Foundation\Tomcat 7.0 \webapps\mywebapp]. The continued presence of this file may cause problems. The exploded WAR file mywebapp is still in the webapp folder. The war file gets deleted. Now, we can't even redeploy or deploy. We have to manually delete the folder mywebapp. Any ideas? Fix the memory leaks that are causing one or more files to be left open in the unpacked web application. Mark Hello, I am too having this problem because the logfile which is created by log4j cannot be deleted since tomcat7 is still accessing it. I don't think this would be called a memory leak!? Even when trying to delete it manually in the file browser it doesn't work. After tomcat is stopped the logfile can be deleted manually. Is this a bug or can it somehow be fixed? Where is the log file created? Why are you trying to delete it? Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [OT?] control of session timed out with tomcat
On 21/10/2011 10:05, André Warnier wrote: I am assuming that at each access to the application, Tomcat updates the expiration time of the session if any (that is, it sets a new date/time at which this session will be considered as expired, being now + timeout). Rather than making incorrect assumptions, you could check the source code. So Tomcat, at any time, could maintain an ordered list of sessions with their timeout timestamps (sorted by increasing expiration timestamp). That is do-able. Now whenever the background thread goes into its check for expired sessions cycle, it could start at the beginning of the sorted list, and stop as soon as it encounters an entry with an expiration time which is later than now, because any entry beyond that point is of course unexpired. The sorted list needs to contain only the session-id and current expiration timestamp, so it should not be that costly in terms of memory. (*) In my personal experience, systems nowadays tend to be limited more by their disk I/O speed than by CPU usage. Despite the more complex logic required by keeping the ordered list ordered, and considering that sessions are usually created/kept for a considerable length of time, I have a feeling that this might provide a performance boost, all the more important as the number of sessions increases. Also, when checking a session for expiration, Tomcat would not actually need to read each session's info to get its expiration time and decide to delete the session. It could just check the entry in the list, and delete the session info immediately if it is expired, without needing to read it. With this approach the question is which is faster: a) iterating all of the sessions once a minute (or frequency of choice) and discarding all those with (now - last accessed) timeout b) maintaining a list of sessions ordered by expiration time which is updated on every request associated with a session I have a hard time believing that: 1. b) isn't significantly more expensive 2. b) doesn't have all sorts of issues in a multi-threaded environment Hard data will convince me otherwise but at this point I suspect b) is considerably worse. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
docBase= and Environment/ in server.xml
Hy everibody, in my Tomcat 5.5 instance I'm trying to set a webapp as the root (docBase=) webapp so that when users connect to http://server:port/ will not respond manager webapp. I've done this by adding the tag Context path= docBase=myWebApp / in server.xml, but I can't access this webapp because ResourceLink / defined in context.xml can't access Environment / defined in server.xml. I can I solve this problem? Thanks. Gabriele.
Re: FarmWarDeployer undeploy on slave node when tomcat restart
I checked FarmWarDeployer's code. When WAR is updated, FarmWarDeployer sends UndeployMessage and sends FileMessage after that. The node which received UndeployMessage undeploys war. The node which received FileMessage deploys war. If FileMessage is received while processing UndeployMessage, the following error messages will be outputted. SEVERE: Application /example in used. touch war file example.war again! In the case of asynchronous replication (default), FileMessage may be received while processing UndeployMessage. I think that it may be better to process updated war by one message. Although I consider correction of a code, there is one work around. Workaround is change in synchronous mode. Please try the following. Cluster className=org.apache.catalina.ha.tcp.SimpleTcpCluster channelSendOptions=6 2011/10/21 Marco Betti m.be...@gmail.com: Tried also on Tomcat 7.0.22 Same behaviour: when i restart node1, FarmWarDeployer undeploy my war both from node1 and node2, but re-deploy it only on node1. If I touch my war in my watchDir on node1, tomcat redeploys it correctly on both nodes... Is tomcat clustering used? If so, does anybody use FarmWarDeployer ? Many thanks, Marco On Thu, Oct 20, 2011 at 6:21 PM, Marco Betti m.be...@gmail.com wrote: Hi all, I'm new to the list. I'm trying to configure tomcat 6.0.33 clustering. Session replication is ok. I've a problem with FarmWarDeployer. I found that: 1. You have to place the Cluster node under the Host element. Tomcat 6.0.x complains that the element Cluster/Deployer element is not understood at the Engine level. 2. One node needs to have watchEnabled=true, all other nodes watchEnabled=false 3. deployDir is the same as appBase and after I found this post that confirmed these points to me: http://www.mail-archive.com/users@tomcat.apache.org/msg80374.html The problem is the following: let node1 be the master (watchEnabled=true) and node2 the slave (watchEnabled=false) This is my configuration: Deployer className=org.apache.catalina.ha.deploy.FarmWarDeployer tempDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/temp/ deployDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/webapps/ watchDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/farm/ watchEnabled=true/ If I copy a war to watchDir of node1 evertything works fine and cluster deploy is achieved. When i restart node1, FarmWarDeployer undeploy my war both from node1 and node2, but re-deploy it only on node1. node1 log: INFO: Cluster wide remove of web app /example Oct 20, 2011 5:50:46 PM org.apache.catalina.startup.HostConfig checkResources INFO: Undeploying context [/example] Oct 20, 2011 5:50:46 PM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive example.war node2 log: INFO: Undeploying context [/example] Oct 20, 2011 5:50:47 PM org.apache.catalina.ha.deploy.FarmWarDeployer messageReceived SEVERE: Application /example in used. touch war file example.war again! Obviously, if I touch my war in my watchDir on node1, tomcat redeploys it correctly on both nodes... but this cannot be the solution... Is it a known problem? Could anyone help me? Many thanks, Marco -- Keiichi.Fujino - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [OT?] control of session timed out with tomcat
Mark Thomas wrote: On 21/10/2011 10:05, André Warnier wrote: I am assuming that at each access to the application, Tomcat updates the expiration time of the session if any (that is, it sets a new date/time at which this session will be considered as expired, being now + timeout). Rather than making incorrect assumptions, you could check the source code. So Tomcat, at any time, could maintain an ordered list of sessions with their timeout timestamps (sorted by increasing expiration timestamp). That is do-able. Now whenever the background thread goes into its check for expired sessions cycle, it could start at the beginning of the sorted list, and stop as soon as it encounters an entry with an expiration time which is later than now, because any entry beyond that point is of course unexpired. The sorted list needs to contain only the session-id and current expiration timestamp, so it should not be that costly in terms of memory. (*) In my personal experience, systems nowadays tend to be limited more by their disk I/O speed than by CPU usage. Despite the more complex logic required by keeping the ordered list ordered, and considering that sessions are usually created/kept for a considerable length of time, I have a feeling that this might provide a performance boost, all the more important as the number of sessions increases. Also, when checking a session for expiration, Tomcat would not actually need to read each session's info to get its expiration time and decide to delete the session. It could just check the entry in the list, and delete the session info immediately if it is expired, without needing to read it. With this approach the question is which is faster: a) iterating all of the sessions once a minute (or frequency of choice) and discarding all those with (now - last accessed) timeout b) maintaining a list of sessions ordered by expiration time which is updated on every request associated with a session I have a hard time believing that: 1. b) isn't significantly more expensive 2. b) doesn't have all sorts of issues in a multi-threaded environment Hard data will convince me otherwise but at this point I suspect b) is considerably worse. Allright, so how about a half-way house to start with ? Keep the list in some thread-safe table, indexed by session-id, and just scan the table. Updating the corresponding session entry at each request should be cheap. Of course in all this, my basic assumption is that currently, Tomcat keeps session information (including the expiration data) in some location which requires an I/O action to access. If so, an immediate benefit of having a table in memory, may be that when a request comes in with a session-id, the check of whether this session-id is still valid may be speeded up significantly (as opposed to try to actually get the session info through an I/O and maybe failing). And even if found in the table, the check on the expiration time would be quick too. And if it is expired, deleting the entry from the table, and deleting the session info through an I/O, may still be faster than first retrieving the session info from disk. Re-thinking about the above, an easier way to achieve a similar effect, may be to arrange to store all session info onto something like a RAM-disk of course. Basically my feeling is this : assuming for example 1000 on-going sessions, the background thread needs to do at least 1000 I/O's (and probably many more) each time it checks for session expiration. And this only to compare now with the session's expiration data. Intuitively, this seems like a significant waste of I/O bandwidth, which could be avoided at the cost of a bit of RAM. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [OT?] control of session timed out with tomcat
On 21/10/2011 11:42, André Warnier wrote: Allright, so how about a half-way house to start with ? Keep the list in some thread-safe table, indexed by session-id, and just scan the table. Updating the corresponding session entry at each request should be cheap. Of course in all this, my basic assumption is that currently, Tomcat keeps session information (including the expiration data) in some location which requires an I/O action to access. That assumption is incorrect. Which pretty much invalidates the rest of the points below. Again, I *strongly* encourage you to look at the current implementation before suggesting improvements. Mark If so, an immediate benefit of having a table in memory, may be that when a request comes in with a session-id, the check of whether this session-id is still valid may be speeded up significantly (as opposed to try to actually get the session info through an I/O and maybe failing). And even if found in the table, the check on the expiration time would be quick too. And if it is expired, deleting the entry from the table, and deleting the session info through an I/O, may still be faster than first retrieving the session info from disk. Re-thinking about the above, an easier way to achieve a similar effect, may be to arrange to store all session info onto something like a RAM-disk of course. Basically my feeling is this : assuming for example 1000 on-going sessions, the background thread needs to do at least 1000 I/O's (and probably many more) each time it checks for session expiration. And this only to compare now with the session's expiration data. Intuitively, this seems like a significant waste of I/O bandwidth, which could be avoided at the cost of a bit of RAM. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp
Hi Mark, With regard to using Tomcat in production, that was meant sarcastically - the team has done a nice job on later Tomcat 6 and Tomcat 7 32/64-bit installations - including Windows Service support, etc. - nice work. With regard to using YourKit, I have a licensed copy, but must be missing something - where can I look to see what is holding a reference to the JAR? I've used it for memory analysis and CPU profiling - primarily, but I'm not sure where to look for JAR references. Thanks, Bob -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Friday, October 21, 2011 2:46 AM To: Tomcat Users List Subject: Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp On 21/10/2011 03:00, Bob DeRemer wrote: While I can appreciate the desire to never use Windows, that isn't reality in many of the industries that use our product, so running Tomcat on windows can't be considered an oddity or edge case. If it is, we better look for another app server. If that were the case, the Tomcat devs wouldn't have put the investment they have into the Windows installer in recent months (auto detection of 32 or 64 bit JRE, greater control over ports, multiple service installs of the same version, ...) With regard to finding a solution, I'll try the antiJarLocking setting, but I don't have any problem with any other JARS, so I don't hold out much hope for this fixing my problem. I may look at upgrading to JDK 7 - which has added a close method to the URLClassLoader. Perhaps this might fix it. Maybe. If anyone else has any other ideas why ONLY JARs added via the addURL hack I've shown below don't get unloaded when the WEBAPP is shutdown - vs stopping Tomcat completely, I would greatly appreciate it. You need to understand the root cause. I'd recommend getting a profiler (I use YourKit since they give free copies to Tomcat committers) and finding out exactly what is holding references to those JARs. Once you know that the next questions are 1. What creates those references and 2. How to get rid of them. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp
On 21/10/2011 12:22, Bob DeRemer wrote: Hi Mark, With regard to using Tomcat in production, that was meant sarcastically - the team has done a nice job on later Tomcat 6 and Tomcat 7 32/64-bit installations - including Windows Service support, etc. - nice work. That comment was more aimed at the archives than you ;) With regard to using YourKit, I have a licensed copy, but must be missing something - where can I look to see what is holding a reference to the JAR? I've used it for memory analysis and CPU profiling - primarily, but I'm not sure where to look for JAR references. File locks can be tricky to pin down. I usually do something along the lines of: 1. Take a memory snapshot 2. Switch to the object view 3. Search for the name of the JAR 4. Trace the GC roots of a promising looking object Normally, the JAR name appears in a String for a JarFile or File object and that traces back to whatever is holding the reference. I'd be happy to take a look at the snapshot for you if you can put the snapshot somewhere where I can download it. Mark Thanks, Bob -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Friday, October 21, 2011 2:46 AM To: Tomcat Users List Subject: Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp On 21/10/2011 03:00, Bob DeRemer wrote: While I can appreciate the desire to never use Windows, that isn't reality in many of the industries that use our product, so running Tomcat on windows can't be considered an oddity or edge case. If it is, we better look for another app server. If that were the case, the Tomcat devs wouldn't have put the investment they have into the Windows installer in recent months (auto detection of 32 or 64 bit JRE, greater control over ports, multiple service installs of the same version, ...) With regard to finding a solution, I'll try the antiJarLocking setting, but I don't have any problem with any other JARS, so I don't hold out much hope for this fixing my problem. I may look at upgrading to JDK 7 - which has added a close method to the URLClassLoader. Perhaps this might fix it. Maybe. If anyone else has any other ideas why ONLY JARs added via the addURL hack I've shown below don't get unloaded when the WEBAPP is shutdown - vs stopping Tomcat completely, I would greatly appreciate it. You need to understand the root cause. I'd recommend getting a profiler (I use YourKit since they give free copies to Tomcat committers) and finding out exactly what is holding references to those JARs. Once you know that the next questions are 1. What creates those references and 2. How to get rid of them. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp
Thanks Mark, I appreciate the offer. Let me dig into a bit today - based on your steps. if I can't get anywhere, I'll gladly take you up on your offer. What is the best way to communicate out-of-band if I need to get you a snapshot? -bob -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Friday, October 21, 2011 7:42 AM To: Tomcat Users List Subject: Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp On 21/10/2011 12:22, Bob DeRemer wrote: Hi Mark, With regard to using Tomcat in production, that was meant sarcastically - the team has done a nice job on later Tomcat 6 and Tomcat 7 32/64-bit installations - including Windows Service support, etc. - nice work. That comment was more aimed at the archives than you ;) With regard to using YourKit, I have a licensed copy, but must be missing something - where can I look to see what is holding a reference to the JAR? I've used it for memory analysis and CPU profiling - primarily, but I'm not sure where to look for JAR references. File locks can be tricky to pin down. I usually do something along the lines of: 1. Take a memory snapshot 2. Switch to the object view 3. Search for the name of the JAR 4. Trace the GC roots of a promising looking object Normally, the JAR name appears in a String for a JarFile or File object and that traces back to whatever is holding the reference. I'd be happy to take a look at the snapshot for you if you can put the snapshot somewhere where I can download it. Mark Thanks, Bob -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Friday, October 21, 2011 2:46 AM To: Tomcat Users List Subject: Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp On 21/10/2011 03:00, Bob DeRemer wrote: While I can appreciate the desire to never use Windows, that isn't reality in many of the industries that use our product, so running Tomcat on windows can't be considered an oddity or edge case. If it is, we better look for another app server. If that were the case, the Tomcat devs wouldn't have put the investment they have into the Windows installer in recent months (auto detection of 32 or 64 bit JRE, greater control over ports, multiple service installs of the same version, ...) With regard to finding a solution, I'll try the antiJarLocking setting, but I don't have any problem with any other JARS, so I don't hold out much hope for this fixing my problem. I may look at upgrading to JDK 7 - which has added a close method to the URLClassLoader. Perhaps this might fix it. Maybe. If anyone else has any other ideas why ONLY JARs added via the addURL hack I've shown below don't get unloaded when the WEBAPP is shutdown - vs stopping Tomcat completely, I would greatly appreciate it. You need to understand the root cause. I'd recommend getting a profiler (I use YourKit since they give free copies to Tomcat committers) and finding out exactly what is holding references to those JARs. Once you know that the next questions are 1. What creates those references and 2. How to get rid of them. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Regarding thread pool utilization monitoring using ThreadPool MBeans
Hi, I'm using Tomcat 7.0.20. I'm writing java code for automated Thread utilization monitoring and alert system. I'm struggling to find the Mbean descriptor for Mbeans under Catalina.ThreadPool. Can anyone provide any reference? The big question I've is what the currentThreadCount indicates if these are no. of active threads then what is currentThreadsBusy, also minSpareThreads, maxSpareThreads, acceptorThreadCount. I tried to find the descriptors in Tomcat Source Code but didn't get any. Any help on this is really appreciated. Regards, Akshay
Re: [OT?] control of session timed out with tomcat
Mark Thomas wrote: On 21/10/2011 11:42, André Warnier wrote: Allright, so how about a half-way house to start with ? Keep the list in some thread-safe table, indexed by session-id, and just scan the table. Updating the corresponding session entry at each request should be cheap. Of course in all this, my basic assumption is that currently, Tomcat keeps session information (including the expiration data) in some location which requires an I/O action to access. That assumption is incorrect. Which pretty much invalidates the rest of the points below. Again, I *strongly* encourage you to look at the current implementation before suggesting improvements. Mark, with all due respect and really sincere appreciation for your and other Tomcat committers' work, not all people who use Tomcat, and who sometimes try to be helpful in this forum, are Java developers, or even software developers in general. And such people also have other things which occupy their time for $ reasons. What I'm saying, is that what for you or other Tomcat committers may be a simple thing of 2 minutes to look up and understand, or which you do not even need to look up because you already know it for being immersed in it all day, is not necessarily so simple for others. In a case like this one for instance, I would not even know where to start, about looking up the particular piece of code involved here. And when I would find it, which may take me a couple of hours, I am not sure that I would even understand that code. This is not out of laziness. It just so happens that 98% of my time is spent on other things than Java and Tomcat, and the remaining 2% I like to keep for reading the spirited correspondence on this list and trying to help on matters where a deep knowledge of Java and Tomcat code is not essential. I apologise thus if you feel that I am wasting your time by making unwarranted suppositions or assumptions. Even when making improper assumptions and suggestions, it is on the base of a desire to help. I can of course stop this at any time, if you feel that my attempted contributions do more harm than good. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
JMX access through firewall
Hi there, I'm trying to attach a Visualvm to a Tomcat (6.0.32) in a remote computer that only has the port 22 opened. I'm opening a ssh tunnel to bypass the firewall and access different ports but JMX over RMI it's not working. I have tried several tutorials but I didn't manage to work. http://blogs.oracle.com/jmxetc/entry/connecting_through_firewall_using_jmx http://www.junlu.com/msg/394744.html I also see that there are some listeners that can help to get this working like org.apache.catalina.mbeans.JmxRemoteLifecycleListener and org.apache.catalina.mbeans.JMXAdaptorLifecycleListener but none of them are available in Tomcat (ClassNotFoundException). After a day trying to find a solution I found this article that seems to be easier but I wasn't able to configure Tomcat to use JMX over JMXMP. How can I do that? http://blog.markfeeney.com/2010/10/jmx-through-ssh-tunnel.html Thanks in advance! Thiago Moreira
Re: [OT?] control of session timed out with tomcat
On 21/10/2011 13:43, André Warnier wrote: Mark Thomas wrote: On 21/10/2011 11:42, André Warnier wrote: Allright, so how about a half-way house to start with ? Keep the list in some thread-safe table, indexed by session-id, and just scan the table. Updating the corresponding session entry at each request should be cheap. Of course in all this, my basic assumption is that currently, Tomcat keeps session information (including the expiration data) in some location which requires an I/O action to access. That assumption is incorrect. Which pretty much invalidates the rest of the points below. Again, I *strongly* encourage you to look at the current implementation before suggesting improvements. Mark, with all due respect and really sincere appreciation for your and other Tomcat committers' work, not all people who use Tomcat, and who sometimes try to be helpful in this forum, are Java developers, or even software developers in general. And such people also have other things which occupy their time for $ reasons. What I'm saying, is that what for you or other Tomcat committers may be a simple thing of 2 minutes to look up and understand, or which you do not even need to look up because you already know it for being immersed in it all day, is not necessarily so simple for others. In a case like this one for instance, I would not even know where to start, about looking up the particular piece of code involved here. And when I would find it, which may take me a couple of hours, I am not sure that I would even understand that code. You might be surprised at simple the code is. http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/session/ManagerBase.java?view=annotate (start at line 515) http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/session/StandardSession.java?view=annotate (start at line 645) For background, the sessions are in a ConcurrentHashMap, keyed by session ID. This is not out of laziness. It just so happens that 98% of my time is spent on other things than Java and Tomcat, and the remaining 2% I like to keep for reading the spirited correspondence on this list and trying to help on matters where a deep knowledge of Java and Tomcat code is not essential. I apologise thus if you feel that I am wasting your time by making unwarranted suppositions or assumptions. Even when making improper assumptions and suggestions, it is on the base of a desire to help. I can of course stop this at any time, if you feel that my attempted contributions do more harm than good. If anyone is going to suggest changes to improve the current implementation then, yes, I think they need to know what the current implementation is before they make those suggestions. It simply isn't possible to state that B is likely to perform better than A without an understanding of what A is. In this case, you pretty much ended up describing exactly how Tomcat currently manages sessions. Was this a waste of my time? If a few more people now have a better understanding of how session management works then no, I don't think it was a waste of my time. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: JMX access through firewall
On 21/10/2011 13:56, Thiago Moreira (timba) wrote: org.apache.catalina.mbeans.JmxRemoteLifecycleListener Read this http://tomcat.apache.org/tomcat-6.0-doc/config/listeners.html org.apache.catalina.mbeans.JMXAdaptorLifecycleListener but none of them are available in Tomcat (ClassNotFoundException). Quoting the above docs: This listener requires catalina-jmx-remote.jar to be placed in $CATALINA_HOME/lib. This jar may be found in the extras directory of the binary download area. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: docBase= and Environment/ in server.xml
From: Gianoglio Gabriele [mailto:g.gianog...@eurogroup.it] Subject: docBase= and Environment/ in server.xml in my Tomcat 5.5 instance I'm trying to set a webapp as the root (docBase=) webapp Right there you have a fatal error; docBase must *never* be an empty string. Please read the FAQ entry for making a webapp the default one: http://wiki.apache.org/tomcat/HowTo#How_do_I_make_my_web_application_be_the_Tomcat_default_application.3F The simple way is to not put the Context in server.xml (almost always a bad idea), and name your webapp ROOT (case sensitive). - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: FarmWarDeployer undeploy on slave node when tomcat restart
Hi Keiichi, many thanks for your suggestion. By setting synchronous replication everything works. Unless processing updated war by one message, I think that async replication shouldn't be used (personal opinion). By the way I wander If asnyc replication couldn't lead to some other unexpected behavior. Many thanks, Marco On Fri, Oct 21, 2011 at 12:10 PM, Keiichi Fujino kfuj...@apache.org wrote: I checked FarmWarDeployer's code. When WAR is updated, FarmWarDeployer sends UndeployMessage and sends FileMessage after that. The node which received UndeployMessage undeploys war. The node which received FileMessage deploys war. If FileMessage is received while processing UndeployMessage, the following error messages will be outputted. SEVERE: Application /example in used. touch war file example.war again! In the case of asynchronous replication (default), FileMessage may be received while processing UndeployMessage. I think that it may be better to process updated war by one message. Although I consider correction of a code, there is one work around. Workaround is change in synchronous mode. Please try the following. Cluster className=org.apache.catalina.ha.tcp.SimpleTcpCluster channelSendOptions=6 2011/10/21 Marco Betti m.be...@gmail.com: Tried also on Tomcat 7.0.22 Same behaviour: when i restart node1, FarmWarDeployer undeploy my war both from node1 and node2, but re-deploy it only on node1. If I touch my war in my watchDir on node1, tomcat redeploys it correctly on both nodes... Is tomcat clustering used? If so, does anybody use FarmWarDeployer ? Many thanks, Marco On Thu, Oct 20, 2011 at 6:21 PM, Marco Betti m.be...@gmail.com wrote: Hi all, I'm new to the list. I'm trying to configure tomcat 6.0.33 clustering. Session replication is ok. I've a problem with FarmWarDeployer. I found that: 1. You have to place the Cluster node under the Host element. Tomcat 6.0.x complains that the element Cluster/Deployer element is not understood at the Engine level. 2. One node needs to have watchEnabled=true, all other nodes watchEnabled=false 3. deployDir is the same as appBase and after I found this post that confirmed these points to me: http://www.mail-archive.com/users@tomcat.apache.org/msg80374.html The problem is the following: let node1 be the master (watchEnabled=true) and node2 the slave (watchEnabled=false) This is my configuration: Deployer className=org.apache.catalina.ha.deploy.FarmWarDeployer tempDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/temp/ deployDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/webapps/ watchDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/farm/ watchEnabled=true/ If I copy a war to watchDir of node1 evertything works fine and cluster deploy is achieved. When i restart node1, FarmWarDeployer undeploy my war both from node1 and node2, but re-deploy it only on node1. node1 log: INFO: Cluster wide remove of web app /example Oct 20, 2011 5:50:46 PM org.apache.catalina.startup.HostConfig checkResources INFO: Undeploying context [/example] Oct 20, 2011 5:50:46 PM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive example.war node2 log: INFO: Undeploying context [/example] Oct 20, 2011 5:50:47 PM org.apache.catalina.ha.deploy.FarmWarDeployer messageReceived SEVERE: Application /example in used. touch war file example.war again! Obviously, if I touch my war in my watchDir on node1, tomcat redeploys it correctly on both nodes... but this cannot be the solution... Is it a known problem? Could anyone help me? Many thanks, Marco -- Keiichi.Fujino - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- Ing. Marco Betti RHCE RHEL4 id 804006512121056
Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp
On 21/10/2011 13:12, Bob DeRemer wrote: Thanks Mark, I appreciate the offer. Let me dig into a bit today - based on your steps. if I can't get anywhere, I'll gladly take you up on your offer. What is the best way to communicate out-of-band if I need to get you a snapshot? Bob and I took at look at this off-list using the standard approach for finding web-app reload memory leaks [1] and found what appears to be an issue with Tomcat's memory leak protection for the http keep-alive thread. Tomcat only clears the WebappClassLoader from the http keep-alive thread if the thread is still running. It should clear it in all circumstances. Ill be updating Tomcat to address this shortly. Mark [1] http://people.apache.org/~markt/presentations/2010-11-04-Memory-Leaks-60mins.pdf -bob -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Friday, October 21, 2011 7:42 AM To: Tomcat Users List Subject: Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp On 21/10/2011 12:22, Bob DeRemer wrote: Hi Mark, With regard to using Tomcat in production, that was meant sarcastically - the team has done a nice job on later Tomcat 6 and Tomcat 7 32/64-bit installations - including Windows Service support, etc. - nice work. That comment was more aimed at the archives than you ;) With regard to using YourKit, I have a licensed copy, but must be missing something - where can I look to see what is holding a reference to the JAR? I've used it for memory analysis and CPU profiling - primarily, but I'm not sure where to look for JAR references. File locks can be tricky to pin down. I usually do something along the lines of: 1. Take a memory snapshot 2. Switch to the object view 3. Search for the name of the JAR 4. Trace the GC roots of a promising looking object Normally, the JAR name appears in a String for a JarFile or File object and that traces back to whatever is holding the reference. I'd be happy to take a look at the snapshot for you if you can put the snapshot somewhere where I can download it. Mark Thanks, Bob -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Friday, October 21, 2011 2:46 AM To: Tomcat Users List Subject: Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp On 21/10/2011 03:00, Bob DeRemer wrote: While I can appreciate the desire to never use Windows, that isn't reality in many of the industries that use our product, so running Tomcat on windows can't be considered an oddity or edge case. If it is, we better look for another app server. If that were the case, the Tomcat devs wouldn't have put the investment they have into the Windows installer in recent months (auto detection of 32 or 64 bit JRE, greater control over ports, multiple service installs of the same version, ...) With regard to finding a solution, I'll try the antiJarLocking setting, but I don't have any problem with any other JARS, so I don't hold out much hope for this fixing my problem. I may look at upgrading to JDK 7 - which has added a close method to the URLClassLoader. Perhaps this might fix it. Maybe. If anyone else has any other ideas why ONLY JARs added via the addURL hack I've shown below don't get unloaded when the WEBAPP is shutdown - vs stopping Tomcat completely, I would greatly appreciate it. You need to understand the root cause. I'd recommend getting a profiler (I use YourKit since they give free copies to Tomcat committers) and finding out exactly what is holding references to those JARs. Once you know that the next questions are 1. What creates those references and 2. How to get rid of them. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [OT] control of session timed out with tomcat
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tim, On 10/20/2011 7:01 PM, Tim Watts wrote: This was a while ago -- no HttpSessionListeners available -- so we couldn't easily persist the session and recall it when the user logged in again. Wow. What were you using, Apache JServ? Tomcat 3.x? I don't see from the API javadocs when HttpSessionBindingListener was introduced (it just says $Version$ in 2.5 and nothing at all in 3.0), but that should have been around for a long time. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk6hikoACgkQ9CaO5/Lv0PAYtgCgtzkREusG5n1oGmTtC1pyMzKS iIYAnRUBhxc8q+qZ0E77m1UQRQIrPANX =P4Wf -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: JAR locked in Tomcat after using addUrl to dynamically add JAR to running webapp
On 21/10/2011 15:31, Mark Thomas wrote: On 21/10/2011 13:12, Bob DeRemer wrote: Thanks Mark, I appreciate the offer. Let me dig into a bit today - based on your steps. if I can't get anywhere, I'll gladly take you up on your offer. What is the best way to communicate out-of-band if I need to get you a snapshot? Bob and I took at look at this off-list using the standard approach for finding web-app reload memory leaks [1] and found what appears to be an issue with Tomcat's memory leak protection for the http keep-alive thread. Tomcat only clears the WebappClassLoader from the http keep-alive thread if the thread is still running. It should clear it in all circumstances. Ill be updating Tomcat to address this shortly. I have updated 7.0.x trunk. If you want to try it out, you'll need to build Tomcat from source. Instructions to do this are here: http://tomcat.apache.org/tomcat-7.0-doc/building.html The short version is: svn co http://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk/ tomcat-7 cd tomcat-7 ant Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: FarmWarDeployer undeploy on slave node when tomcat restart
- Original Message - From: Marco Betti m.be...@gmail.com To: Tomcat Users List users@tomcat.apache.org Cc: Sent: Friday, October 21, 2011 7:18 AM Subject: Re: FarmWarDeployer undeploy on slave node when tomcat restart Hi Keiichi, many thanks for your suggestion. By setting synchronous replication everything works. Unless processing updated war by one message, I think that async replication shouldn't be used (personal opinion). By the way I wander If asnyc replication couldn't lead to some other unexpected behavior. Many thanks, Marco On Fri, Oct 21, 2011 at 12:10 PM, Keiichi Fujino kfuj...@apache.org wrote: I checked FarmWarDeployer's code. When WAR is updated, FarmWarDeployer sends UndeployMessage and sends FileMessage after that. The node which received UndeployMessage undeploys war. The node which received FileMessage deploys war. If FileMessage is received while processing UndeployMessage, the following error messages will be outputted. SEVERE: Application /example in used. touch war file example.war again! In the case of asynchronous replication (default), FileMessage may be received while processing UndeployMessage. I think that it may be better to process updated war by one message. Although I consider correction of a code, there is one work around. Workaround is change in synchronous mode. Please try the following. Cluster className=org.apache.catalina.ha.tcp.SimpleTcpCluster channelSendOptions=6 2011/10/21 Marco Betti m.be...@gmail.com: Tried also on Tomcat 7.0.22 Same behaviour: when i restart node1, FarmWarDeployer undeploy my war both from node1 and node2, but re-deploy it only on node1. If I touch my war in my watchDir on node1, tomcat redeploys it correctly on both nodes... Is tomcat clustering used? If so, does anybody use FarmWarDeployer ? Many thanks, Marco On Thu, Oct 20, 2011 at 6:21 PM, Marco Betti m.be...@gmail.com wrote: Hi all, I'm new to the list. I'm trying to configure tomcat 6.0.33 clustering. Session replication is ok. I've a problem with FarmWarDeployer. I found that: 1. You have to place the Cluster node under the Host element. Tomcat 6.0.x complains that the element Cluster/Deployer element is not understood at the Engine level. 2. One node needs to have watchEnabled=true, all other nodes watchEnabled=false 3. deployDir is the same as appBase and after I found this post that confirmed these points to me: http://www.mail-archive.com/users@tomcat.apache.org/msg80374.html The problem is the following: let node1 be the master (watchEnabled=true) and node2 the slave (watchEnabled=false) This is my configuration: Deployer className=org.apache.catalina.ha.deploy.FarmWarDeployer tempDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/temp/ deployDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/webapps/ watchDir=/appserv/tomcat/tomcat60/apache-tomcat-6.0.33/server/clu001node01/farm/ watchEnabled=true/ If I copy a war to watchDir of node1 evertything works fine and cluster deploy is achieved. When i restart node1, FarmWarDeployer undeploy my war both from node1 and node2, but re-deploy it only on node1. node1 log: INFO: Cluster wide remove of web app /example Oct 20, 2011 5:50:46 PM org.apache.catalina.startup.HostConfig checkResources INFO: Undeploying context [/example] Oct 20, 2011 5:50:46 PM org.apache.catalina.startup.HostConfig deployWAR INFO: Deploying web application archive example.war node2 log: INFO: Undeploying context [/example] Oct 20, 2011 5:50:47 PM org.apache.catalina.ha.deploy.FarmWarDeployer messageReceived SEVERE: Application /example in used. touch war file example.war again! Obviously, if I touch my war in my watchDir on node1, tomcat redeploys it correctly on both nodes... but this cannot be the solution... Is it a known problem? Could anyone help me? Many thanks, Marco I've noticed this as well with FarmWarDeployer. However, I've always used synchronous as the channel option so it's not been a problem. As to the placement of the cluster, yes you have to place it at the Host element in order for FarmWarDeployer to work. That note is buried in the documentation somewhere. Another thing on my to-do list is to write up a basic clustering HOW-TO. Unfortunately right now I have no spare cycles. One of the issues I have with FarmWarDeployer is that upon Tomcat restart the application is undeployed and redeployed cluster-wide. This can have several unintended consequences. 1. Makes the application unavailable cluster-wide (ouch) 2. Slows down restart 3. Could trigger permgen issues for troublesome
RE: Tomcat produces empty/missing log files
o Tried running the .bat file from the command line directly piping output to a local .txt file; all that gets piped to the .txt file is the java environment variables that are being used startup.bat is equivalent to calling catalina.bat start Try using catalina.bat run instead. - This command works, but then output is not seen on the console. I'm trying to achieve normal funcationality, where the console displays all output, but is DUPLICATED in the log file (which should normally be stdout.log or catalina.out) o Modified catalina.bat to pipe %EXECJAVA% . %ACTION% commands to log file (didn't work, nothing in the log file) It would be nice to see the actual command line that starts Tomcat's Bootstrap. The JVM keys that configure java.util.logging should be there. - I don't know what you mean by this. o Followed instructions at http://tomcat.apache.org/tomcat-5.5-doc/logging.html to set up logging Maybe 7.0 docs will be more understandable. - 7.0 docs are not applicable, as I'm dealing with v5.5.33, and cannot upgrade to newer versions of Tomcat because 5.5.33 is the only version supported by the software project I'm working on (as stated in previous message) o Tried log4j; log files didn't contain exception messages Did you restore original configuration after these experiments? Did you remove log4j.jar? - Yes, restored to original configuration. If I remove the log4j-x.x.x.jar file, it will then throw multiple exceptions like java.lang.NoClassDefFoundError: org/apache/log4j/Priority while starting Tomcat o Contents of logging.properties file (located in BOTH /common/classes/ and /conf/ folders): It should be only in conf. - The instructions at http://tomcat.apache.org/tomcat-5.5-doc/logging.html clearly state that the file is to be placed in common/classes. Even so, I removed it from that directory, but get the same result Try to simplify your configuration.: - following your instructions I simplified the logging.properties file to the 1 entry you suggested. This produced some confusing results. The log file now contains MOST of the output; some exceptions found in the log; the console was empty, but one exception was logged in the console and not in the log file. Ideally (and what I think is normal behavior for Tomcat) it should be putting all output to the console, and duplicating all output to the log file. - I then did another experiment, keeping the more verbose logging.properties file, and adding the following: org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 1catalina.org.apache.juli.FileHandler - With this change, I can see all output in the console, and I can see that it's now putting some of the output in two different files, catalina.date.log and localhost.date.log - At this point, I'm just confused as to what and why certain output is being put in one file versus the other - And it's still throwing exceptions about not being able to find log4j - Using the above addition to the more verbose logging.properties file and KEEPING the log4j.jar file in the common/lib folder produces some more confusion - All output is shown in the console, there are no log4j exceptions thrown, but the log files are empty again. Any more ideas? It seems like the modification to the logging.properties file was very close to achieving the goal, if only it didn't keep throwing exceptions about log4j. Thanks again, Brian J. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
SSI SecurityException
Hello folks, I have a new Tomcat install, version 7.0.21 running on OS X 10.6.8 server (not using Apple's install of Tomcat, BTW), and Java 1.6.0. I've successfully setup a SSI Filter before with Tomcat 6.0 a few years ago with the help of this list, but I'm just stuck right now. I've uncommented the SSI Filters as described in: http://tomcat.apache.org/tomcat-7.0-doc/ssi-howto.html and enabled all files to be parsed with * I've made my app privileged with Context antiResourceLocking=false privileged=true based on the Manager app since it's already privileged. The META-INF directory in my app is where the context.xml is stored with this. I'm using the Filters because I'd like it to find ssi directives within .jsp files. When I launch Tomcat I see this in my logs: SEVERE: Exception starting filter ssi java.lang.SecurityException: Restricted class org.apache.catalina.ssi.SSIFilter at org.apache.catalina.core.DefaultInstanceManager.checkAccess(DefaultInstanceManager.java:432) at org.apache.catalina.core.DefaultInstanceManager.checkAccess(DefaultInstanceManager.java:421) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:399) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:252) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:372) at org.apache.catalina.core.ApplicationFilterConfig.init(ApplicationFilterConfig.java:98) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4584) at org.apache.catalina.core.StandardContext$2.call(StandardContext.java:5262) at org.apache.catalina.core.StandardContext$2.call(StandardContext.java:5257) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:680) As as test, I tried using the Servlet instead of the Filter and that worked - at least the ssi include was shown, although Tomcat then didn't process the .jsp which I would expect. I'm sure this is the way I configured it on version 6, but I may have missed something when I made my notes on that install. Any direction would be appreciated. -Steve - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: JMX access through firewall
Thanks Mark! I was able to connect visualvm to Tomcat without SSH tunneling, that is a one step forward! But I'm still struggling with SSH tunneling. Let me show what I have configured. I have a VirtualBox VM (Ubuntu-11.10) setup with a Tomcat (6.0.32) with the following configurations: - setenv.sh JAVA_OPTS=$JAVA_OPTS -Djava.rmi.server.hostname=tmoreira2020-VirtualBox -Dcom.sun.management.jmxremote.password .file=$CATALINA_HOME/conf/jmxremote.password -Dcom.sun.management.jmxremote.access.file=$CATALINA_HOME/conf/jmxr emote.access -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxrem ote.authenticate=false - server.xml Listener className=org.apache.catalina.mbeans.JmxRemoteLifecycleListener rmiRegistryPortPlatform=8849 rmi ServerPortPlatform=8850 useLocalPorts=true / On my host machine I fired the tunneling with: *ssh -v -L10.226.2.212/8849/localhost/8849 -L10.226.2.212/8850/localhost/8850 192.168.56.101* and started a Visualvm trying to connect using the following url connection: *service:jmx:rmi:// 10.226.2.212:8850/jndi/rmi://10.226.2.212:8849/jmxrmi* these configurations seems to be the right ones but it does NOT work. I have tested several others without success either. What I'm missing? Thanks On Fri, Oct 21, 2011 at 11:17 AM, Mark Thomas ma...@apache.org wrote: On 21/10/2011 13:56, Thiago Moreira (timba) wrote: org.apache.catalina.mbeans.JmxRemoteLifecycleListener Read this http://tomcat.apache.org/tomcat-6.0-doc/config/listeners.html org.apache.catalina.mbeans.JMXAdaptorLifecycleListener but none of them are available in Tomcat (ClassNotFoundException). Quoting the above docs: This listener requires catalina-jmx-remote.jar to be placed in $CATALINA_HOME/lib. This jar may be found in the extras directory of the binary download area. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat application startup - Lifecycleexception
Thanks for your guidance. Yes, I have native code and dd hence the .so file. I cannot put that in Java. It is in C++. I did put the LD_LIBRARY_PATH to point to the directory. The error I am getting is ** ERROR mycompany.site.newsp11 - The exception is of type java.io.FileNotFoundException: The requested resource (/mysite/servlet/SPServlet) is not available *** n828cl wrote: From: ramsri [mailto:ramfi...@yahoo.com] Subject: Re: Tomcat application startup - Lifecycleexception I looked into my web.xml under $CATALINA_HOME/webapps/myapp/WEB-INF and there I found a reference to a servlet-name 'Invoker'. I had read about this somewhere. In this day and age, using the Invoker servlet is a hanging offense: http://wiki.apache.org/tomcat/FAQ/Miscellaneous#Q3 There is some other problem with my .so file. What .so file? Are you saying your webapp consists partly of native code? What prevents you from coding that logic in Java? If you actually do need native code, make sure the LD_LIBRARY_PATH environment variable or the Java system property java.library.path points to the location of the .so file so the JVM can find it when resolving references to functions in it. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- View this message in context: http://old.nabble.com/Tomcat-application-startup---Lifecycleexception-tp32693089p32698100.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [OT] control of session timed out with tomcat
On Fri, 2011-10-21 at 11:05 -0400, Christopher Schultz wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tim, On 10/20/2011 7:01 PM, Tim Watts wrote: This was a while ago -- no HttpSessionListeners available -- so we couldn't easily persist the session and recall it when the user logged in again. Wow. What were you using, Apache JServ? Tomcat 3.x? It was 3.x I believe. Yes, I am that old. Eh, you kids today with your new fangled session listeners and what not. Back in the day we just let the user's work vanish into thin air ...and they were GRATEFUL! :-) I don't see from the API javadocs when HttpSessionBindingListener was introduced (it just says $Version$ in 2.5 and nothing at all in 3.0), but that should have been around for a long time. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk6hikoACgkQ9CaO5/Lv0PAYtgCgtzkREusG5n1oGmTtC1pyMzKS iIYAnRUBhxc8q+qZ0E77m1UQRQIrPANX =P4Wf -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat produces empty/missing log files
2011/10/21 Brian Jones bjone...@uwo.ca: It would be nice to see the actual command line that starts Tomcat's Bootstrap. The JVM keys that configure java.util.logging should be there. - I don't know what you mean by this. I mean catalina.bat purpose is to prepare and call java.exe. I'd like to see the real command line that starts java.exe. o Followed instructions at http://tomcat.apache.org/tomcat-5.5-doc/logging.html to set up logging Maybe 7.0 docs will be more understandable. - 7.0 docs are not applicable, as I'm dealing with v5.5.33, and cannot upgrade to newer versions of Tomcat because 5.5.33 is the only version supported by the software project I'm working on (as stated in previous message) Have you tried reading them? I spent good time trying to improve those docs, to better explain what is going on, but wouldn't backport those to 5.5.x - Yes, restored to original configuration. If I remove the log4j-x.x.x.jar file, it will then throw multiple exceptions like java.lang.NoClassDefFoundError: org/apache/log4j/Priority while starting Tomcat ??? What throws it? There should be a stacktrace. Maybe you shall start with a fresh copy of 5.5.33? o Contents of logging.properties file (located in BOTH /common/classes/ and /conf/ folders): It should be only in conf. - The instructions at http://tomcat.apache.org/tomcat-5.5-doc/logging.html clearly state that the file is to be placed in common/classes. Huh. The doc is wrong there. The file in common/classes will take priority over the one in conf, but I'd say that that is an unusual configuration. Even so, I removed it from that directory, but get the same result Try to simplify your configuration.: - following your instructions I simplified the logging.properties file to the 1 entry you suggested. This produced some confusing results. The log file now contains MOST of the output; some exceptions found in the log; the console was empty, but one exception was logged in the console and not in the log file. Which one? Ideally (and what I think is normal behavior for Tomcat) it should be putting all output to the console, and duplicating all output to the log file. In production you wouldn't want that output on console. It is harder to rotate catalina.out. - I then did another experiment, keeping the more verbose logging.properties file, and adding the following: org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 1catalina.org.apache.juli.FileHandler - With this change, I can see all output in the console, and I can see that it's now putting some of the output in two different files, catalina.date.log and localhost.date.log http://www.catb.org/~esr/faqs/smart-questions.html What is those verbose logging.properties and why those lines? You are asking something, but are not providing facts. Do you expect guesses as an answer? Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: SSI SecurityException
2011/10/21 Steve Major st...@themajorshome.com: Hello folks, I have a new Tomcat install, version 7.0.21 running on OS X 10.6.8 server (not using Apple's install of Tomcat, BTW), and Java 1.6.0. I've successfully setup a SSI Filter before with Tomcat 6.0 a few years ago with the help of this list, but I'm just stuck right now. I've uncommented the SSI Filters as described in: http://tomcat.apache.org/tomcat-7.0-doc/ssi-howto.html and enabled all files to be parsed with * Where did you uncomment it? You should not have modified conf/web.xml, because it applies to all webapps. You should copy it into your webapp only. Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat produces empty/missing log files
The verbose file I was referring to was the original content of the logging.properties file that I pasted in the previous message. Brian J. -Original Message- From: Konstantin Kolinko [mailto:knst.koli...@gmail.com] Sent: Friday, October 21, 2011 2:24 PM To: Tomcat Users List Subject: Re: Tomcat produces empty/missing log files 2011/10/21 Brian Jones bjone...@uwo.ca: It would be nice to see the actual command line that starts Tomcat's Bootstrap. The JVM keys that configure java.util.logging should be there. - I don't know what you mean by this. I mean catalina.bat purpose is to prepare and call java.exe. I'd like to see the real command line that starts java.exe. o Followed instructions at http://tomcat.apache.org/tomcat-5.5-doc/logging.html to set up logging Maybe 7.0 docs will be more understandable. - 7.0 docs are not applicable, as I'm dealing with v5.5.33, and cannot upgrade to newer versions of Tomcat because 5.5.33 is the only version supported by the software project I'm working on (as stated in previous message) Have you tried reading them? I spent good time trying to improve those docs, to better explain what is going on, but wouldn't backport those to 5.5.x - Yes, restored to original configuration. If I remove the log4j-x.x.x.jar file, it will then throw multiple exceptions like java.lang.NoClassDefFoundError: org/apache/log4j/Priority while starting Tomcat ??? What throws it? There should be a stacktrace. Maybe you shall start with a fresh copy of 5.5.33? o Contents of logging.properties file (located in BOTH /common/classes/ and /conf/ folders): It should be only in conf. - The instructions at http://tomcat.apache.org/tomcat-5.5-doc/logging.html clearly state that the file is to be placed in common/classes. Huh. The doc is wrong there. The file in common/classes will take priority over the one in conf, but I'd say that that is an unusual configuration. Even so, I removed it from that directory, but get the same result Try to simplify your configuration.: - following your instructions I simplified the logging.properties file to the 1 entry you suggested. This produced some confusing results. The log file now contains MOST of the output; some exceptions found in the log; the console was empty, but one exception was logged in the console and not in the log file. Which one? Ideally (and what I think is normal behavior for Tomcat) it should be putting all output to the console, and duplicating all output to the log file. In production you wouldn't want that output on console. It is harder to rotate catalina.out. - I then did another experiment, keeping the more verbose logging.properties file, and adding the following: org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 1catalina.org.apache.juli.FileHandler - With this change, I can see all output in the console, and I can see that it's now putting some of the output in two different files, catalina.date.log and localhost.date.log http://www.catb.org/~esr/faqs/smart-questions.html What is those verbose logging.properties and why those lines? You are asking something, but are not providing facts. Do you expect guesses as an answer? Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: SSI SecurityException
Hello, thank you for replying! Yes, that is the location I uncommented it since that is what their instructions say. I'm only deploying a single webapp, so I do not mind it being global. I do see how it would be tidier in the future, if I deploy more, to do it on a per-app basis. If this is contributing to my current problem, I have no issues doing as you suggest. Should I copy it from the conf directory in its entirety or just a subsection of the file? Thank you again. -Steve On Oct 21, 2011, at 2:27 PM, Konstantin Kolinko wrote: 2011/10/21 Steve Major st...@themajorshome.com: Hello folks, I have a new Tomcat install, version 7.0.21 running on OS X 10.6.8 server (not using Apple's install of Tomcat, BTW), and Java 1.6.0. I've successfully setup a SSI Filter before with Tomcat 6.0 a few years ago with the help of this list, but I'm just stuck right now. I've uncommented the SSI Filters as described in: http://tomcat.apache.org/tomcat-7.0-doc/ssi-howto.html and enabled all files to be parsed with * Where did you uncomment it? You should not have modified conf/web.xml, because it applies to all webapps. You should copy it into your webapp only. Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat produces empty/missing log files
Please find below the context of logging.properties (updated, the 'verbose'
copy, rather than the minimalized copy you had suggested previously):
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the License); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an AS IS BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
handlers = 1catalina.org.apache.juli.FileHandler,
2localhost.org.apache.juli.FileHandler,
3manager.org.apache.juli.FileHandler, 4admin.org.apache.juli.FileHandler,
5host-manager.org.apache.juli.FileHandler, java.util.logging.ConsoleHandler
.handlers = 1catalina.org.apache.juli.FileHandler,
java.util.logging.ConsoleHandler
# Handler specific properties.
# Describes specific configuration info for Handlers.
1catalina.org.apache.juli.FileHandler.level = FINE
1catalina.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
1catalina.org.apache.juli.FileHandler.prefix = catalina.
2localhost.org.apache.juli.FileHandler.level = FINE
2localhost.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
2localhost.org.apache.juli.FileHandler.prefix = localhost.
3manager.org.apache.juli.FileHandler.level = FINE
3manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
3manager.org.apache.juli.FileHandler.prefix = manager.
4admin.org.apache.juli.FileHandler.level = FINE
4admin.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
4admin.org.apache.juli.FileHandler.prefix = admin.
5host-manager.org.apache.juli.FileHandler.level = FINE
5host-manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs
5host-manager.org.apache.juli.FileHandler.prefix = host-manager.
java.util.logging.ConsoleHandler.level = FINE
java.util.logging.ConsoleHandler.formatter =
java.util.logging.SimpleFormatter
# Facility specific properties.
# Provides extra control for each logger.
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers =
1catalina.org.apache.juli.FileHandler
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers =
2localhost.org.apache.juli.FileHandler
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].lev
el = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].han
dlers = 3manager.org.apache.juli.FileHandler
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/admin].level
= INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/admin].handl
ers = 4admin.org.apache.juli.FileHandler
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager
].level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager
].handlers = 5host-manager.org.apache.juli.FileHandler
# For example, set the com.xyz.foo logger to only log SEVERE
# messages:
#org.apache.catalina.startup.ContextConfig.level = FINE
#org.apache.catalina.startup.HostConfig.level = FINE
#org.apache.catalina.session.ManagerBase.level = FINE
-
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Re: SSI SecurityException
2011/10/21 Steve Major st...@themajorshome.com: Hello, thank you for replying! Yes, that is the location I uncommented it since that is what their instructions say. I'm only deploying a single webapp, so I do not mind it being global. So every webapp will load that filter and thus every webapp has to be privileged Should I copy it from the conf directory in its entirety or just a subsection of the file? Only definition of the filter and its mapping. Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat produces empty/missing log files
Thanks again for your insight into the problem. Following your advice, I started from a fresh install of Tomcat 5.5.33. I noticed that log4j.1.2.16.jar is included in the common/lib folder by default. The only modification I made was the small addition to logging.properties: org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 1catalina.org.apache.juli.FileHandler I experienced the same results: - on first run, everything is fine but logs are empty. - second run I removed the log4j jar file - Tomcat now produces the output in the log files, but now complains several times about ClassDefNotFound for log4j Cheers, Brian J. -Original Message- From: Konstantin Kolinko [mailto:knst.koli...@gmail.com] Sent: Friday, October 21, 2011 2:24 PM To: Tomcat Users List Subject: Re: Tomcat produces empty/missing log files 2011/10/21 Brian Jones bjone...@uwo.ca: It would be nice to see the actual command line that starts Tomcat's Bootstrap. The JVM keys that configure java.util.logging should be there. - I don't know what you mean by this. I mean catalina.bat purpose is to prepare and call java.exe. I'd like to see the real command line that starts java.exe. o Followed instructions at http://tomcat.apache.org/tomcat-5.5-doc/logging.html to set up logging Maybe 7.0 docs will be more understandable. - 7.0 docs are not applicable, as I'm dealing with v5.5.33, and cannot upgrade to newer versions of Tomcat because 5.5.33 is the only version supported by the software project I'm working on (as stated in previous message) Have you tried reading them? I spent good time trying to improve those docs, to better explain what is going on, but wouldn't backport those to 5.5.x - Yes, restored to original configuration. If I remove the log4j-x.x.x.jar file, it will then throw multiple exceptions like java.lang.NoClassDefFoundError: org/apache/log4j/Priority while starting Tomcat ??? What throws it? There should be a stacktrace. Maybe you shall start with a fresh copy of 5.5.33? o Contents of logging.properties file (located in BOTH /common/classes/ and /conf/ folders): It should be only in conf. - The instructions at http://tomcat.apache.org/tomcat-5.5-doc/logging.html clearly state that the file is to be placed in common/classes. Huh. The doc is wrong there. The file in common/classes will take priority over the one in conf, but I'd say that that is an unusual configuration. Even so, I removed it from that directory, but get the same result Try to simplify your configuration.: - following your instructions I simplified the logging.properties file to the 1 entry you suggested. This produced some confusing results. The log file now contains MOST of the output; some exceptions found in the log; the console was empty, but one exception was logged in the console and not in the log file. Which one? Ideally (and what I think is normal behavior for Tomcat) it should be putting all output to the console, and duplicating all output to the log file. In production you wouldn't want that output on console. It is harder to rotate catalina.out. - I then did another experiment, keeping the more verbose logging.properties file, and adding the following: org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = 1catalina.org.apache.juli.FileHandler - With this change, I can see all output in the console, and I can see that it's now putting some of the output in two different files, catalina.date.log and localhost.date.log http://www.catb.org/~esr/faqs/smart-questions.html What is those verbose logging.properties and why those lines? You are asking something, but are not providing facts. Do you expect guesses as an answer? Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat produces empty/missing log files
On 21/10/2011 20:18, Brian Jones wrote: Thanks again for your insight into the problem. Following your advice, I started from a fresh install of Tomcat 5.5.33. I noticed that log4j.1.2.16.jar is included in the common/lib folder by default. No it isn't. Where are you getting this Tomcat distribution from? Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat produces empty/missing log files
My mistake. The distro doesn't include the .jar by default. The project I deploy to Tomcat automatically sticks the log4j.jar file there. Sorry for the confusion; I overlooked this step. Brian J -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Friday, October 21, 2011 3:23 PM To: Tomcat Users List Subject: Re: Tomcat produces empty/missing log files On 21/10/2011 20:18, Brian Jones wrote: Thanks again for your insight into the problem. Following your advice, I started from a fresh install of Tomcat 5.5.33. I noticed that log4j.1.2.16.jar is included in the common/lib folder by default. No it isn't. Where are you getting this Tomcat distribution from? Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat produces empty/missing log files
On 21/10/2011 20:27, Brian Jones wrote: My mistake. The distro doesn't include the .jar by default. The project I deploy to Tomcat automatically sticks the log4j.jar file there. Sorry for the confusion; I overlooked this step. That begs the question What else is it doing? since it appears to be breaking the Tomcat logging configuration. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: SSI SecurityException
Thanks, I figured that out shortly before getting your reply. Moving the filter and mapping into the app's web.xml has eliminated the error from the logs, however, the ssi still won't display a result. By this I mean if I insert: Today is !--#echo var=DATE_LOCAL -- into my .jsp, when I view the page I only see Today is. My previous experience with Apache's SSI suggests if it wasn't enabled correctly, I'd see Today is !--#echo var=DATE_LOCAL -- on my page because it just would assume that directive is text. Assuming Tomcat follows the same, it would tell me that it is parsing it and for whatever reason not outputting a result. I could be wrong. Thank you again for your time. -Steve On Oct 21, 2011, at 3:01 PM, Konstantin Kolinko wrote: Should I copy it from the conf directory in its entirety or just a subsection of the file? Only definition of the filter and its mapping. Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat produces empty/missing log files
Yes, it appears that the project I'm deploying is relying on log4j for logging; so when I remove the log4j.jar file, it obviously complains that it can't find it. However, what I don't understand is why Tomcat refuses to log to the log files if there is a log4j.jar file present in the common/lib folder. Shouldn't it be looking for the log4j.properties file to determine if it uses log4j or commons? I verified that there is indeed no such log4j.properties file, and the logging.properties file is in the correct location. The project I'm (attempting) to work on is a well known open source enterprise LMS system. It is a very large system, comprised of 100+ sub projects within the project itself. Building and dependencies are handled by Maven. Not sure if that info helps with anything. Thanks again, Brian J. -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Friday, October 21, 2011 3:31 PM To: Tomcat Users List Subject: Re: Tomcat produces empty/missing log files On 21/10/2011 20:27, Brian Jones wrote: My mistake. The distro doesn't include the .jar by default. The project I deploy to Tomcat automatically sticks the log4j.jar file there. Sorry for the confusion; I overlooked this step. That begs the question What else is it doing? since it appears to be breaking the Tomcat logging configuration. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat produces empty/missing log files
2011/10/21 Brian Jones bjone...@uwo.ca: Yes, it appears that the project I'm deploying is relying on log4j for logging; so when I remove the log4j.jar file, it obviously complains that it can't find it. However, what I don't understand is why Tomcat refuses to log to the log files if there is a log4j.jar file present in the common/lib folder. Shouldn't it be looking for the log4j.properties file to determine if it uses log4j or commons? That commons is a wrapper that autoselects either java.util.logging or log4j See http://commons.apache.org/logging/ logging.properties is configuration file for java.util.logging. Dropping in log4j*.jar is enough to confuse the wrapper so that effectively logging.properties is not used at all. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat produces empty/missing log files
Konstantine and Mark, Thanks to both of you for your revelations; without you two I would truly be lost. That defiantly makes sense. Are there any known workarounds for using java.util.logging instead of log4j even if the log4j.jar file is present? Thanks again for allowing me to pick your brain. Brian J -Original Message- From: Konstantin Kolinko [mailto:knst.koli...@gmail.com] Sent: Friday, October 21, 2011 3:40 PM To: Tomcat Users List Subject: Re: Tomcat produces empty/missing log files 2011/10/21 Brian Jones bjone...@uwo.ca: Yes, it appears that the project I'm deploying is relying on log4j for logging; so when I remove the log4j.jar file, it obviously complains that it can't find it. However, what I don't understand is why Tomcat refuses to log to the log files if there is a log4j.jar file present in the common/lib folder. Shouldn't it be looking for the log4j.properties file to determine if it uses log4j or commons? That commons is a wrapper that autoselects either java.util.logging or log4j See http://commons.apache.org/logging/ logging.properties is configuration file for java.util.logging. Dropping in log4j*.jar is enough to confuse the wrapper so that effectively logging.properties is not used at all. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Setting-up Tomcat in Eclipse
Version: Apache Tomcat-6.0-33 Operating System: Windows XP Eclipse J2EE: Version: 3.5.2 I am using Eclipse Galileo to develop web applications. I attempted to integrate Apache Tomcat as an internal (local) server to develop, debug, test, and deploy my application code but I think I am having configuration problems. There may be several problems contributing to this. If anyone is aware of documentation that explains this process then that would be helpful. To set this up I used an IBM tutorial at the following link: http://www.ibm.com/developerworks/opensource/library/os-eclipse-facebook/index.html Thank you in advance for your time. Best, Christopher This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.
RE: Tomcat produces empty/missing log files
From: Brian Jones [mailto:bjone...@uwo.ca] Subject: RE: Tomcat produces empty/missing log files Are there any known workarounds for using java.util.logging instead of log4j even if the log4j.jar file is present? If you only want log4j for a specific webapp rather than for Tomcat itself, put log4j.jar in WEB-INF/lib of the webapp, and the properties file in WEB-INF/classes. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat produces empty/missing log files
Charles, Thanks for your reply. I'm not able to do as you suggested, because the software project is not managed by me, or my parent company. It is an open source enterprise system that is managed by a community and a foundation. Also, it isn't just one project. The system I'm deploying is comprised of 100+ sub projects, that are all independent web apps which all interact together. Your suggestion would require me to go into 100+ projects to make those changes. Even if I wanted to make those changes, then I would be working on a separate branch of the source, and would thusly isolate my development from the community's. Regards, Brian J -Original Message- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: Friday, October 21, 2011 3:47 PM To: Tomcat Users List Subject: RE: Tomcat produces empty/missing log files From: Brian Jones [mailto:bjone...@uwo.ca] Subject: RE: Tomcat produces empty/missing log files Are there any known workarounds for using java.util.logging instead of log4j even if the log4j.jar file is present? If you only want log4j for a specific webapp rather than for Tomcat itself, put log4j.jar in WEB-INF/lib of the webapp, and the properties file in WEB-INF/classes. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat produces empty/missing log files
On 10/21/2011 3:53 PM, Brian Jones wrote: Charles, Thanks for your reply. I'm not able to do as you suggested, because the software project is not managed by me, or my parent company. It is an open source enterprise system that is managed by a community and a foundation. Also, it isn't just one project. The system I'm deploying is comprised of 100+ sub projects, that are all independent web apps which all interact together. Your suggestion would require me to go into 100+ projects to make those changes. Even if I wanted to make those changes, then I would be working on a separate branch of the source, and would thusly isolate my development from the community's. I doubt that, because you're not modifying any source code, just moving libraries around. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat produces empty/missing log files
Yes, but the dependencies are not managed locally, it's done using a remote maven repository. Thus, it would affect the entire community. No? Brian J. -Original Message- From: David kerber [mailto:dcker...@verizon.net] Sent: Friday, October 21, 2011 4:26 PM To: Tomcat Users List Subject: Re: Tomcat produces empty/missing log files On 10/21/2011 3:53 PM, Brian Jones wrote: Charles, Thanks for your reply. I'm not able to do as you suggested, because the software project is not managed by me, or my parent company. It is an open source enterprise system that is managed by a community and a foundation. Also, it isn't just one project. The system I'm deploying is comprised of 100+ sub projects, that are all independent web apps which all interact together. Your suggestion would require me to go into 100+ projects to make those changes. Even if I wanted to make those changes, then I would be working on a separate branch of the source, and would thusly isolate my development from the community's. I doubt that, because you're not modifying any source code, just moving libraries around. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat produces empty/missing log files
2011/10/21 Brian Jones bjone...@uwo.ca: That defiantly makes sense. Are there any known workarounds for using java.util.logging instead of log4j even if the log4j.jar file is present? You will need to read Commons Logging documentation for that. http://wiki.apache.org/commons/How_to_Configure_the_Logging_Factory_and_the_Logging_Class http://commons.apache.org/logging/apidocs/org/apache/commons/logging/package-summary.html#package_description Apparently you will need to set up the following system property before starting Tomcat (e.g. in a bin/setenv.bat file): org.apache.commons.logging.Log=org.apache.commons.logging.impl.Jdk14Logger - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat produces empty/missing log files
Brian, If you can't put Log4j into WEB-INF/lib, could you try putting it into shared/lib? I believe you mentioned that it was placed into common/lib, which will make it accessible to Tomcat all of your webapps. If you put it into shared/lib it should only be accessible to your webapps, which should hide it from Tomcat. Dan On Fri, 2011-10-21 at 12:53 -0700, Brian Jones wrote: Charles, Thanks for your reply. I'm not able to do as you suggested, because the software project is not managed by me, or my parent company. It is an open source enterprise system that is managed by a community and a foundation. Also, it isn't just one project. The system I'm deploying is comprised of 100+ sub projects, that are all independent web apps which all interact together. Your suggestion would require me to go into 100+ projects to make those changes. Even if I wanted to make those changes, then I would be working on a separate branch of the source, and would thusly isolate my development from the community's. Regards, Brian J -Original Message- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: Friday, October 21, 2011 3:47 PM To: Tomcat Users List Subject: RE: Tomcat produces empty/missing log files From: Brian Jones [mailto:bjone...@uwo.ca] Subject: RE: Tomcat produces empty/missing log files Are there any known workarounds for using java.util.logging instead of log4j even if the log4j.jar file is present? If you only want log4j for a specific webapp rather than for Tomcat itself, put log4j.jar in WEB-INF/lib of the webapp, and the properties file in WEB-INF/classes. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [OT] control of session timed out with tomcat
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Tim, On 10/21/2011 2:10 PM, Tim Watts wrote: On Fri, 2011-10-21 at 11:05 -0400, Christopher Schultz wrote: On 10/20/2011 7:01 PM, Tim Watts wrote: This was a while ago -- no HttpSessionListeners available -- so we couldn't easily persist the session and recall it when the user logged in again. Wow. What were you using, Apache JServ? Tomcat 3.x? It was 3.x I believe. Yes, I am that old. Eh, you kids today with your new fangled session listeners and what not. Back in the day we just let the user's work vanish into thin air ...and they were GRATEFUL! :-) I was there for the 2.2-2.3 switch as well. I remember being handed a server runbook that included Apache JServ, and configuring everything was a tedious nightmare. I understand why some people post to the list saying my configuration doesn't work and you find they're using a TC 4.x server.xml file with TC 7.x: that's what the runbook says, so they do it. I distinctly remember personally upgrading our own standard library code to move from the whole getValue/setValue to getAttribute/setAttribute. My employer, for whatever reason, had also implemented their own session management strategy and wired it into their own app framework (I use that term *very* loosely). I re-factored it to use standard HttpSessions under the hood and then got to delete /lots/ of (IMO) completely useless code. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk6h3YoACgkQ9CaO5/Lv0PDkuwCfeBlt55GCpcsGRBm10gX8rnWf 49UAnR96Q+Vdzpc4k5EpC5srpJuAJWCY =HM2M -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: JMX access through firewall
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Thiago, On 10/21/2011 1:37 PM, Thiago Moreira (timba) wrote: On my host machine I fired the tunneling with: ssh -v -L10.226.2.212/8849/localhost/8849 -L10.226.2.212/8850/localhost/8850 192.168.56.101 Is it possible that ssh is confused by your use of IPv6-style forwarding syntax while using IPv4 addresses? Also, -L expects a space between it and the forwarding specifier. How about this: ssh -L 10.226.2.212:8850:localhost:8850 \ -L 10.226.2.212:8850:localhost:8850 - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk6h31QACgkQ9CaO5/Lv0PDNjQCeMLN901blBs4zDVUeZoCGQLVh wlQAoJBV9nTl2fqRy5Bgv0YK57/Pa7m6 =bAqT -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [OT?] control of session timed out with tomcat
Mark Thomas wrote:
...
Of course in all this, my basic assumption is that currently, Tomcat
keeps session information (including the expiration data) in some
location which requires an I/O action to access.
That assumption is incorrect. Which pretty much invalidates the rest of
the points below.
Again, I *strongly* encourage you to look at the current implementation
before suggesting improvements.
...
In a case like this one for instance, I would not even know where to
start, about looking up the particular piece of code involved here. And
when I would find it, which may take me a couple of hours, I am not sure
that I would even understand that code.
You might be surprised at simple the code is.
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/session/ManagerBase.java?view=annotate
(start at line 515)
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/session/StandardSession.java?view=annotate
(start at line 645)
Right, that's what I'm saying :
I didn't know the above, and maybe 1% of the people on this list would know
that.
I would probably have started with
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/
then, among the 40-odd items mentioned there, I might have spotted the one named session
(a clue, that), and clicked on it.
Then I would be at
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/session/
and have a choice of only 10 Java items, out of which I would not know for sure where I
would find the right one.
Even if by selective luck I had clicked on the one named ManagerBase.java, it would
still have taken me quite a while to locate the interesting section at line 515.
But then, the code which I find there is still quite a puzzle for me, considering that you
say below that the sessions are in a ConcurrentHashMap.
All I see there is an array, and a loop through that array.
I also don't understand what is actually done there, except apparently counting the
invalid sessions in expireHere (but apparently only for the benefit of logging it when in
debug mode).
So let's go to the other pointer you provide above (StandardSession, line 645).
There I see :
public boolean isValid() {
646
647 if (this.expiring) {
648 return true;
649 }
650
651 if (!this.isValid) {
652 return false;
653 }
etc..
which, for my very basic knowledge of Java, is already quite confusing.
At line 651, is this a recursive call to the same method, or something else ?
..
But this is still not telling me what session really is; the code does some calculations
based on the time and the expiration timeout, but this code does not actually seem to do
anything to the session thing, whatever it may be. It just returns a boolean value.
..
Ah, but I've aso seen a call to findSessions() somewhere, so let's look for
that.
It is back in ManagerBase, line 703.
703 public Session[] findSessions() {
704
705 return sessions.values().toArray(new Session[0]);
706
707 }
Well at least I guess that this explains the sessions array above, kind of (except that I
do not understand the new Session[0] argument).
I ain't seen a ConcurrentHashMap yet, nor any indication so far as to where the session
information is really kept. So far it /could/ be on disk, or just as well on a set of
scrolls attached to pigeon legs. (*)
I am jesting a bit, but my point is still : for someone fluent in Java and Tomcat code,
this may be a breeze. But I am ready to bet that for 95% of the people coming to this
list for information, it is everything but.
And after all, that's exactly why there are thousands of users of this list, and only a
handful of Tomcat code committers.
And that's fine, and I am very happy to have some of these committers on this list, to
explain in plain English how it really works, and rebutt the silly suggestions which I
make out of ignorance.
But telling the average bloke here, that he should go and browse the code, before he makes
a silly suggestion out of the goodness of his heart, may be a bit disingenuous, no ?
This is the Tomcat users' list, not the dev's one.
For background, the sessions are in a ConcurrentHashMap, keyed by
session ID.
So far thus, I am very happy to take your word for it, because I could not find this in
the indicated code. (*)
...
If anyone is going to suggest changes to improve the current
implementation then, yes, I think they need to know what the current
implementation is before they make those suggestions. It simply isn't
possible to state that B is likely to perform better than A without an
understanding of what A is.
I stand chastised.
In my imagination, a session is something which could potentially contain a lot of data
(what the application developer chooses to save in it, right ?), and could also need to be
stored persistently across Tomcat restarts. Consequently (but wrongly) I assumed that at
least the bulk of it
Re: Tomcat application startup - Lifecycleexception
On 21/10/2011 00:26, ramsri wrote: I now know that there is no longer a need to mess around with setclasspath.sh. I'm not sure there ever was. p signature.asc Description: OpenPGP digital signature
tomcat error 404
Folks, I know I have asked about this site befor with a number of problems and one of the suggestions was to find the original programmer for help. Well I cannot find him ... he is not available unfortunately. I was originally getting some except errors but now, after my host turned off my server because I was three days late in paying an invoice, I am receiving a HTTP Status 404 error. I have verified that tomcat and apache are running. My host will now help ( pissed about that ) so I am hoping someone can help be fix this. I am NOT a tomcat person and I do not actually think this app is set up in what I understand to be a normal way. If anyone can help me I really would appreciate it as the site is down completely at this point. Server CentOS Tomcat 5.5.33 Apache 2.2.19 thank you in advance Dave - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: tomcat error 404
From: Dave Filchak [mailto:sub...@zuka.net] Subject: tomcat error 404 I am receiving a HTTP Status 404 error. Can you tell if the 404 is coming from Tomcat or httpd? I have verified that tomcat and apache are running. By apache [sic], I presume you mean httpd. How did you verify they're running? My host will now help So if the host will help, why aren't you asking them? (Or did you really mean not there?) If anyone can help me I really would appreciate it as the site is down completely at this point. Without considerably more information, there's not much anyone can help you with. For starters, you need to examine the logs, post your server.xml file (obfuscated as needed), show us the Context element (if there is one) for your webapp, tell us the mechanism you're using to connect httpd to Tomcat, and provide the config for that. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
