RE: Shared web.xml
-Original Message- From: QM [mailto:[EMAIL PROTECTED] Sent: Thursday, June 02, 2005 4:29 PM To: Tomcat Users List Subject: Re: Shared web.xml On Thu, Jun 02, 2005 at 02:01:15PM -0500, Trice, Jim wrote: :I inherited a tomcat installation with two tomcat servers running RedHat : Enterprise 3 and tomcat 4.1. They are being load balanced behind a netscaler. : The webapps directory and thus the web.xml files for each context are shared : via NFS. This will hurt. What's the point of load-balancing the two Tomcat instances (eliminating a single point of failure), if they are susceptible to a problem with the NFS server (introducing a single point of failure)? The point of load balancing in this case is to improve response under heavy load. Using nfs need not introduce a single point of failure. In this case the solution to the single point of failure would more likely be setting up a clustered nfs service. I realize it's more of a headache to manage two installs than one; but it's even more painful to manage nothing when the shared storage goes south. =) Read on: : The problem I have is that any time the web.xml is updated for a : context that context is reloaded. Since the web.xml file is shared that means : both servers reload the context at the same time. That means downtime. I know : I can set up a local copy of web.xml and create a link to that but this makes : things more complicated. Is there any way to force tomcat 4 to wait to reload : the class until a reload is requested? I have tried reloadable=false for : each context. Setting reloadable=false (inside the Context/ attribute of server.xml, or inside context.xml) and restarting Tomcat should have done it. You mention you inherited this setup. Perhaps the old admins had setup a watchdog job, and that's what triggers restarts? I tested a default install of the tomcat 4.1 and it exhibited the same behavior using the examples context set to reloadable=false. -QM -- software -- http://www.brandxdev.net/ tech news -- http://www.RoarNetworX.com/ code scan -- http://www.JxRef.org/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Shared web.xml
All, I inherited a tomcat installation with two tomcat servers running RedHat Enterprise 3 and tomcat 4.1. They are being load balanced behind a netscaler. The webapps directory and thus the web.xml files for each context are shared via NFS. The problem I have is that any time the web.xml is updated for a context that context is reloaded. Since the web.xml file is shared that means both servers reload the context at the same time. That means downtime. I know I can set up a local copy of web.xml and create a link to that but this makes things more complicated. Is there any way to force tomcat 4 to wait to reload the class until a reload is requested? I have tried reloadable=false for each context. Thanks, Jim T. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Running Tomcat on multiple processors on Windows 2003
Chris, When running top you can toggle displaying individual threads by hitting H. Also, you can see threads using ps with the -m switch. Jim T. -Original Message- From: Chris Hyzer [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 19, 2005 11:40 AM To: tomcat-user@jakarta.apache.org Subject: Re: Running Tomcat on multiple processors on Windows 2003 Huh? The Sun 1.3, 1.4, and 5.0 JVMs use all 32 of the CPUs on our systems quite nicely. What may be going on is that some administrator has set Windows' CPU affinity to restrict all threads of a given process to a single CPU. - Chuck We have a recent and up2date Linux Redhat installation, and the sun Java hotspot 1.4.2 in server mode JVM. When I run top I see Java as one process, and with one Tomcat running in a performance test, it only hits 50% CPU (of a 2 CPU box). When I run 2 tomcats, I see two processes, and it hits 100% CPU. If anyone has seen this behavior, and then changed some settings to get Tomcat or Java to use multiple CPUs for one instance, I would be curious. Maybe it is something with the threading model or something. I thought Java used native threads by default, or at least green threads on top of native threads (one-to-one), so Im not sure how this fits in... Thanks, Chris - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help !!! Tomcat 5.5.7 - cannot start
Look in $CATALINA_BASE/catalina.out for the startup error. The script redirects STDOUT and STDERR on startup but not shutdown. JT -Original Message- From: Parveen Pasha [mailto:[EMAIL PROTECTED] Sent: Friday, April 08, 2005 1:48 PM To: Tomcat Users List; Robert Harrison Subject: Re: Help !!! Tomcat 5.5.7 - cannot start I am installing all this for the first time. Where do you set the classpath, to include the catalina.jar? How do I know if tomcat is running? ps -ef | grep tomcat yields the same result. Do not see any pid the output is a set of paths that has tomcat in it. $JAVA_HOME and $CATLINA_HOME are set correctly. I may have said it wrong that it is during startup I get the error. It is actually during execution of shutdown.sh. Sorry about that. When I do: su - tomcat -c /usr/local/tomcat/jakarta-tomcat-5.5.7/bin/startup.sh I get: Using CATALINA_BASE: /usr/local/tomcat/jakarta-tomcat-5.5.7 Using CATALINA_HOME: /usr/local/tomcat/jakarta-tomcat-5.5.7 Using CATALINA_TMPDIR: /usr/local/tomcat/jakarta-tomcat-5.5.7/temp Using JRE_HOME: /usr/java/jdk1.5.0_02 [EMAIL PROTECTED] ~]# su - tomcat -c /usr/local/tomcat/jakarta-tomcat-5.5.7/bin/shutdown.sh I get: Using CATALINA_BASE: /usr/local/tomcat/jakarta-tomcat-5.5.7 Using CATALINA_HOME: /usr/local/tomcat/jakarta-tomcat-5.5.7 Using CATALINA_TMPDIR: /usr/local/tomcat/jakarta-tomcat-5.5.7/temp Using JRE_HOME: /usr/java/jdk1.5.0_02 java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:198) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:386) --- Robert Harrison [EMAIL PROTECTED] wrote: Does echo $JAVA_HOME show it set correctly? Bob On Apr 8, 2005 1:28 PM, Anoop kumar V [EMAIL PROTECTED] wrote: Just make sure you have included catalina.jar file in the classpath. -Anoop On Apr 8, 2005 1:23 PM, Parveen Pasha [EMAIL PROTECTED] wrote: Using Tomcat 5.5 + Fedora Core 3 + jdk1.5.02 Changed the port to 8090 from the default 8080 port in server.xml. Did not install the runtime environment. only installed jdk1.5.02 using the rpm -iv jdk-1_5_0_02-linux-i586-rpm When I execute the startup.sh script, I receive the following error in Catalina.out java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:198) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:386) Cannot view the default web applications included with Tomcat when accessing via http://localhost:8090 I receive the following message: The page cannot be displayed. I did not find any solution on the Web. Can someone help. Thanks! Thanks! Parveen - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Thanks and best regards, Anoop - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help !!! Tomcat 5.5.7 - cannot start
Sorry I meant $CATALINA_BASE/logs/catalina.out. -Original Message- From: Trice, Jim [mailto:[EMAIL PROTECTED] Sent: Friday, April 08, 2005 2:46 PM To: Tomcat Users List Subject: RE: Help !!! Tomcat 5.5.7 - cannot start Look in $CATALINA_BASE/catalina.out for the startup error. The script redirects STDOUT and STDERR on startup but not shutdown. JT -Original Message- From: Parveen Pasha [mailto:[EMAIL PROTECTED] Sent: Friday, April 08, 2005 1:48 PM To: Tomcat Users List; Robert Harrison Subject: Re: Help !!! Tomcat 5.5.7 - cannot start I am installing all this for the first time. Where do you set the classpath, to include the catalina.jar? How do I know if tomcat is running? ps -ef | grep tomcat yields the same result. Do not see any pid the output is a set of paths that has tomcat in it. $JAVA_HOME and $CATLINA_HOME are set correctly. I may have said it wrong that it is during startup I get the error. It is actually during execution of shutdown.sh. Sorry about that. When I do: su - tomcat -c /usr/local/tomcat/jakarta-tomcat-5.5.7/bin/startup.sh I get: Using CATALINA_BASE: /usr/local/tomcat/jakarta-tomcat-5.5.7 Using CATALINA_HOME: /usr/local/tomcat/jakarta-tomcat-5.5.7 Using CATALINA_TMPDIR: /usr/local/tomcat/jakarta-tomcat-5.5.7/temp Using JRE_HOME: /usr/java/jdk1.5.0_02 [EMAIL PROTECTED] ~]# su - tomcat -c /usr/local/tomcat/jakarta-tomcat-5.5.7/bin/shutdown.sh I get: Using CATALINA_BASE: /usr/local/tomcat/jakarta-tomcat-5.5.7 Using CATALINA_HOME: /usr/local/tomcat/jakarta-tomcat-5.5.7 Using CATALINA_TMPDIR: /usr/local/tomcat/jakarta-tomcat-5.5.7/temp Using JRE_HOME: /usr/java/jdk1.5.0_02 java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:198) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:386) --- Robert Harrison [EMAIL PROTECTED] wrote: Does echo $JAVA_HOME show it set correctly? Bob On Apr 8, 2005 1:28 PM, Anoop kumar V [EMAIL PROTECTED] wrote: Just make sure you have included catalina.jar file in the classpath. -Anoop On Apr 8, 2005 1:23 PM, Parveen Pasha [EMAIL PROTECTED] wrote: Using Tomcat 5.5 + Fedora Core 3 + jdk1.5.02 Changed the port to 8090 from the default 8080 port in server.xml. Did not install the runtime environment. only installed jdk1.5.02 using the rpm -iv jdk-1_5_0_02-linux-i586-rpm When I execute the startup.sh script, I receive the following error in Catalina.out java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:198) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:386) Cannot view the default web applications included with Tomcat when accessing via http://localhost:8090 I receive the following message: The page cannot be displayed. I did not find any solution on the Web. Can someone help. Thanks! Thanks! Parveen - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Thanks and best regards, Anoop - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat Hang on Linux (hangs the entire system)
Hi, One thing I have found helpful in the past is to looks at sar statistics leading up to a system lockup. If it doesn't occur too quickly you might catch something building up on the system. You must have the sysstat package installed. See man sar. I check things like process creation, memory, swapping, etc. Jim T. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, March 31, 2005 1:44 AM To: Tomcat Users List Subject: Re: Tomcat Hang on Linux (hangs the entire system) Hi, You can try the following step by step approach 1) Check whether you are able to run the examples application in tomcat. If you are not able to run that there's a problem with tomcat configuration or the JVM. 2) If that runs smoothly without any problems, check your application and ensure that it doesn't go into any infinite loops etc, since that's one runaway thing that can bring down the whole machine consuming lot of cpu and perhaps even memory leaving no room for anything else. 3) If your application is OK, make sure no other application is consuming lot of CPU or memory. -- Original Message -- On 31 Mar 2005, 04:43:10 PM, Viorel Dragomir writes: It might be a hardware related problem. Try to change the memory. Viorel Dragomir . .. --- - Original Message - From: Steve Vanspall To: tomcat-user@jakarta.apache.org Sent: Thursday, March 31, 2005 09:38 Subject: Tomcat Hang on Linux (hangs the entire system) Hi there, I am posting this in a few areas because I cannot pinpoint where the problem stems from. I have a standard Pentium III bases pc running linux. It has only 380 meg (or therabouts) of ram Using IBM JVM 1.4.1 and tomcat 4.1.18 (I know there are later version, but they all hang) I have 2 webapps running. One of them uses Apache to translate two different domain to the right ibay for it's content but uses the same code base. The second webapp is accessed, currently, using http://www.mycomapny.com:8080/MyApp style URL. The webapp just hangs. It will not load any pages, and when it hangs, both webapps hang. So I think this is a Tomcat or Java or Linux error. Once the hang occurs I cannot do a ps -ef as this also hangs. My only option is to reboot the machine. But it hangs half way and has to be physically powered off. We are going to put a new, more powerful computer in there, but for now I wanted to see if anyone else had experienced such a problem. Can you give me some pointers as to where to look for the source of the problem. This has happened before, and I got no information about it. I know it's a pretty vague explanation, but I don't know what more informationI can give you. The log files do not show any errors, and it never happens at the same point in the web application. At first I thought it happen when concurrent users logged in, but that's not the case either, and I have trimmed down the sychornicity management when accesing Singletons in my web app. Now I have been through all my code, and cannot find anything that should be causing an error. I have run the code under a number of different cirsumstances on my development machine (Windows 2000) and everything runs without a problem. Any help would be appreciated Regards Steve - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Redhat Tomcat support
All, I'm relatively new to Tomcat support. Has any had any experience with RedHat support for Tomcat? We're currently running Tomcat 4.1 and would have to upgrade to 5.5 to get support from RedHat. Is it worth it? Jim James H. Trice Haas TCM, Inc. [EMAIL PROTECTED] (512) 519-3955
RE: Redhat Tomcat support
All, Thanks for the feedback. I'm coming from an environment that was more SUN than anything else and my experience with Redhat support has been very limited. This helps. Jim -Original Message- From: Benson Margulies [mailto:[EMAIL PROTECTED] Sent: Monday, March 14, 2005 5:43 PM To: Tomcat Users List Subject: RE: Redhat Tomcat support Personally, I've never gotten anything from Redhat but a bill. Their support agreement is a masterpiece of extracting the maximum money for the minimum in actual support. Pretty much anything you might actually need help with is carefully excluded. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: tomcat fails on FC3
David, If you install the j2sdk from http://java.sun.com it should replace the links in /etc/alternatives to java and javac from that kit. Jim T. -Original Message- From: David Smithson [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 08, 2005 3:10 PM To: tomcat-user@jakarta.apache.org Subject: tomcat fails on FC3 Hi all. I followed the instructions in RUNNING.txt from the binary distribution of Tomcat 5. I'm having some trouble and would appreciate a little help. What am I doing wrong? When I run startup.sh, I get this output in the shell: Using CATALINA_BASE: /usr/share/tomcat5 Using CATALINA_HOME: /usr/share/tomcat5 Using CATALINA_TMPDIR: /usr/share/tomcat5/temp Using JRE_HOME: /usr And logs/catalina.out shows: libgcj-java-placeholder.sh This script is a placeholder for the /usr/bin/java master link required by jpackage.org conventions. libgcj's rmiregistry, rmic and jar tools are now slave symlinks to these masters, and are managed by the alternatives(8) system. This change was necessary because the rmiregistry, rmic and jar tools installed by previous versions of libgcj conflicted with symlinks installed by jpackage.org JVM packages. Exception in thread main java.lang.NoClassDefFoundError: while resolving class: org.apache.catalina.startup.Bootstrap at java.lang.VMClassLoader.resolveClass(java.lang.Class) (/usr/lib/libgcj.so.5.0.0) at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.5.0.0) at java.lang.Class.forName(java.lang.String, boolean, java.lang.ClassLoader) (/usr/lib/libgcj.so.5.0.0) at java.lang.Class.forName(java.lang.String) (/usr/lib/libgcj.so.5.0.0) at gnu.gcj.runtime.FirstThread.run() (/usr/lib/libgcj.so.5.0.0) at _Jv_ThreadRun(java.lang.Thread) (/usr/lib/libgcj.so.5.0.0) at _Jv_RunMain(java.lang.Class, byte const, int, byte const, boolean) (/usr/lib/libgcj.so.5.0.0) at __gcj_personality_v0 (/usr/share/tomcat5/java.endorsed.dirs=/usr/share/tomcat5/common/endorsed) at __libc_start_main (/lib/tls/libc-2.3.4.so) at _Jv_RegisterClasses (/usr/share/tomcat5/java.endorsed.dirs=/usr/share/tomcat5/common/endorsed) Caused by: java.lang.ClassNotFoundException: javax.management.ObjectName not found in [file:/usr/share/tomcat5/bin/bootstrap.jar, file:/usr/share/tomcat5/bin/commons-logging-api.jar, core:/] at java.net.URLClassLoader.findClass(java.lang.String) (/usr/lib/libgcj.so.5.0.0) at gnu.gcj.runtime.VMClassLoader.findClass(java.lang.String) (/usr/lib/libgcj.so.5.0.0) at java.lang.ClassLoader.loadClass(java.lang.String, boolean) (/usr/lib/libgcj.so.5.0.0) at _Jv_FindClass(_Jv_Utf8Const, java.lang.ClassLoader) (/usr/lib/libgcj.so.5.0.0) at java.lang.Class.forName(java.lang.String, boolean, java.lang.ClassLoader) (/usr/lib/libgcj.so.5.0.0) at _Jv_BytecodeVerifier.verify_instructions_0() (/usr/lib/libgcj.so.5.0.0) at _Jv_VerifyMethod(_Jv_InterpMethod) (/usr/lib/libgcj.so.5.0.0) at _Jv_PrepareClass(java.lang.Class) (/usr/lib/libgcj.so.5.0.0) at _Jv_WaitForState(java.lang.Class, int) (/usr/lib/libgcj.so.5.0.0) at java.lang.VMClassLoader.linkClass0(java.lang.Class) (/usr/lib/libgcj.so.5.0.0) at java.lang.VMClassLoader.resolveClass(java.lang.Class) (/usr/lib/libgcj.so.5.0.0) ...9 more -- David Smithson [EMAIL PROTECTED] Custom Film Effects - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
