Problems with Backup Manager
Hi all, We are trying to setup session replication using tomcat as webserver. We have two nodes communicating together via multicast address groups using asynchronous communication channel. As an underlying platform, we are using liferay portal. We are having problems using Backup Manager especially when deploying hot portlets. The attached error (Backup Error.txt) is being produced. A lot of research has been carried out but we did not find any reasonable solution. You can also find a copy of our server.xml file in which all settings related to tomcat are found there. Any help would be greatly appreciated. Regards, Josef Pullicino Systems Administrator GO GO, Fra Diego Street, Marsa, MRS 1501, Malta. t +356 2594 6827 f +356 2124 0112 w www.go.com.mt This email and any files or content transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. The Company and the originator of this email accept no liability for the content of this email, or for the consequences of any actions taken on the basis of the information provided, unless that information is subsequently confirmed in writing. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. Warning: Although the Company and the originator have taken reasonable precautions to ensure no viruses are present in this email, the company cannot accept responsibility for any loss or damage arising from the use of this email or attachments. Nov 22, 2010 11:42:02 AM org.apache.catalina.ha.session.BackupManager start SEVERE: Unable to start BackupManager java.lang.NullPointerException at org.apache.catalina.ha.session.BackupManager.start(BackupManager.java:195) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351) at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1116) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1214) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:293) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1337) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590) at java.lang.Thread.run(Thread.java:619) Nov 22, 2010 11:42:02 AM org.apache.catalina.core.StandardContext start SEVERE: Error manager.start() LifecycleException: Failed to start BackupManager: java.lang.NullPointerException at org.apache.catalina.ha.session.BackupManager.start(BackupManager.java:208) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351) at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1116) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1214) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:293) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1337) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1601) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1610) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1590) at java.lang.Thread.run(Thread.java:619) Nov 22, 2010 11:42:02 AM org.apache.catalina.core.StandardContext start SEVERE: Context [/go-portal-login-theme] startup failed due to previous errors?xml version='1.0' encoding='utf-8'? !-- 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,
Error uploading a large file with slow connection
Hi list, We are using tomcat with Railo to use CFML and getting an strange issue.. When we try to upload a file of 2~4MB on a slow connection 15~20kb/s the request is completed but all of the form fields are dropped.. which causes an error.. How to reproduce the error with a small CFM code: // form_upload.cfm form name=form1 action=upload.cfm method=post enctype=multipart/form-data File: input type=file name=fileData input type=submit /form //upload.cfm cfsetting requesttimeout=36000 / cffile action=upload filefield=form.fileData destination=#application.tempDir# nameconflict=makeunique / cfdump var=#cffile# This only happens with large files and/or slow connection. Here is some information about the test environment: - Railo 3.2.0.001 rc - OS Linux (2.6.18-164.15.1.el5) = CentOS 5.4 - Servlet Container Apache Tomcat/6.0.20 and also tested with Apache Tomcat/6.0.29 the tomcat configuration doesn't has many changes, and it seems not have any change that would affect this behavior. tomcat's server.xml Connector port=8080 protocol=HTTP/1.1 connectionTimeout=2 redirectPort=8443 / tomcat's web.xml (timeout=30 minutes) session-config session-timeout30/session-timeout /session-config apache-tomcat workers.properties type=ajp13 socket_timeout=300 So what is important to notice: 1) socket_timeout just kill inactive connections, in other words, connections with 5 minutes without any activity. The error occurs even for upload minor that 5 minutes (socket_timeout) and longer than 50 seconds (Railo's default request timeout), like a 2 minutes upload. 2) anyway, we commented this parameter (to infinity) and the same error occurred 3) We create a simple simple CFM file that just (a) sleep a couple of seconds and (b) print a Ticket Count and it ran for more than one hour, user cfsetting requesttimeout=36000 This test runs fine, that makes me deduce the issue occurs only when I have a cffile action=upload in the template In other words: A normal CFM request runs for so long, fine. An upload, not. 4) Backing to upload issue: I's important to note the request finishes perfectly. In other words: Railo continues processing this request after the upload. The problem is, in that case, the form scope/variables is empty and Railo raises an error saying form field [form.my_upload_field] is not a file field We also put a cfdump var=#form# before the cffile tag, it outputs empty. In other words: Any form field is sent. 5) This issue only occurs for long uploads. If I execute the same upload, for the same file, in a fast connection, it works fine. The error only occurs on slow connections and larger files. Once slow connections is so common in Brazil, we can't upload larger files, and I mean as larger files, files with a few MegaBytes of size. To reproduce this issues you'll need to simulate a slower connections. Some thing like 5-10KB/s (64-128 bit/s). In many cases it's normal in Brazil, specially when accessing international sites or sites hosted abroad. You can do it using the Firefox Add-on Firefox Throttle (Download herehttp://www.uselessapplications.com/en/Application/FirefoxThrottle.aspx?src=0%3Affthrottle%3Aoptions ). Set a 10 KB/s link and upload a file with size of 3-5 Mb. Our Railo default timeout (Railo Web Admin - Application - Request timeout) is set to 50 seconds and you can use a cfsetting requesttimeout=3600 (1 hour) in your CFML code for that upload test. 6) It seems the error only occurs for cffile action=upload for slower connections. Import to note that the request is processed by Railo. I can even process other CFML codes before the cffile action=upload tag. It seems that some internal procedure is subjected default request timeout. In other words: It seems some internal procedure/function is NOT following the cfsetting requesttimout parameter. The stacktrace: form field [form.fileData] is not a file field at railo.runtime.tag.FileTag.getFormItem(FileTag.java:833):833 at railo.runtime.tag.FileTag.actionUpload(FileTag.java:666):666 at railo.runtime.tag.FileTag.doStartTag(FileTag.java:299):299 at admin.tools.upload_cfm$cf.call(/wwwroot/app/admin/tools/upload.cfm:7):7 at railo.runtime.PageContextImpl.doInclude(PageContextImpl.java:763):763 at railo.runtime.listener.ModernAppListener._onRequest(ModernAppListener.java:199):199 at railo.runtime.listener.MixedAppListener.onRequest(MixedAppListener.java:23):23 at railo.runtime.PageContextImpl.execute(PageContextImpl.java:1972):1972 at railo.runtime.engine.CFMLEngineImpl.serviceCFML(CFMLEngineImpl.java:280):280 at railo.loader.servlet.CFMLServlet.service(CFMLServlet.java:32):32 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717):717 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290):290 at
RE: Problems with Backup Manager
From: Josef Pullicino [mailto:josef.pullic...@go.com.mt] Subject: Problems with Backup Manager We are having problems using Backup Manager especially when deploying hot portlets. Care to give us a hint about the version of Tomcat you're using, the JVM it's running on, the platform that's running in, whether or not you're using APR, and how the two Tomcat's are connected? (Same machine, private LAN, or ???) What's in the Context element for the webapp(s) of interest? Do you have distributable set in the webapp's WEB-INF/web.xml file or Context element? - 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: Problems with Backup Manager
On 22/11/2010 14:35, Caldarale, Charles R wrote: From: Josef Pullicino [mailto:josef.pullic...@go.com.mt] Subject: Problems with Backup Manager We are having problems using Backup Manager especially when deploying hot portlets. Care to give us a hint about the version of Tomcat you're using, the JVM it's running on, the platform that's running in, whether or not you're using APR, and how the two Tomcat's are connected? (Same machine, private LAN, or ???) What's in the Context element for the webapp(s) of interest? Do you have distributable set in the webapp's WEB-INF/web.xml file or Context element? The root cause of these issues looks like a faulty listener. quote SEVERE: Context [/go-portal-login-theme] startup failed due to previous errors /quote The stack trace for that will be in the logs. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Problems with Backup Manager
On 22/11/2010 14:38, Mark Thomas wrote: On 22/11/2010 14:35, Caldarale, Charles R wrote: From: Josef Pullicino [mailto:josef.pullic...@go.com.mt] Subject: Problems with Backup Manager We are having problems using Backup Manager especially when deploying hot portlets. Care to give us a hint about the version of Tomcat you're using, the JVM it's running on, the platform that's running in, whether or not you're using APR, and how the two Tomcat's are connected? (Same machine, private LAN, or ???) What's in the Context element for the webapp(s) of interest? Do you have distributable set in the webapp's WEB-INF/web.xml file or Context element? The root cause of these issues looks like a faulty listener. Ignore the above - I was reading too quickly. quote SEVERE: Context [/go-portal-login-theme] startup failed due to previous errors /quote The stack trace for that will be in the logs. There is however, likely to be be some useful information earlier in the logs. mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Problems with Backup Manager
Hi Chuck, Thanks for your reply. Details as follows: Tomcat version: 6.0.18 JVM:1.6.0_21 OS: Red Hat Enterprise Linux Server release 5.5 (Tikanga) Tomcats are on different machines with the same OS. They are connected with multicast address group, this being 239.0.0.1. I have included Context distributable=true into tomcat's context.xml. Thanks, Josef -Original Message- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: 22 November 2010 15:36 To: Tomcat Users List Subject: RE: Problems with Backup Manager From: Josef Pullicino [mailto:josef.pullic...@go.com.mt] Subject: Problems with Backup Manager We are having problems using Backup Manager especially when deploying hot portlets. Care to give us a hint about the version of Tomcat you're using, the JVM it's running on, the platform that's running in, whether or not you're using APR, and how the two Tomcat's are connected? (Same machine, private LAN, or ???) What's in the Context element for the webapp(s) of interest? Do you have distributable set in the webapp's WEB-INF/web.xml file or Context element? - 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 smime.p7s Description: S/MIME cryptographic signature
Re: Several hosts within one tomcat / catch-all problem
2010/11/21 David Fisher dfis...@jmlafferty.com: and use JMX or call mapper.addHostAlias(..) directly to add aliases programmatically at runtime. (though there is no guarantee that the Mapper API does not change between Tomcat minor releases). I investigated what an implementation of this might look like at a higher level. In looking through the Tomcat interfaces it looks like this is similar to the notion of automatically creating Context for users with a UserConfig listener. It would be an AliasConfig class extending HostConfig. Listener className=my.web.server.listener.package.AliasConfig aliases=/path/to/alias/file/ Then in the start event function it is as simple as host.addAlias(subDomainName); for each alias found in the aliases file. Does this make sense? It does make sense. o.a.c.connector.MapperListener updates the mapper when the aliases list in the Host is changed. Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Error uploading a large file with slow connection
On 22/11/2010 11:20, Odilo Schwade Junior wrote: The stacktrace: form field [form.fileData] is not a file field at railo.runtime.tag.FileTag.getFormItem(FileTag.java:833):833 at railo.runtime.tag.FileTag.actionUpload(FileTag.java:666):666 at railo.runtime.tag.FileTag.doStartTag(FileTag.java:299):299 at admin.tools.upload_cfm$cf.call(/wwwroot/app/admin/tools/upload.cfm:7):7 at railo.runtime.PageContextImpl.doInclude(PageContextImpl.java:763):763 at Seems pretty clear to me. It's failing when it detects one of the other form fields. You need to handle that in your code. p 0x62590808.asc Description: application/pgp-keys signature.asc Description: OpenPGP digital signature
Re: Deployment issues
Hi everybody, After having check the log files, several things appear : 22 nov. 2010 18:02:30 org.apache.catalina.startup.HostConfig deployWAR INFO: Déploiement de l'archive ..war de l'application web java.io.FileNotFoundException: /opt/victor/tomcat-base/webapps/ROOT.war (Permission denied) The second line translation is : INFO : deploying archive ..war of web application Where does this error come from ? Secondly, I have noticed that if I try to delete the ROOT.war in webapps and I try to deploy my index.war at the location / a ROOT.war appears with the exact same size that the index.war, so I imagine that my war is successfully copied. I tried to access the / of my server and I saw the following error : : java.io.FileNotFoundException: /opt/victor/tomcat-base/work/Catalina/localhost/manager/ROOT.war (No such file or directory) I checked and indeed this file is not in the directory. Is it supposed to be there to be deployed ? I am really lost on this issue I don't understand what is its problem... Thank you for your help Victor 2010/11/20 Konstantin Kolinko knst.koli...@gmail.com 2010/11/21 Victor Kabdebon victor.kabde...@gmail.com: Hiello Konstantin Yes I do have access to the HTML manager interface, but nothing is deployed in the list. I will check the context file in conf/catalina/localhost, I don't have access to it right now, I didn't think about it. Thank you very much for your help. Is there anything else that I might have missed ? The log files? There might be something interesting there. Also I should say that error handling during deploy and undeploy operations was improved in 6.0.24. See CVE-2009-2901 http://tomcat.apache.org/security-6.html Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
[SECURITY] CVE-2010-4172: Apache Tomcat Manager application XSS vulnerability
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
CVE-2010-4172: Apache Tomcat Manager application XSS vulnerability
Severity: Tomcat 7.0.x - Low, Tomcat 6.0.x - Moderate
Vendor: The Apache Software Foundation
Versions Affected:
- - Tomcat 7.0.0 to 7.0.4
- Not affected in default configuration.
- Affected if CSRF protection is disabled
- Additional XSS issues if web applications are untrusted
- - Tomcat 6.0.12 to 6.0.29
- Affected in default configuration
- Additional XSS issues if web applications are untrusted
- - Tomcat 5.5.x
- Not affected
Description:
The session list screen (provided by sessionList.jsp) in affected
versions uses the orderBy and sort request parameters without applying
filtering and therefore is vulnerable to a cross-site scripting attack.
Users should be aware that Tomcat 6 does not use httpOnly for session
cookies by default so this vulnerability could expose session cookies
from the manager application to an attacker.
A review of the Manager application by the Apache Tomcat security team
identified additional XSS vulnerabilities if the web applications
deployed were not trusted.
Example:
GET
/manager/html/sessions?path=/sort=scriptalert('xss')/scriptorder=ASCaction=injectSessionsrefresh=Refresh+Sessions+list
Mitigation:
Users of affected versions should apply one of the following mitigations
- - Tomcat 7.0.0 to 7.0.4
- Remove the Manager application
- Remove the sessionList.jsp and sessionDetail.jsp files
- Ensure the CSRF protection is enabled
- Apply the patch 7.0.4 patch (see below)
- Update to 7.0.5 when released
- - Tomcat 6.0.12 to 6.0.29
- Remove the Manager application
- Remove the sessionList.jsp and sessionDetail.jsp files
- Apply the patch for 6.0.29 (see below)
- Update to 6.0.30 when released
No release date has been set for the next Tomcat 7.0.x and Tomcat 6.0.x
releases.
Credit:
The original issue was discovered by Adam Muntner of Gotham Digital Science.
Additional issues were identified by the Tomcat security team as a
result of reviewing the original issue.
References:
http://tomcat.apache.org/security.html
http://tomcat.apache.org/security-7.html
http://tomcat.apache.org/security-6.html
Note: The patches The Apache Tomcat Security Team
Patch for 6.0.29
Index: webapps/manager/WEB-INF/jsp/sessionDetail.jsp
===
- --- webapps/manager/WEB-INF/jsp/sessionDetail.jsp (revision 1037769)
+++ webapps/manager/WEB-INF/jsp/sessionDetail.jsp (working copy)
@@ -30,8 +30,10 @@
% String path = (String) request.getAttribute(path);
Session currentSession =
(Session)request.getAttribute(currentSession);
HttpSession currentHttpSession = currentSession.getSession();
- - String currentSessionId = currentSession.getId();
- - String submitUrl =
((HttpServletRequest)pageContext.getRequest()).getRequestURL().toString();
+ String currentSessionId = JspHelper.escapeXml(currentSession.getId());
+ String submitUrl = JspHelper.escapeXml(
+ ((HttpServletRequest)
pageContext.getRequest()).getRequestURI() +
+ ?path= + path);
%
head
meta http-equiv=content-type content=text/html;
charset=iso-8859-1/
@@ -45,7 +47,7 @@
titleSessions Administration: details for %= currentSessionId
%/title
/head
body
- -h1Details for Session %= JspHelper.escapeXml(currentSessionId) %/h1
+h1Details for Session %= currentSessionId %/h1
table style=text-align: left; border=0
tr
@@ -54,7 +56,7 @@
/tr
tr
thGuessed Locale/th
- -td%= JspHelper.guessDisplayLocaleFromSession(currentSession)
%/td
+td%=
JspHelper.escapeXml(JspHelper.guessDisplayLocaleFromSession(currentSession))
%/td
/tr
tr
thGuessed User/th
@@ -120,7 +122,7 @@
String attributeName = (String)
attributeNamesEnumeration.nextElement();
%
tr
- - td align=centerform action=%= submitUrl
%divinput
type=hidden name=path value=%= path % /input type=hidden
name=action value=removeSessionAttribute /input type=hidden
name=sessionId value=%= currentSessionId % /input type=hidden
name=attributeName value=%= attributeName % /input type=submit
value=Remove //div/form/td
+ td align=centerform action=%= submitUrl
%divinput
type=hidden name=action value=removeSessionAttribute /input
type=hidden name=sessionId value=%= currentSessionId % /input
type=hidden name=attributeName value=%=
JspHelper.escapeXml(attributeName) % /input type=submit
value=Remove //div/form/td
td%= JspHelper.escapeXml(attributeName) %/td
td% Object attributeValue =
currentHttpSession.getAttribute(attributeName); %span title=%=
attributeValue == null ? : attributeValue.getClass().toString()
%%= JspHelper.escapeXml(attributeValue) %/span/td
/tr
Index: webapps/manager/WEB-INF/jsp/sessionsList.jsp
[ANN] New Tomcat committer: Christopher Schultz (schultz)
On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: [ANN] New Tomcat committer: Christopher Schultz (schultz)
Congrats, Chris!! -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Monday, November 22, 2010 1:17 PM To: Tomcat Users List; Tomcat Developers List Subject: [ANN] New Tomcat committer: Christopher Schultz (schultz) On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. 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: [ANN] New Tomcat committer: Christopher Schultz (schultz)
He is the man! Congrats!! From: barry.l.pro...@citi.com To: users@tomcat.apache.org; d...@tomcat.apache.org Date: Mon, 22 Nov 2010 14:19:43 -0600 Subject: RE: [ANN] New Tomcat committer: Christopher Schultz (schultz) Congrats, Chris!! -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Monday, November 22, 2010 1:17 PM To: Tomcat Users List; Tomcat Developers List Subject: [ANN] New Tomcat committer: Christopher Schultz (schultz) On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. 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: [ANN] New Tomcat committer: Christopher Schultz (schultz)
On 22/11/2010 19:16, Mark Thomas wrote: On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. Nice. Welcome Chris! p Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org 0x62590808.asc Description: application/pgp-keys signature.asc Description: OpenPGP digital signature
Re: [ANN] New Tomcat committer: Christopher Schultz (schultz)
Mark Thomas wrote: On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. Wälcöme Chris. He the man. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [ANN] New Tomcat committer: Christopher Schultz (schultz)
grats chris! :-) On Mon, Nov 22, 2010 at 9:48 PM, André Warnier a...@ice-sa.com wrote: Mark Thomas wrote: On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. Wälcöme Chris. He the man. - 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: [ANN] New Tomcat committer: Christopher Schultz (schultz)
On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. And you thought you were busy before... Congratulations. - 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
Server affinity instead of session affinity
Hi guys! There is any available configuration to define server affinity instead of session affinity? Our architecture setup is based on multiple JVMs (tomcat) instances in each server (machine). The goal is to send all requests (within a session) from a client browser to the same machine. Is it possible to perform it using jvmRoute? Thanks a lot
RE: Server affinity instead of session affinity
From: Andrew Hole [mailto:andremailingl...@gmail.com] Subject: Server affinity instead of session affinity The goal is to send all requests (within a session) from a client browser to the same machine. Is it possible to perform it using jvmRoute? Can't you just set the jvmRoute value for each Tomcat on the same box to the same value? That would presume you're doing something to share sessions across all of the Tomcats running on one box. - Chuck P.S. Don't cross-post. 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: Server affinity instead of session affinity
Andrew Hole wrote: Hi guys! There is any available configuration to define server affinity instead of session affinity? Our architecture setup is based on multiple JVMs (tomcat) instances in each server (machine). The goal is to send all requests (within a session) from a client browser to the same machine. Is it possible to perform it using jvmRoute? I am not sure I understand the question correctly, but if I do, that's what it does, no ? Does sending to the same Tomcat not imply sending to the same machine ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [ANN] New Tomcat committer: Christopher Schultz (schultz)
2010/11/22 Mark Thomas ma...@apache.org: On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Welcome! Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [ANN] New Tomcat committer: Christopher Schultz (schultz)
Congratulations. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Server affinity instead of session affinity
No... Session affinity (jvmRoute in JSESSION ID) implies sending to the same tomcat instance (same JVM), not for the same machine. Some idea? On Mon, Nov 22, 2010 at 9:10 PM, André Warnier a...@ice-sa.com wrote: Andrew Hole wrote: Hi guys! There is any available configuration to define server affinity instead of session affinity? Our architecture setup is based on multiple JVMs (tomcat) instances in each server (machine). The goal is to send all requests (within a session) from a client browser to the same machine. Is it possible to perform it using jvmRoute? I am not sure I understand the question correctly, but if I do, that's what it does, no ? Does sending to the same Tomcat not imply sending to the same machine ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: users Digest 22 Nov 2010 20:46:42 -0000 Issue 10094
On Monday, November 22, 2010 15:46:42 users-digest-h...@tomcat.apache.org wrote: On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. Mark Do you mean he wasn't?! Oh, I should've ignored all his posts! ;) -- Nicholas Sushkin smime.p7s Description: S/MIME cryptographic signature
Re: Server affinity instead of session affinity
Andrew Hole wrote: No... Session affinity (jvmRoute in JSESSION ID) implies sending to the same tomcat instance (same JVM), not for the same machine. I guess that I still don't get it. The same Tomcat instance /is/, per definition, on the same machine. Or do you want to send the request to a /different/ Tomcat instance, but only one which is on the same machine ? And if yes, why would you want to do that ? In other words, why would you /not/ want to send the request to the same Tomcat on the same machine ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Server affinity instead of session affinity
An example: Machine 1: Tomcat A Tomcat B On Mon, Nov 22, 2010 at 11:05 PM, André Warnier a...@ice-sa.com wrote: Andrew Hole wrote: No... Session affinity (jvmRoute in JSESSION ID) implies sending to the same tomcat instance (same JVM), not for the same machine. I guess that I still don't get it. The same Tomcat instance /is/, per definition, on the same machine. Or do you want to send the request to a /different/ Tomcat instance, but only one which is on the same machine ? And if yes, why would you want to do that ? In other words, why would you /not/ want to send the request to the same Tomcat on the same machine ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Server affinity instead of session affinity
Sorry for the inconvenience. I sent the email with wrong content. An example: Machine 1: Tomcat A App1 App2 Tomcat B App3 App4 Machine 2: Tomcat C App1 App2 Tomcat D App3 App4 Using session affinity, if I make a request to App1 and the Tomcat A in Machine 1 is selected. All the sequent requests will be redirected (within the same session) to the same Tomcat (tomcat A). However, if i make a request to App3, Tomcat B (machine 1) or Tomcat D (machine 2) could be selected. What I really want is that the request to App3 could be done to Tomcat B in machine 1 (the request was done using the same browser client). Thanks On Mon, Nov 22, 2010 at 11:23 PM, Andrew Hole andremailingl...@gmail.comwrote: An example: Machine 1: Tomcat A Tomcat B On Mon, Nov 22, 2010 at 11:05 PM, André Warnier a...@ice-sa.com wrote: Andrew Hole wrote: No... Session affinity (jvmRoute in JSESSION ID) implies sending to the same tomcat instance (same JVM), not for the same machine. I guess that I still don't get it. The same Tomcat instance /is/, per definition, on the same machine. Or do you want to send the request to a /different/ Tomcat instance, but only one which is on the same machine ? And if yes, why would you want to do that ? In other words, why would you /not/ want to send the request to the same Tomcat on the same machine ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Server affinity instead of session affinity
Andrew Hole wrote: Sorry for the inconvenience. I sent the email with wrong content. An example: Machine 1: Tomcat A App1 App2 Tomcat B App3 App4 Machine 2: Tomcat C App1 App2 Tomcat D App3 App4 Using session affinity, if I make a request to App1 and the Tomcat A in Machine 1 is selected. All the sequent requests will be redirected (within the same session) to the same Tomcat (tomcat A). However, if i make a request to App3, Tomcat B (machine 1) or Tomcat D (machine 2) could be selected. What I really want is that the request to App3 could be done to Tomcat B in machine 1 (the request was done using the same browser client). Ok, now I get it. My next question is : why ? Why is it important that, having started on Tomcat A with App1, the same client would get App3 on Tomcat B, rather than on Tomcat D ? What do Tomcat A and Tomcat B have in common, that Tomcat C and D don't ? And vice-versa. And , should your scheme still work if in the future, Tomcat A and Tomcat B were split onto two separate machines ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Server affinity instead of session affinity
There is a middleware-to-middleware connection between Tomcat A and Tomcat B using RMI (point-to-point protocol) and Tomcat A has in-memory data useful to App3. The same aproach in the second server: applications in tomcat d have RMI communication to tomcat c. thanks On Mon, Nov 22, 2010 at 11:58 PM, André Warnier a...@ice-sa.com wrote: Andrew Hole wrote: Sorry for the inconvenience. I sent the email with wrong content. An example: Machine 1: Tomcat A App1 App2 Tomcat B App3 App4 Machine 2: Tomcat C App1 App2 Tomcat D App3 App4 Using session affinity, if I make a request to App1 and the Tomcat A in Machine 1 is selected. All the sequent requests will be redirected (within the same session) to the same Tomcat (tomcat A). However, if i make a request to App3, Tomcat B (machine 1) or Tomcat D (machine 2) could be selected. What I really want is that the request to App3 could be done to Tomcat B in machine 1 (the request was done using the same browser client). Ok, now I get it. My next question is : why ? Why is it important that, having started on Tomcat A with App1, the same client would get App3 on Tomcat B, rather than on Tomcat D ? What do Tomcat A and Tomcat B have in common, that Tomcat C and D don't ? And vice-versa. And , should your scheme still work if in the future, Tomcat A and Tomcat B were split onto two separate machines ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [ANN] New Tomcat committer: Christopher Schultz (schultz)
On Mon, Nov 22, 2010 at 11:16 AM, Mark Thomas ma...@apache.org wrote: On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. Major props to Chris :-) -- Hassan Schroeder hassan.schroe...@gmail.com twitter: @hassan - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
mod-jk not called after PerlHandler gets called
I posted this thread in mod_perl group:
http://www.gossamer-threads.com/lists/modperl/modperl/102273
I thought I should ask here as well. I have a perl handler in VirtualHost:
JkMount /bridge/* tc
PerlModule Apache2::Rules2
SetHandler modperl
PerlInitHandler Apache2::Rules2
PerlSendHeader On
This Handler just returns DECLINED. After this handler is called the
apache web server tries to find the document on the web server instead
of forwarding it to JkMount ... nod-jk worker. I get 404 and in
the access logs of apache I see that it's trying to locate the
document on the same server instead of using JkMount to forward the
request to mod-jk.
How can I make this work? There is nothing online on this topic.
Rules2.pm
package Apache2::Rules2;
#use lib '/home/.mohit/mod_perl-2.0.4/lib';
use strict;
use warnings;
use Apache2::Const qw(:common);
use Apache2::RequestRec ();
use Apache2::RequestIO ();
sub handler {
my $r = shift;
#$r-content_type('text/plain');
#$r-print(mod_perl rules!\n);
return DECLINED; # We must return a status to mod_perl
}
1; # This is a perl module so we must return true to perl
~
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clearThreadLocalMap and NullPointerException
With Tomcat 6.0.29 and Java 6u22, when I'm stopping Tomcat I'm getting
the attached log, which at the end is a NullPointerException thrown from
AbstractCollection#toString() which is called from clearThreadLocalMap().
java.lang.NullPointerException
at java.util.AbstractCollection.toString(AbstractCollection.java:415)
at
org.apache.catalina.loader.WebappClassLoader.clearThreadLocalMap(WebappClassLoader.java:2379)
at
org.apache.catalina.loader.WebappClassLoader.clearReferencesThreadLocals(WebappClassLoader.java:2304)
at
org.apache.catalina.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:1886)
at
org.apache.catalina.loader.WebappClassLoader.stop(WebappClassLoader.java:1798)
Unfortunately, I can't tell what the key or value is due to this.
The web application does a GC when it unloads ZeroC's Ice runtime to
ensure that all objects that implement #finialize() are properly
finalized, otherwise I get even more exceptions. This is seen in Java's
GC stats in the log.
Any suggestions in tracking this down? Would a custom Tomcat build that
gets each key and value in a try/catch block be useful?
Regards,
Blair
Nov 22, 2010 5:49:06 PM org.apache.coyote.http11.Http11Protocol pause
INFO: Pausing Coyote HTTP/1.1 on http-8080
Nov 22, 2010 5:49:07 PM org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina
Nov 22, 2010 5:49:07 PM org.apache.catalina.core.ApplicationContext log
INFO: Closing Spring root WebApplicationContext
37.480: [GC [PSYoungGen: 1057265K-9094K(7340032K)]
1058825K-10654K(15728640K), 0.0128710 secs] [Times: user=0.06 sys=0.00,
real=0.01 secs]
37.493: [Full GC (System) [PSYoungGen: 9094K-0K(7340032K)] [ParOldGen:
1560K-10200K(8388608K)] 10654K-10200K(15728640K) [PSPermGen:
45121K-45016K(85184K)], 0.2334650 secs] [Times: user=0.50 sys=0.01, real=0.23
secs]
Nov 22, 2010 5:49:12 PM org.apache.catalina.loader.WebappClassLoader
clearReferencesThreads
SEVERE: The web application [/foobar] appears to have started a thread named
[com.google.common.base.internal.Finalizer] but has failed to stop it. This is
very likely to create a memory leak.
Nov 22, 2010 5:49:12 PM org.apache.catalina.loader.WebappClassLoader
clearReferencesThreads
SEVERE: The web application [/foobar] appears to have started a thread named
[com.google.common.base.internal.Finalizer] but has failed to stop it. This is
very likely to create a memory leak.
Nov 22, 2010 5:49:12 PM org.apache.catalina.loader.WebappClassLoader
clearReferencesThreads
SEVERE: The web application [/foobar] appears to have started a thread named
[Timer-1] but has failed to stop it. This is very likely to create a memory
leak.
Nov 22, 2010 5:49:12 PM org.apache.catalina.loader.WebappClassLoader
clearReferencesThreads
SEVERE: The web application [/foobar] appears to have started a thread named
[Thread-21] but has failed to stop it. This is very likely to create a memory
leak.
Nov 22, 2010 5:49:12 PM org.apache.catalina.loader.WebappClassLoader
clearThreadLocalMap
SEVERE: The web application [/foobar] created a ThreadLocal with key of type
[com.sun.jna.Native$3] (value [com.sun.jna.nativ...@6197cc]) and a value of
type [java.lang.Integer] (value [2]) but failed to remove it when the web
application was stopped. This is very likely to create a memory leak.
Nov 22, 2010 5:49:12 PM org.apache.catalina.loader.WebappClassLoader
clearThreadLocalMap
SEVERE: The web application [/foobar] created a ThreadLocal with key of type
[com.sun.jna.Structure$1] (value [com.sun.jna.structur...@734d246]) and a value
of type [java.util.HashMap] (value [{}]) but failed to remove it when the web
application was stopped. This is very likely to create a memory leak.
Nov 22, 2010 5:49:12 PM org.apache.catalina.startup.HostConfig undeployApps
WARNING: Error while removing context [/foobar]
java.lang.NullPointerException
at java.util.AbstractCollection.toString(AbstractCollection.java:415)
at
org.apache.catalina.loader.WebappClassLoader.clearThreadLocalMap(WebappClassLoader.java:2379)
at
org.apache.catalina.loader.WebappClassLoader.clearReferencesThreadLocals(WebappClassLoader.java:2304)
at
org.apache.catalina.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:1886)
at
org.apache.catalina.loader.WebappClassLoader.stop(WebappClassLoader.java:1798)
at org.apache.catalina.loader.WebappLoader.stop(WebappLoader.java:738)
at
org.apache.catalina.core.StandardContext.stop(StandardContext.java:4812)
at
org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:924)
at
org.apache.catalina.startup.HostConfig.undeployApps(HostConfig.java:1319)
at org.apache.catalina.startup.HostConfig.stop(HostConfig.java:1290)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:323)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at
Re: users Digest 22 Nov 2010 20:46:42 -0000 Issue 10094
Nicholas Sushkin nsush...@openfinance.com wrote in message news:201011221714.26614.nsush...@openfinance.com... On Monday, November 22, 2010 15:46:42 users-digest-h...@tomcat.apache.org wrote: On behalf of the Tomcat committers I am pleased to announce that Christopher Schultz (schultz) has been voted in as a new Tomcat committer. Please join me in welcoming him. Mark Do you mean he wasn't?! Oh, I should've ignored all his posts! ;) That is the thing about Open Source. Anyone can download the code and look through it, learn it, and answer questions/supply patches. When we get tired of applying your patches, we say do it yourself, and elect to committer ;). -- Nicholas Sushkin - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: OutOfMemoryError some time on some tomcat!!!!1
hi xu cheng, having a powerful machine with big memory is good. but don't assume that everything will be used automatically. the jvm doesn't automatically use all the resources in your memory when you start tomcat. you need to configure it. try to add something like this: *CATALINA_OPTS=-XX:MaxPermSize=512m * inside your catalina.sh (linux/unix) or catalina.bat (windows). you can put this as the first line (after the comments, for example). try to run again and see whether you still have the same error(s). PermGen space is the permanent generational heap for storing data such as class data. you will bump into this when deploying a large application or deploying repetitively. you will still get the exception when deploying often, only less frequent. --- daniel baktiar http://savinggaia.tritiumapps.com - saving the planet is everyone's business! 2010/11/22 xu cheng xcheng@gmail.com after tracing the app with jprofiler for several hours , I still cannot figure the problem. it seems that the app doesn't use a lot of memory. and it still run pretty well in my computer.and after it is deployed in the server, it crash the problem of the environment? but the tomcat on the server has been running for a really long time with out any problem what's the point?.oh no (°ο°） 2010/11/22 xu cheng xcheng@gmail.com by the way, it doesn't throws this exception while running on my computer it is only when the app is deploy on another computer that this problem occur 2010/11/22 xu cheng xcheng@gmail.com hi: thanks for replying the app is running on a powerful server and the memory is suppose to be enough I'll check if there is a memory leak,(althouth the app is suppose to use only a few memory) thanks 2010/11/22 Caldarale, Charles R chuck.caldar...@unisys.com From: xu cheng [mailto:xcheng@gmail.com] Subject: OutOfMemoryError some time on some tomcat1 the app works pretty well on my pc, and the tomcat is apache-tomcat-6.0.29 however , when I put this app on to another computer with the same tomcat it throws this exception Java HotSpot(TM) 64-Bit Server VM warning: Exception java.lang.OutOfMemoryError Exception in thread http-8080-24 java.lang.OutOfMemoryError: PermGen space 64-bit JVMs often require larger heap sizes than 32-bit ones. If the error occurs on the first deployment of the app, you may just need to configure a larger PermGen. However, if this error occurs only after redeploying your app some number of times, you likely have a memory leak. Use any of the widely available profilers or heap analysis tools to see just what is consuming memory. You can get some pointers here: http://wiki.apache.org/tomcat/FAQ/Memory - 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: OutOfMemoryError some time on some tomcat!!!!1
hi Daniel thanks alot for replying. I don't know how to figure out how much the param MaxPermSize is set to. may be it's set to be default. I just set the xmx and xms, so I thought that the memory will absolutely enough, I didn't notice this param, my fault. I did an experiment on tomcat , I just kept redeploying apps , and the perm gen keep growing each time I deploy the same app. and when I undeploy the app, the perm gen didn't clean the garbage ( I think they are garbage, but I don't know whether the vm can figure it out, I monitor this with the jconsole in the jdk/bin). in the meanwhile , the code cache in the memory pool and the loaded classes grow with the same curve like the permanent generation. the unused class meta data wasn't cleaned up during each deployment. I always redeploy the apps with shutting down the server, I think that might be the point. by the way , this aritical help me a lot to understand it. http://blogs.sun.com/jonthecollector/entry/presenting_the_permanent_generation thanks again for helping 2010/11/23 Daniel Baktiar dbakt...@gmail.com hi xu cheng, having a powerful machine with big memory is good. but don't assume that everything will be used automatically. the jvm doesn't automatically use all the resources in your memory when you start tomcat. you need to configure it. try to add something like this: *CATALINA_OPTS=-XX:MaxPermSize=512m * inside your catalina.sh (linux/unix) or catalina.bat (windows). you can put this as the first line (after the comments, for example). try to run again and see whether you still have the same error(s). PermGen space is the permanent generational heap for storing data such as class data. you will bump into this when deploying a large application or deploying repetitively. you will still get the exception when deploying often, only less frequent. --- daniel baktiar http://savinggaia.tritiumapps.com - saving the planet is everyone's business! 2010/11/22 xu cheng xcheng@gmail.com after tracing the app with jprofiler for several hours , I still cannot figure the problem. it seems that the app doesn't use a lot of memory. and it still run pretty well in my computer.and after it is deployed in the server, it crash the problem of the environment? but the tomcat on the server has been running for a really long time with out any problem what's the point?.oh no (°ο°） 2010/11/22 xu cheng xcheng@gmail.com by the way, it doesn't throws this exception while running on my computer it is only when the app is deploy on another computer that this problem occur 2010/11/22 xu cheng xcheng@gmail.com hi: thanks for replying the app is running on a powerful server and the memory is suppose to be enough I'll check if there is a memory leak,(althouth the app is suppose to use only a few memory) thanks 2010/11/22 Caldarale, Charles R chuck.caldar...@unisys.com From: xu cheng [mailto:xcheng@gmail.com] Subject: OutOfMemoryError some time on some tomcat1 the app works pretty well on my pc, and the tomcat is apache-tomcat-6.0.29 however , when I put this app on to another computer with the same tomcat it throws this exception Java HotSpot(TM) 64-Bit Server VM warning: Exception java.lang.OutOfMemoryError Exception in thread http-8080-24 java.lang.OutOfMemoryError: PermGen space 64-bit JVMs often require larger heap sizes than 32-bit ones. If the error occurs on the first deployment of the app, you may just need to configure a larger PermGen. However, if this error occurs only after redeploying your app some number of times, you likely have a memory leak. Use any of the widely available profilers or heap analysis tools to see just what is consuming memory. You can get some pointers here: http://wiki.apache.org/tomcat/FAQ/Memory - 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: OutOfMemoryError some time on some tomcat!!!!1
ps: after several times of redeployment, java.lang.OutOfMemoryError: PermGen space comes up. I always redeploy the apps *without* shutting down the server 在 2010年11月23日 下午1:50，xu cheng xcheng@gmail.com写道： hi Daniel thanks alot for replying. I don't know how to figure out how much the param MaxPermSize is set to. may be it's set to be default. I just set the xmx and xms, so I thought that the memory will absolutely enough, I didn't notice this param, my fault. I did an experiment on tomcat , I just kept redeploying apps , and the perm gen keep growing each time I deploy the same app. and when I undeploy the app, the perm gen didn't clean the garbage ( I think they are garbage, but I don't know whether the vm can figure it out, I monitor this with the jconsole in the jdk/bin). in the meanwhile , the code cache in the memory pool and the loaded classes grow with the same curve like the permanent generation. the unused class meta data wasn't cleaned up during each deployment. I always redeploy the apps with shutting down the server, I think that might be the point. by the way , this aritical help me a lot to understand it. http://blogs.sun.com/jonthecollector/entry/presenting_the_permanent_generation thanks again for helping 2010/11/23 Daniel Baktiar dbakt...@gmail.com hi xu cheng, having a powerful machine with big memory is good. but don't assume that everything will be used automatically. the jvm doesn't automatically use all the resources in your memory when you start tomcat. you need to configure it. try to add something like this: *CATALINA_OPTS=-XX:MaxPermSize=512m * inside your catalina.sh (linux/unix) or catalina.bat (windows). you can put this as the first line (after the comments, for example). try to run again and see whether you still have the same error(s). PermGen space is the permanent generational heap for storing data such as class data. you will bump into this when deploying a large application or deploying repetitively. you will still get the exception when deploying often, only less frequent. --- daniel baktiar http://savinggaia.tritiumapps.com - saving the planet is everyone's business! 2010/11/22 xu cheng xcheng@gmail.com after tracing the app with jprofiler for several hours , I still cannot figure the problem. it seems that the app doesn't use a lot of memory. and it still run pretty well in my computer.and after it is deployed in the server, it crash the problem of the environment? but the tomcat on the server has been running for a really long time with out any problem what's the point?.oh no (°ο°） 2010/11/22 xu cheng xcheng@gmail.com by the way, it doesn't throws this exception while running on my computer it is only when the app is deploy on another computer that this problem occur 2010/11/22 xu cheng xcheng@gmail.com hi: thanks for replying the app is running on a powerful server and the memory is suppose to be enough I'll check if there is a memory leak,(althouth the app is suppose to use only a few memory) thanks 2010/11/22 Caldarale, Charles R chuck.caldar...@unisys.com From: xu cheng [mailto:xcheng@gmail.com] Subject: OutOfMemoryError some time on some tomcat1 the app works pretty well on my pc, and the tomcat is apache-tomcat-6.0.29 however , when I put this app on to another computer with the same tomcat it throws this exception Java HotSpot(TM) 64-Bit Server VM warning: Exception java.lang.OutOfMemoryError Exception in thread http-8080-24 java.lang.OutOfMemoryError: PermGen space 64-bit JVMs often require larger heap sizes than 32-bit ones. If the error occurs on the first deployment of the app, you may just need to configure a larger PermGen. However, if this error occurs only after redeploying your app some number of times, you likely have a memory leak. Use any of the widely available profilers or heap analysis tools to see just what is consuming memory. You can get some pointers here: http://wiki.apache.org/tomcat/FAQ/Memory - 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: OutOfMemoryError some time on some tomcat!!!!1
hi xu cheng, don't mention it. glad you've eventually solved your problem. daniel --- daniel baktiar http://savinggaia.tritiumapps.com - saving the planet is everyone's business! 2010/11/23 xu cheng xcheng@gmail.com hi Daniel thanks alot for replying. I don't know how to figure out how much the param MaxPermSize is set to. may be it's set to be default. I just set the xmx and xms, so I thought that the memory will absolutely enough, I didn't notice this param, my fault. I did an experiment on tomcat , I just kept redeploying apps , and the perm gen keep growing each time I deploy the same app. and when I undeploy the app, the perm gen didn't clean the garbage ( I think they are garbage, but I don't know whether the vm can figure it out, I monitor this with the jconsole in the jdk/bin). in the meanwhile , the code cache in the memory pool and the loaded classes grow with the same curve like the permanent generation. the unused class meta data wasn't cleaned up during each deployment. I always redeploy the apps with shutting down the server, I think that might be the point. by the way , this aritical help me a lot to understand it. http://blogs.sun.com/jonthecollector/entry/presenting_the_permanent_generation thanks again for helping 2010/11/23 Daniel Baktiar dbakt...@gmail.com hi xu cheng, having a powerful machine with big memory is good. but don't assume that everything will be used automatically. the jvm doesn't automatically use all the resources in your memory when you start tomcat. you need to configure it. try to add something like this: *CATALINA_OPTS=-XX:MaxPermSize=512m * inside your catalina.sh (linux/unix) or catalina.bat (windows). you can put this as the first line (after the comments, for example). try to run again and see whether you still have the same error(s). PermGen space is the permanent generational heap for storing data such as class data. you will bump into this when deploying a large application or deploying repetitively. you will still get the exception when deploying often, only less frequent. --- daniel baktiar http://savinggaia.tritiumapps.com - saving the planet is everyone's business!
RE: OutOfMemoryError some time on some tomcat!!!!1
From: xu cheng [mailto:xcheng@gmail.com] Subject: Re: OutOfMemoryError some time on some tomcat1 I just kept redeploying apps , and the perm gen keep growing each time I deploy the same app. and when I undeploy the app, the perm gen didn't clean the garbage Exactly the situation I suggested the other day: you have something that's hanging onto a reference to an object from your webapp classes, preventing the old webapp deployment from being garbage collected. Again, read this: http://wiki.apache.org/tomcat/FAQ/Memory Also, take a look at these: http://blogs.sun.com/fkieviet/entry/classloader_leaks_the_dreaded_java http://blogs.sun.com/fkieviet/entry/how_to_fix_the_dreaded - 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: OutOfMemoryError some time on some tomcat!!!!1
hi: thanks for the references. I 'll read that. by the way, *hanging onto a reference to an object from your webapp classes, preventing the old webapp deployment from being garbage collected. * what kind of object do you mean by saying this? classes relevant to the class loader? or something else? for example? thanks 2010/11/23 Caldarale, Charles R chuck.caldar...@unisys.com From: xu cheng [mailto:xcheng@gmail.com] Subject: Re: OutOfMemoryError some time on some tomcat1 I just kept redeploying apps , and the perm gen keep growing each time I deploy the same app. and when I undeploy the app, the perm gen didn't clean the garbage Exactly the situation I suggested the other day: you have something that's hanging onto a reference to an object from your webapp classes, preventing the old webapp deployment from being garbage collected. Again, read this: http://wiki.apache.org/tomcat/FAQ/Memory Also, take a look at these: http://blogs.sun.com/fkieviet/entry/classloader_leaks_the_dreaded_java http://blogs.sun.com/fkieviet/entry/how_to_fix_the_dreaded - 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: OutOfMemoryError some time on some tomcat!!!!1
hi charles, please allow me to disagree to that hanging onto reference as the main issue. permgen space is garbage collector's specific issue, not general hanging onto reference issue. it is caused by redeployment, which is the metadata for classes, marked to be permanent generation by the hotspot garbage collector. when you deploy new classes, the class loader will introduce memory usages that will also marked as permanent generation. permgen is oracle hotspot specific implementation issue. you won't get it when you run on oracle jrockit (which performs just in time compilation), for example. --- daniel baktiar http://savinggaia.tritiumapps.com - saving the planet is everyone's business! On 23 November 2010 14:10, Caldarale, Charles R chuck.caldar...@unisys.comwrote: From: xu cheng [mailto:xcheng@gmail.com] Subject: Re: OutOfMemoryError some time on some tomcat1 I just kept redeploying apps , and the perm gen keep growing each time I deploy the same app. and when I undeploy the app, the perm gen didn't clean the garbage Exactly the situation I suggested the other day: you have something that's hanging onto a reference to an object from your webapp classes, preventing the old webapp deployment from being garbage collected. Again, read this: http://wiki.apache.org/tomcat/FAQ/Memory Also, take a look at these: http://blogs.sun.com/fkieviet/entry/classloader_leaks_the_dreaded_java http://blogs.sun.com/fkieviet/entry/how_to_fix_the_dreaded - 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.
Re: How to access JSP and Servlet remotely ?
even im facing same problem. i need to run jsp file from another system. -- View this message in context: http://old.nabble.com/How-to-access-JSP-and-Servlet-remotely---tp20558511p30283777.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
