Hi Jenkins is crashing on me several times a day. I am running Jenkins 1.552 on Centos 5, in a VM. Jenkins used to be stable for us. The only symptom I see is that my browser shows:
"An internal server error occurred. Please try again later." I don't know where to start debugging this. The Jenkins system log has several severe errors/warnings: Mar 27, 2014 10:13:32 AM SEVERE jenkins.InitReactorRunner$1 onTaskFailed Failed Inspecting plugin /var/lib/jenkins/plugins/uploaded2537880836547508584.jpi java.io.IOException: Failed to expand /var/lib/jenkins/plugins/uploaded2537880836547508584.jpi at hudson.ClassicPluginStrategy.explode(ClassicPluginStrategy.java:430) at hudson.ClassicPluginStrategy.createPluginWrapper(ClassicPluginStrategy.java:128) at hudson.PluginManager$1$3$1.run(PluginManager.java:237) at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169) at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282) at jenkins.model.Jenkins$7.runTask(Jenkins.java:899) at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210) at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) and: Mar 27, 2014 10:13:35 AM WARNING hudson.ExtensionFinder$Sezpoz scout Failed to scout hudson.maven.MavenModuleSet java.lang.NoClassDefFoundError: hudson/tasks/JavadocArchiver at hudson.maven.MavenModuleSet$DescriptorImpl.<clinit>(MavenModuleSet.java:1322) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at hudson.ExtensionFinder$Sezpoz.scout(ExtensionFinder.java:680) at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:311) at hudson.ExtensionList.load(ExtensionList.java:295) at hudson.ExtensionList.ensureLoaded(ExtensionList.java:248) at hudson.ExtensionList.iterator(ExtensionList.java:138) at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:310) at hudson.ExtensionList.load(ExtensionList.java:295) at hudson.ExtensionList.ensureLoaded(ExtensionList.java:248) at hudson.ExtensionList.iterator(ExtensionList.java:138) at jenkins.metrics.api.Metrics.postInitialize(Metrics.java:286) at hudson.PluginManager$2$1$2.run(PluginManager.java:373) at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169) at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282) at jenkins.model.Jenkins$7.runTask(Jenkins.java:899) at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210) at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.ClassNotFoundException: hudson.tasks.JavadocArchive Any suggestions what I should do please? Best regards David -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.