公司内网测试jenkins服务器，最近总是出现PermGen space（内存溢出）的问题，解决过程记录如下

1、重启jenkins查看日志：

3, 2017 10:54:54 udson.ExtensionFinder$Sezpoz _find
WARNING: Failed to load org.jenkinsci.plugins.github.pullrequest.events.impl.GitHubPRLabelExistsEvent$DescriptorImpl
java.lang.InstantiationException: java.lang.UnsupportedClassVersionError: org/jenkinsci/plugins/github/pullrequest/events/impl/GitHubPRLabelExistsEvent$DescriptorImpl : Unsupported major.minor ve
rsion 52.0at net.java.sezpoz.IndexItem.element(IndexItem.java:146)at hudson.ExtensionFinder$Sezpoz._find(ExtensionFinder.java:620)at hudson.ExtensionFinder$Sezpoz.find(ExtensionFinder.java:609)at hudson.ExtensionFinder$GuiceFinder.<init>(ExtensionFinder.java:257)at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)at java.lang.reflect.Constructor.newInstance(Constructor.java:526)at java.lang.Class.newInstance(Class.java:374)at net.java.sezpoz.IndexItem.instance(IndexItem.java:181)at hudson.ExtensionFinder$Sezpoz._find(ExtensionFinder.java:634)at hudson.ExtensionFinder$Sezpoz.find(ExtensionFinder.java:609)at hudson.ClassicPluginStrategy.findComponents(ClassicPluginStrategy.java:471)at hudson.ExtensionList.load(ExtensionList.java:349)at hudson.ExtensionList.ensureLoaded(ExtensionList.java:287)at hudson.ExtensionList.getComponents(ExtensionList.java:167)at jenkins.model.Jenkins$8.onInitMilestoneAttained(Jenkins.java:1016)at jenkins.InitReactorRunner$1.onAttained(InitReactorRunner.java:80)at org.jvnet.hudson.reactor.ReactorListener$Aggregator.onAttained(ReactorListener.java:104)at org.jvnet.hudson.reactor.Reactor$1.run(Reactor.java:176)at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.UnsupportedClassVersionError: org/jenkinsci/plugins/github/pullrequest/events/impl/GitHubPRLabelExistsEvent$DescriptorImpl : Unsupported major.minor version 52.0at java.lang.ClassLoader.defineClass1(Native Method)at java.lang.ClassLoader.defineClass(ClassLoader.java:800)at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1139)at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:878)at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1310)at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1366)at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326)at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:606)at jenkins.ClassLoaderReflectionToolkit.invoke(ClassLoaderReflectionToolkit.java:44)at jenkins.ClassLoaderReflectionToolkit._findClass(ClassLoaderReflectionToolkit.java:81)at hudson.PluginManager$UberClassLoader.findClass(PluginManager.java:1738)at java.lang.ClassLoader.loadClass(ClassLoader.java:425)at java.lang.ClassLoader.loadClass(ClassLoader.java:358)at net.java.sezpoz.IndexItem.element(IndexItem.java:134)

发现了大量的有关github-pullrequest插件版本的报错，怀疑是因为插件版本问题导致的，于是乎卸载了这个插件。重启jenkins

问题依旧，启动日志报大量的这个插件的问题，然后各种百度没有找到解决方案，仔细查看日志的报错位置，然后使用find在系统中搜索插件的名字

[root@phtfdata20 ~]# find / -name github
/root/.jenkins/plugins/github
/root/.jenkins/plugins/github/META-INF/maven/com.coravy.hudson.plugins.github/github
/root/.m2/repository/com/github

然后进入到jenkins的主目录的plugins目录中，删除pull-requests目录和pull-requests.jpi 文件，重启jenkins，问题解决。

这次虽然不报版本错误了，但是在执行jenkins构建时，还是会出现内存溢出现象。经过观察发现，内存溢出一定是多次构建失败才会出现。日志报错：

INFO: XXXXXXXXXXX #14 main build action completed: FAILURE
3, 2017 11:04:15 udson.model.Run execute
INFO: XXXXXXXXXXX #13 main build action completed: FAILURE
3, 2017 11:05:05 udson.model.Run execute
INFO: XXXXXXXXXXX #5 main build action completed: SUCCESS
3, 2017 11:06:38 udson.model.Run execute
INFO: XXXXXXXXXXX #15 main build action completed: FAILURE
3, 2017 11:13:45 udson.model.Run execute
INFO: XXXXXXXXXXX #16 main build action completed: FAILURE
3, 2017 11:26:20 udson.model.Run execute
INFO: XXXXXXXXXXX #17 main build action completed: FAILURE
3, 2017 11:28:23 udson.ExpressionFactory2$JexlExpression evaluate
WARNING: Caught exception evaluating: instance[name] ?: attrs.default in /jenkins/configure. Reason: java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetExceptionat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:606)at org.apache.commons.jexl.util.PropertyExecutor.execute(PropertyExecutor.java:125)at org.apache.commons.jexl.util.introspection.UberspectImpl$VelGetterImpl.invoke(UberspectImpl.java:314)at org.apache.commons.jexl.parser.ASTArrayAccess.evaluateExpr(ASTArrayAccess.java:185)at org.apache.commons.jexl.parser.ASTArrayAccess.value(ASTArrayAccess.java:118)at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:77)at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:57)at org.apache.commons.jexl.parser.ASTElvisNode.value(ASTElvisNode.java:37)at org.apache.commons.jexl.parser.ASTExpression.value(ASTExpression.java:54)at org.apache.commons.jexl.parser.ASTExpressionExpression.value(ASTExpressionExpression.java:56)at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:80)at hudson.ExpressionFactory2$JexlExpression.evaluate(ExpressionFactory2.java:74)at org.apache.commons.jelly.tags.core.CoreTagLibrary$3.run(CoreTagLibrary.java:134)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:46)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:46)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)at org.kohsuke.stapler.jelly.IncludeTag.doTag(IncludeTag.java:147)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.OtherwiseTag.doTag(OtherwiseTag.java:41)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.ForEachTag.doTag(ForEachTag.java:150)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$1.run(CoreTagLibrary.java:98)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.JellyViewScript.run(JellyViewScript.java:95)at org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:63)at org.kohsuke.stapler.jelly.DefaultScriptInvoker.invokeScript(DefaultScriptInvoker.java:53)at org.kohsuke.stapler.jelly.JellyFacet$1.dispatch(JellyFacet.java:95)at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)at org.kohsuke.stapler.Stapler.service(Stapler.java:238)at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:135)at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:126)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:49)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)at jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117)at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:93)at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:67)at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:612)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.OutOfMemoryError: PermGen spaceat java.lang.ClassLoader.defineClass1(Native Method)at java.lang.ClassLoader.defineClass(ClassLoader.java:800)at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1139)at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:878)at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1310)at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1366)at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326)at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1079)at java.lang.ClassLoader.loadClass(ClassLoader.java:358)at org.skife.jdbi.v2.sqlobject.SqlObject.<clinit>(SqlObject.java:38)at org.skife.jdbi.v2.sqlobject.SqlObjectBuilder.attach(SqlObjectBuilder.java:38)at org.skife.jdbi.v2.BasicHandle.attach(BasicHandle.java:408)at com.epam.jenkins.deployment.sphere.plugin.metadata.persistence.dao.ApplicationDao.findAll(ApplicationDao.java:38)at com.epam.jenkins.deployment.sphere.plugin.GlobalJobProperty$CustomViewsTabBarDescriptor.getApplications(GlobalJobProperty.java:69)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:606)at org.apache.commons.jexl.util.PropertyExecutor.execute(PropertyExecutor.java:125)at org.apache.commons.jexl.util.introspection.UberspectImpl$VelGetterImpl.invoke(UberspectImpl.java:314)at org.apache.commons.jexl.parser.ASTArrayAccess.evaluateExpr(ASTArrayAccess.java:185)at org.apache.commons.jexl.parser.ASTArrayAccess.value(ASTArrayAccess.java:118)at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:77)at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:57)at org.apache.commons.jexl.parser.ASTElvisNode.value(ASTElvisNode.java:37)at org.apache.commons.jexl.parser.ASTExpression.value(ASTExpression.java:54)at org.apache.commons.jexl.parser.ASTExpressionExpression.value(ASTExpressionExpression.java:56)at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:80)at hudson.ExpressionFactory2$JexlExpression.evaluate(ExpressionFactory2.java:74)at org.apache.commons.jelly.tags.core.CoreTagLibrary$3.run(CoreTagLibrary.java:134)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)3, 2017 11:28:25 udson.ExpressionFactory2$JexlExpression evaluate
WARNING: Caught exception evaluating: instance[name] ?: attrs.default in /jenkins/configure. Reason: java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetExceptionat sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:606)at org.apache.commons.jexl.util.PropertyExecutor.execute(PropertyExecutor.java:125)at org.apache.commons.jexl.util.introspection.UberspectImpl$VelGetterImpl.invoke(UberspectImpl.java:314)at org.apache.commons.jexl.parser.ASTArrayAccess.evaluateExpr(ASTArrayAccess.java:185)at org.apache.commons.jexl.parser.ASTArrayAccess.value(ASTArrayAccess.java:118)at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:77)at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:57)at org.apache.commons.jexl.parser.ASTElvisNode.value(ASTElvisNode.java:37)at org.apache.commons.jexl.parser.ASTExpression.value(ASTExpression.java:54)at org.apache.commons.jexl.parser.ASTExpressionExpression.value(ASTExpressionExpression.java:56)at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:80)at hudson.ExpressionFactory2$JexlExpression.evaluate(ExpressionFactory2.java:74)at org.apache.commons.jelly.tags.core.CoreTagLibrary$3.run(CoreTagLibrary.java:134)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:46)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)at org.kohsuke.stapler.jelly.CallTagLibScript.run(CallTagLibScript.java:120)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99)at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:46)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161)at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269)at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)at org.apache.commons.jelly.tags.core.CoreTagLibrary$2.run(CoreTagLibrary.java:105)

2、查看系统状态

发现jenkins的进程占用内存大，系统负载高。

3、对jenkins进行调优

catalina.sh加入参数

JAVA_OPTS="-server -Xms1024m -Xmx2048m -XX:PermSize=256m -XX:MaxPermSize=512m"

重启jenkins之后观察内存溢出问题依旧

4、将外网测试的jenkins取项目取到内网服务器上，启动jenkins，观察2个小时，内存溢出问题解决。

总结：外网测试的jenkins版本和内网的一样，所以目前也不清楚到底是什么原因导致的内存溢出。百度之后的结果也不尽人意。。。