Tomcat啟動時報開啟的檔案過多（Too many open files）
阿新 • • 發佈：2019-01-21
現在是北京時間20：30，本來5點就可以下班的，正常情況是4點下班。一直在修改緊急BUG。在最終要完成終於可以鬆一口氣的時候，釋出程式Tomcat突然拋了一個開啟的檔案過多，由於經驗淺薄，頓時就懵逼了。在解決問題後，決定寫下這篇部落格，記錄解決問題的經過。
日誌如下：
2017-01-04 19:50:16.386 DEBUG [] [] org.apache.ibatis.logging.LogFactory - Logging initialized using 'class org.apache.ibatis.logging.slf4j.Slf4jImpl' adapter. 04-Jan-2017 19:50:16.711 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file 04-Jan-2017 19:50:21.717 INFO [localhost-startStop-1] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [5,002] milliseconds. 04-Jan-2017 19:50:21.718 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal Context [/jbotm] startup failed due to previous errors 04-Jan-2017 19:50:21.729 WARNING [localhost-startStop-1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [jbotm] appears to have started a thread named [SeedGenerator Thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: sun.security.provider.SeedGenerator$ThreadedSeedGenerator.run(SeedGenerator.java:362) java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.730 WARNING [localhost-startStop-1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [jbotm] appears to have started a thread named [SeedGenerator Thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: java.lang.Thread.sleep(Native Method) sun.security.provider.SeedGenerator$ThreadedSeedGenerator$BogusThread.run(SeedGenerator.java:475) java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.736 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive /u01/app/apache-tomcat-8.0.36/webapps/jbotm.war has finished in 18,067 ms 04-Jan-2017 19:50:21.737 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /u01/app/apache-tomcat-8.0.36/webapps/examples 04-Jan-2017 19:50:21.738 SEVERE [localhost-startStop-1] org.apache.catalina.startup.ContextConfig.processContextConfig Missing context.xml: file:/u01/app/apache-tomcat-8.0.36/conf/context.xml java.io.FileNotFoundException: /u01/app/apache-tomcat-8.0.36/conf/context.xml (開啟的檔案過多) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(FileInputStream.java:195) at java.io.FileInputStream.<init>(FileInputStream.java:138) at java.io.FileInputStream.<init>(FileInputStream.java:93) at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:90) at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:188) at org.apache.catalina.startup.ContextConfig.processContextConfig(ContextConfig.java:524) at org.apache.catalina.startup.ContextConfig.contextConfig(ContextConfig.java:482) at org.apache.catalina.startup.ContextConfig.init(ContextConfig.java:739) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:317) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:394) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:110) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:136) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.739 SEVERE [localhost-startStop-1] org.apache.catalina.startup.ContextConfig.processContextConfig Parse error in context.xml for /examples java.io.FileNotFoundException: /u01/app/apache-tomcat-8.0.36/conf/context.xml (開啟的檔案過多) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(FileInputStream.java:195) at java.io.FileInputStream.<init>(FileInputStream.java:138) at java.io.FileInputStream.<init>(FileInputStream.java:93) at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:90) at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:188) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:623) at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:189) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:812) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213) at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643) at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1451) at org.apache.catalina.startup.ContextConfig.processContextConfig(ContextConfig.java:542) at org.apache.catalina.startup.ContextConfig.contextConfig(ContextConfig.java:482) at org.apache.catalina.startup.ContextConfig.init(ContextConfig.java:739) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:317) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:394) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:110) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:136) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.743 SEVERE [localhost-startStop-1] org.apache.catalina.startup.ContextConfig.getWebXmlSource Error processed default web.xml named conf/web.xml at /u01/app/apache-tomcat-8.0.36/conf/web.xml java.io.FileNotFoundException: /u01/app/apache-tomcat-8.0.36/conf/web.xml (開啟的檔案過多) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(FileInputStream.java:195) at java.io.FileInputStream.<init>(FileInputStream.java:138) at org.apache.catalina.startup.ContextConfig.getWebXmlSource(ContextConfig.java:1837) at org.apache.catalina.startup.ContextConfig.getGlobalWebXmlSource(ContextConfig.java:1735) at org.apache.catalina.startup.ContextConfig.getDefaultWebXmlFragment(ContextConfig.java:1460) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1109) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:779) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:306) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5202) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.745 SEVERE [localhost-startStop-1] org.apache.tomcat.util.descriptor.web.WebXmlParser.parseWebXml Parse error in application web.xml file at file:/u01/app/apache-tomcat-8.0.36/conf/web.xml java.io.FileNotFoundException: /u01/app/apache-tomcat-8.0.36/conf/web.xml (開啟的檔案過多) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(FileInputStream.java:195) at java.io.FileInputStream.<init>(FileInputStream.java:138) at java.io.FileInputStream.<init>(FileInputStream.java:93) at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:90) at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:188) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:623) at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:189) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:812) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213) at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643) at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1451) at org.apache.tomcat.util.descriptor.web.WebXmlParser.parseWebXml(WebXmlParser.java:120) at org.apache.catalina.startup.ContextConfig.getDefaultWebXmlFragment(ContextConfig.java:1536) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1109) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:779) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:306) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5202) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.746 SEVERE [localhost-startStop-1] org.apache.catalina.startup.ContextConfig.configureStart Marking this application unavailable due to previous error(s) 04-Jan-2017 19:50:21.747 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal One or more components marked the context as not correctly configured 04-Jan-2017 19:50:21.747 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal Context [/examples] startup failed due to previous errors 04-Jan-2017 19:50:21.749 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /u01/app/apache-tomcat-8.0.36/webapps/examples has finished in 12 ms 04-Jan-2017 19:50:21.749 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /u01/app/apache-tomcat-8.0.36/webapps/manager 04-Jan-2017 19:50:21.750 SEVERE [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Error deploying configuration descriptor /u01/app/apache-tomcat-8.0.36/webapps/manager/META-INF/context.xml java.io.FileNotFoundException: /u01/app/apache-tomcat-8.0.36/webapps/manager/META-INF/context.xml (開啟的檔案過多) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(FileInputStream.java:195) at java.io.FileInputStream.<init>(FileInputStream.java:138) at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1433) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1048) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.762 SEVERE [localhost-startStop-1] org.apache.catalina.startup.ContextConfig.processContextConfig Missing context.xml: file:/u01/app/apache-tomcat-8.0.36/webapps/manager/META-INF/context.xml java.io.FileNotFoundException: /u01/app/apache-tomcat-8.0.36/webapps/manager/META-INF/context.xml (開啟的檔案過多) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(FileInputStream.java:195) at java.io.FileInputStream.<init>(FileInputStream.java:138) at java.io.FileInputStream.<init>(FileInputStream.java:93) at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:90) at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:188) at org.apache.catalina.startup.ContextConfig.processContextConfig(ContextConfig.java:524) at org.apache.catalina.startup.ContextConfig.contextConfig(ContextConfig.java:501) at org.apache.catalina.startup.ContextConfig.init(ContextConfig.java:739) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:317) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:394) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:110) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:136) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.762 SEVERE [localhost-startStop-1] org.apache.catalina.startup.ContextConfig.processContextConfig Parse error in context.xml for /manager java.io.FileNotFoundException: /u01/app/apache-tomcat-8.0.36/webapps/manager/META-INF/context.xml (開啟的檔案過多) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(FileInputStream.java:195) at java.io.FileInputStream.<init>(FileInputStream.java:138) at java.io.FileInputStream.<init>(FileInputStream.java:93) at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:90) at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:188) at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:623) at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:189) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:812) at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777) at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141) at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213) at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643) at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1451) at org.apache.catalina.startup.ContextConfig.processContextConfig(ContextConfig.java:542) at org.apache.catalina.startup.ContextConfig.contextConfig(ContextConfig.java:501) at org.apache.catalina.startup.ContextConfig.init(ContextConfig.java:739) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:317) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:394) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:110) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:136) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.764 SEVERE [localhost-startStop-1] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [/manager] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:153) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.catalina.LifecycleException: Failed to process either the global, per-host or context-specific context.xml file therefore the [/manager] Context cannot be started. at org.apache.catalina.startup.FailedContext.startInternal(FailedContext.java:199) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) ... 10 more 04-Jan-2017 19:50:21.766 SEVERE [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Error deploying web application directory /u01/app/apache-tomcat-8.0.36/webapps/manager java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [/manager] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:729) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) 04-Jan-2017 19:50:21.766 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /u01/app/apache-tomcat-8.0.36/webapps/manager has finished in 17 ms 04-Jan-2017 19:50:21.766 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /u01/app/apache-tomcat-8.0.36/webapps/docs 04-Jan-2017 19:50:21.767 SEVERE [localhost-startStop-1] org.apache.catalina.startup.ContextConfig.processContextConfig Missing context.xml: file:/u01/app/apache-tomcat-8.0.36/conf/context.xml java.io.FileNotFoundException: /u01/app/apache-tomcat-8.0.36/conf/context.xml (開啟的檔案過多) at java.io.FileInputStream.open0(Native Method) at java.io.FileInputStream.open(FileInputStream.java:195) at java.io.FileInputStream.<init>(FileInputStream.java:138) at java.io.FileInputStream.<init>(FileInputStream.java:93) at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:90) at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:188) at org.apache.catalina.startup.ContextConfig.processContextConfig(ContextConfig.java:524) at org.apache.catalina.startup.ContextConfig.contextConfig(ContextConfig.java:482) at org.apache.catalina.startup.ContextConfig.init(ContextConfig.java:739) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:317) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:394) at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:110) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:136) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092) at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)
是Linux作業系統的開啟檔案數太小造成的:
ulimit -a 檢視當前系統的最大檔案開啟數
也可以直接： ulimit -n 顯示系統開啟檔案數
設定檔案數： ulimit -n 65535 檔案數65535根據自身條件設定
再用ulimit -n 檢視的時候顯示已經修改成功。
這時在啟動Tomcat就一切OK了
一個可以互相學習、閒聊、一起成長的技術群：307360805
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Tomcat啟動時報開啟的檔案過多（Too many open files）
現在是北京時間20：30，本來5點就可以下班的，正常情況是4點下班。一直在修改緊急BUG。在最終要完成終於可以鬆一口氣的時候，釋出程式Tomcat突然拋了一個開啟的檔案過多，由於經驗淺薄，頓時就懵逼了。在解決問題後，決定寫下這篇部落格，記錄解決問題的經過。 日誌如下：
【Linux】解決tomcat出現Too many open files（開啟的檔案過多）問題
當用linux做高併發伺服器時，會遇到"Too many open files"的錯誤。Linux是有檔案控制代碼限制的（open files），而且Linux預設不是很高，一般都是1024，做高併發生產伺服器用其實很容易就達到這個數量。在linux中執行ulimit -a
Linux 檔案開啟過多 (Too many open files)
如圖是程式運行了一段時間後丟擲來的一個bug, 剛開始看這個bug的時候各種網上找答案, 無外乎教你怎麼改ulimit(就是linux最大開啟檔案數), 當然不是說改這個沒有用, 作為程式開發者來說, 如果程式執行出現了bug則必然是程式的問題
mina通訊，對於高併發的產生：java.io.IOException: Too many open files(開啟檔案控制代碼過多問題)
起因：由於業務系統有多個定時任務定時訪問銀行端，銀行每天也有大量業務訪問業務系統，都是通過mina通訊，部署在測試環境的系統每過一兩天開啟控制代碼過萬，生產的也是一週左右不重啟業務系統就會爆掉。一開始並不清楚到底是哪方面原因導致控制代碼增長這麼快，因為這是一個老系統，經過多次升級，大量的併發、多執行緒，所以只
解決tomcat too many open files問題
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linux下tomcat之too many open files
設置 inux roc spa ava linux 執行 java 使用命令 一、問題表象： 程序日誌報錯：java.io.IOException: Too many open files at 二、解決方案： 1、查看系統允許打開的最大文件數: ca
【效能優化】tomcat & Redis 優化：關於 too many open files error
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Linux下tomcat報錯“java.net.SocketException: Too many open files”--MINA2 錯誤解決
轉載： 因為這個問題，我也是經過三次修改後，才徹底解決該問題。我是遇到了錯誤資訊：“Too many open files”和“No buffer space availabel”，從我的專案上看，兩個問題都是因為使用MINA2時，有些資源沒有關閉造成的。但是出現“To
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高並發連接導致打開文件過多：java.io.IOException: Too many open files 解決方法
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too many open files錯誤
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too many open files linux服務器 golang java
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Linux允許打開最大文件句柄數的參數調優-"too many open files"問題
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某臺tablet server 在停機一斷時間後，再次啟動，某些tablet server出現異常退出，檢視日誌報錯： 開啟資料檔案 報”Too many open files ” 錯誤。 該錯誤明顯開啟的檔案控制代碼數，超過系統設定的ulimit數。 ulim
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too many open files問題解決辦法
今天用程式碼往liunx中寫檔案，檔案很多程式碼執行一會就日誌上就報錯：“too many open files”。結果找了半天才解決這個問題，現在給大家分享一下。 首先用“ulimit -a”命令看看linux的open files值是多少，結果一隻有1024，不夠用的。然後修改linux