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user236980
Asked:2020-09-10 15:07:16 +0000 UTC2020-09-10 15:07:16 +0000 UTC

重新启动 Tomcat 服务器后，应用程序在重新部署之前不会启动

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CentOS应用服务器安装在北方Tomcat。它将项目部署在根文件夹webapps/ROOT中，如下所述：Tomcat 9 deploy into ROOT

服务器物理重启后，服务启动Tomcat，但根文件夹中的应用程序webapps/ROOT仍然无法访问。

如果您再次{name-of-the-app}.war将其复制到文件夹myapps中，则它Tomcat会再次展开存档，并且该应用程序变得可用。

据我了解，应用程序应该随着Tomcat-th 而上升，但由于某种原因，这不会发生。

我究竟做错了什么？

UPD： - 应用程序服务器日志

catalina.out - 服务器重启后

13-Sep-2018 22:09:11.152 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version:        Apache Tomcat/9.0.12
13-Sep-2018 22:09:11.155 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          Sep 4 2018 22:13:41 UTC
13-Sep-2018 22:09:11.155 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number:         9.0.12.0
13-Sep-2018 22:09:11.156 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Linux
13-Sep-2018 22:09:11.156 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            3.10.0-862.11.6.el7.x86_64
13-Sep-2018 22:09:11.156 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          amd64
13-Sep-2018 22:09:11.156 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             /usr/java/jdk1.8.0_181-amd64/jre
13-Sep-2018 22:09:11.156 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           1.8.0_181-b13
13-Sep-2018 22:09:11.156 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Oracle Corporation
13-Sep-2018 22:09:11.156 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         /opt/apache-tomcat-9.0.12
13-Sep-2018 22:09:11.156 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         /opt/apache-tomcat-9.0.12
13-Sep-2018 22:09:11.157 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties
13-Sep-2018 22:09:11.159 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
13-Sep-2018 22:09:11.159 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.library.path=/usr/local/apr/lib
13-Sep-2018 22:09:11.159 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
13-Sep-2018 22:09:11.159 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
13-Sep-2018 22:09:11.159 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
13-Sep-2018 22:09:11.159 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs=
13-Sep-2018 22:09:11.160 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/opt/tomcat
13-Sep-2018 22:09:11.160 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/opt/tomcat
13-Sep-2018 22:09:11.160 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/opt/tomcat/temp
13-Sep-2018 22:09:11.160 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library [1.2.17] using APR version [1.4.8].
13-Sep-2018 22:09:11.160 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
13-Sep-2018 22:09:11.160 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
13-Sep-2018 22:09:11.166 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized [OpenSSL 1.0.2k-fips  26 Jan 2017]
13-Sep-2018 22:09:11.338 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
13-Sep-2018 22:09:11.355 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
13-Sep-2018 22:09:11.367 INFO [main] org.apache.coyote.http11.AbstractHttp11Protocol.configureUpgradeProtocol The ["https-openssl-apr-8443"] connector has been configured to support negotiation to [h2] via ALPN
13-Sep-2018 22:09:11.367 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["https-openssl-apr-8443"]
13-Sep-2018 22:09:11.428 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"]
13-Sep-2018 22:09:11.429 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
13-Sep-2018 22:09:11.430 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 902 ms
13-Sep-2018 22:09:11.476 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
13-Sep-2018 22:09:11.477 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/9.0.12
13-Sep-2018 22:09:11.489 INFO [main] org.apache.catalina.startup.HostConfig.deployDescriptor Deploying deployment descriptor [/opt/apache-tomcat-9.0.12/conf/Catalina/localhost/ROOT.xml]
13-Sep-2018 22:09:11.517 WARNING [main] org.apache.catalina.startup.HostConfig.deployDescriptor The path attribute with value [] in deployment descriptor [/opt/apache-tomcat-9.0.12/conf/Catalina/localhost/ROOT.xml] has been ignored
13-Sep-2018 22:09:11.527 WARNING [main] org.apache.catalina.startup.HostConfig.deployDescriptor Deployment of deployment descriptor [/opt/apache-tomcat-9.0.12/conf/Catalina/localhost/ROOT.xml] with an external docBase means the directory [/opt/apache-tomcat-9.0.12/webapps/ROOT] in the appBase will be ignored
13-Sep-2018 22:09:12.431 INFO [main] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.

catalina.out - 重新部署后

13-Sep-2018 22:12:42.714 WARNING [main] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [210,235] milliseconds.
13-Sep-2018 22:12:42.786 INFO [main] org.apache.catalina.startup.HostConfig.deployDescriptor Deployment of deployment descriptor [/opt/apache-tomcat-9.0.12/conf/Catalina/localhost/ROOT.xml] has finished in [211,297] ms
13-Sep-2018 22:12:42.792 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
13-Sep-2018 22:12:42.804 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["https-openssl-apr-8443"]
13-Sep-2018 22:12:42.815 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
13-Sep-2018 22:12:42.825 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 211395 ms
13-Sep-2018 22:12:52.791 INFO [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.startup.HostConfig.reload Reloading context []
13-Sep-2018 22:12:52.794 INFO [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.core.StandardContext.reload Reloading Context with name [] has started
13-Sep-2018 22:12:53.966 INFO [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
13-Sep-2018 22:12:53.994 INFO [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.core.StandardContext.reload Reloading Context with name [] is completed
tomcat

1 个回答

  1. Best Answer

    事实证明，Tomcat它实际上启动并提出了应用程序，但它做得非常缓慢，而重新部署只是加速了这个过程。在某些情况下，Tomcat连同所有应用程序一起下载可能需要~17 分钟。

    该问题与生成.SecureRandomSHA1PRNG

    # Неочевидно, правда.. !! Но такое тоже бывает..

    解决方案：

    1. 打开文件 
      $JAVA_PATH/jre/lib/security/java.security
    2. 寻找一个字符串 
      securerandom.source=file:/dev/random
    3. 我们将其替换为行 
      securerandom.source=file:/dev/./urandom

    更详细的错误描述：“Tomcat7 在 Ubuntu 14.04 x64 上启动太晚”。

    • 5

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