Tomcat application server is installed on the north of CentOS . It will deploy the project in the webapps/ROOT root folder as described here: Tomcat 9 deploy into ROOT

After the server is physically rebooted, the Tomcat service rises, but the application in the webapps/ROOT root folder remains inaccessible.

If you re-copy {name-of-the-app}.war to the folder myapps , then Tomcat re-expands the archive, and the application becomes available.

As far as I understand, applications should go up with Tomcat , but for some reason this does not happen.

What am I doing wrong?

UPD: - Application server logs

catalina.out - after restarting the server

 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 - before the break

 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
  • Stop tomcat, clean the logs ( ${CATALINA_HOME}/logs folder) and then run it. New logs attach to the question. Otherwise it is very difficult for you to help. - Temka too
  • Added logs to catalina.out - Drakonoved

1 answer 1

As it turned out, Tomcat actually started up and raised the application, but did it very slowly, but before that it just accelerated this process. In some cases, downloading Tomcat along with all applications can take ~ 17 MINUTES

The issue is related to the JDK-4705093 error when generating SecureRandom for SHA1PRNG .

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

Decision:

  1. Open the file

     $JAVA_PATH/jre/lib/security/java.security

  2. Find the string

     securerandom.source=file:/dev/random

  3. Replace it with a string.

     securerandom.source=file:/dev/./urandom

Additionally:

A more detailed description of the error can be found here: Tomcat 7 starts too late on Ubuntu 14.04 x64 | stackoverflow.com