刚刚构建了一个新的 Tomcat 8 应用服务器 (digitalocean droplet)。它是 Ubuntu Server 16.04、openjdk 1.8.0_111、Tomcat 8.0.32 等。从官方 apt repos 安装。没什么特别的。
当我启动服务器时，它会卡在部署 ROOT 应用程序，并且需要 10 分钟才能启动！
INFO: Server startup in 604371 ms
我试过关闭autoDeploy它unpackWARs，但没什么效果。即便如此，也不应该花 10 分钟……
有人能说出那里发生了什么事吗？
谢谢彼得
Nov 22, 2016 4:55:22 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat8/common/classes], exists: [false], isDirectory: [false], canRead: [false]
Nov 22, 2016 4:55:22 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat8/common], exists: [false], isDirectory: [false], canRead: [false]
Nov 22, 2016 4:55:22 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat8/server/classes], exists: [false], isDirectory: [false], canRead: [false]
Nov 22, 2016 4:55:22 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat8/server], exists: [false], isDirectory: [false], canRead: [false]
Nov 22, 2016 4:55:22 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat8/shared/classes], exists: [false], isDirectory: [false], canRead: [false]
Nov 22, 2016 4:55:22 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat8/shared], exists: [false], isDirectory: [false], canRead: [false]
Nov 22, 2016 4:55:24 PM org.apache.catalina.core.StandardContext setPath
WARNING: A context path must either be an empty string or start with a '/' and do not end with a '/'. The path [/] does not meet these criteria and has been changed to []
Nov 22, 2016 4:55:24 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Valve} Setting property 'resolveHosts' to 'false' did not find a matching property.
Nov 22, 2016 4:55:24 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host} Setting property 'debug' to '0' did not find a matching property.
Nov 22, 2016 4:55:24 PM org.apache.catalina.core.StandardContext setPath
WARNING: A context path must either be an empty string or start with a '/' and do not end with a '/'. The path [/] does not meet these criteria and has been changed to []
Nov 22, 2016 4:55:24 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Valve} Setting property 'resolveHosts' to 'false' did not find a matching property.
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server version: Apache Tomcat/8.0.32 (Ubuntu)
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server built: Sep 16 2016 13:11:41 UTC
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Server number: 8.0.32.0
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Name: Linux
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: OS Version: 4.4.0-47-generic
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Architecture: amd64
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Java Home: /usr/lib/jvm/java-8-openjdk-amd64/jre
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Version: 1.8.0_111-8u111-b14-2ubuntu0.16.04.2-b14
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: JVM Vendor: Oracle Corporation
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_BASE: /var/lib/tomcat8
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: CATALINA_HOME: /usr/share/tomcat8
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.util.logging.config.file=/var/lib/tomcat8/conf/logging.properties
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.awt.headless=true
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Xmx128m
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -XX:+UseConcMarkSweepGC
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.endorsed.dirs=/usr/share/tomcat8/endorsed
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.base=/var/lib/tomcat8
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Dcatalina.home=/usr/share/tomcat8
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.VersionLoggerListener log
INFO: Command line argument: -Djava.io.tmpdir=/tmp/tomcat8-tomcat8-tmp
Nov 22, 2016 4:55:24 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-nio-8080"]
Nov 22, 2016 4:55:24 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFO: Using a shared selector for servlet write/read
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 2462 ms
Nov 22, 2016 4:55:24 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
Nov 22, 2016 4:55:24 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/8.0.32 (Ubuntu)
Nov 22, 2016 4:55:24 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory /var/lib/tomcat8/webapps/ROOT
Nov 22, 2016 5:05:22 PM org.apache.catalina.util.SessionIdGeneratorBase createSecureRandom
INFO: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [596,561] milliseconds.
Nov 22, 2016 5:05:22 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deployment of web application directory /var/lib/tomcat8/webapps/ROOT has finished in 597,690 ms
Nov 22, 2016 5:05:27 PM org.apache.tomcat.dbcp.dbcp2.BasicDataSourceFactory getObjectInstance
WARNING: Name = pcaucrdb Property maxActive is not used in DBCP2, use maxTotal instead. maxTotal default value is 8. You have set value of "50" for "maxActive" property, which is being ignored.
Nov 22, 2016 5:05:27 PM org.apache.tomcat.dbcp.dbcp2.BasicDataSourceFactory getObjectInstance
WARNING: Name = pcaucrdb Property removeAbandoned is not used in DBCP2, use one or both of removeAbandonedOnBorrow or removeAbandonedOnMaintenance instead. Both have default value set to false. You have set value of "true" for "removeAbandoned" property, which is being ignored.
Nov 22, 2016 5:05:27 PM org.apache.tomcat.dbcp.dbcp2.BasicDataSourceFactory getObjectInstance
WARNING: Name = pcaucrdb Property maxWait is not used in DBCP2 , use maxWaitMillis instead. maxWaitMillis default value is -1. You have set value of "10000" for "maxWait" property, which is being ignored.
Nov 22, 2016 5:05:28 PM org.apache.jasper.servlet.TldScanner scanJars
INFO: 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.
PCAUCR: Starting context: class util.ContextListener
Nov 22, 2016 5:05:28 PM org.apache.tomcat.dbcp.dbcp2.BasicDataSourceFactory getObjectInstance
WARNING: Name = applicensedb Property maxActive is not used in DBCP2, use maxTotal instead. maxTotal default value is 8. You have set value of "25" for "maxActive" property, which is being ignored.
Nov 22, 2016 5:05:28 PM org.apache.tomcat.dbcp.dbcp2.BasicDataSourceFactory getObjectInstance
WARNING: Name = applicensedb Property removeAbandoned is not used in DBCP2, use one or both of removeAbandonedOnBorrow or removeAbandonedOnMaintenance instead. Both have default value set to false. You have set value of "true" for "removeAbandoned" property, which is being ignored.
Nov 22, 2016 5:05:28 PM org.apache.tomcat.dbcp.dbcp2.BasicDataSourceFactory getObjectInstance
WARNING: Name = applicensedb Property maxWait is not used in DBCP2 , use maxWaitMillis instead. maxWaitMillis default value is -1. You have set value of "10000" for "maxWait" property, which is being ignored.
Nov 22, 2016 5:05:29 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-nio-8080"]
Nov 22, 2016 5:05:29 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 604371 ms
答案1
找到了答案并且它起作用了......
https://stackoverflow.com/a/26432537/450586
基本上...
转到 JDK/security 文件夹并编辑java.security
就我而言：
/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/security/java.security
改变
securerandom.source=file:/dev/random
到
securerandom.source=file:/dev/./urandom
答案2
使用 free 命令检查可用内存，是否足够，尤其是交换空间？检查日志文件 catalina.out，它显示了什么？