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- you can login as a non-root user with sudo access.
- you have installed Java, with the required settings.
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- JAVA_HOME points to the version of java that you want to use
- the memory settings (-Xms and -Xmx) on the line for CATALINECATALINA_OPTS are set as needed (this example assumes you are allocating 8GB of memory to tomcat)
- the location of the GC (Garbage Collection) log file, set in CATALINA_OPTS, is correct - in the examples below, this
/opt/tomcat/logs
Java 8
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[Unit] Description=Apache Tomcat Web Application Container After=network.target [Service] Type=forking Environment=JAVA_HOME=/opt/jdk/jdk1.8.0_85/jre Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid Environment=CATALINA_HOME=/opt/tomcat Environment=CATALINA_BASE=/opt/tomcat Environment='CATALINA_OPTS=-Xms8096M -Xmx8096M -server -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:/opt/tomcat/logs/gc.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=10m' Environment='JAVA_OPTS=-Djava.awt.headless=true' ExecStart=/opt/tomcat/bin/startup.sh ExecStop=/opt/tomcat/bin/shutdown.sh WorkingDirectory=/opt/tomcat User=tomcat Group=tomcat UMask=0007 RestartSec=10 Restart=always [Install] WantedBy=multi-user.target |
Java 11
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[Unit] Description=Apache Tomcat Web Application Container After=network.target [Service] Type=forking Environment=JAVA_HOME=/opt/jdk/jdk-11.0.13+8 Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid Environment=CATALINA_HOME=/opt/tomcat Environment=CATALINA_BASE=/opt/tomcat Environment='CATALINA_OPTS=-Xms8096M -Xmx8096M -server -verboseXlog:gc:file=/opt/tomcat/logs/gc.log:time,level,tags:filecount=10,filesize=10m' Environment='JAVA_OPTS=-Djava.awt.headless=true' ExecStart=/opt/tomcat/bin/startup.sh ExecStop=/opt/tomcat/bin/shutdown.sh WorkingDirectory=/opt/tomcat User=tomcat Group=tomcat UMask=0007 RestartSec=10 Restart=always [Install] WantedBy=multi-user.target |
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