1，修改tomcat的catalina.sh文件
vim catalina.sh
[ -z "$CATALINA_BASE" ] && CATALINA_BASE="$CATALINA_HOME"CATALINA_PID="$CATALINA_BASE/tomcat.pid"(这行是你新增加的，在上下两行之间)# Ensure that any user defined CLASSPATH variables are not used on startup,
修改保存
2，添加或修改tomcat.service
vim /usr/lib/systemd/system/tomcat.service
修改成???????
[Unit]Description=TomcatAfter=syslog.target network.target remote-fs.target nss-lookup.target[Service]Type=forkingEnvironment="JAVA_HOME=/usr/local/java/jdk1.8"PIDFile=/usr/local/tomcat/apache-tomcat-8.5.39/tomcat.pidExecStart=/usr/local/tomcat/apache-tomcat-8.5.39/bin/startup.shExecStop=/bin/kill -s QUIT $MAINPIDExecReload=/bin/kill -s HUP $MAINPIDPrivateTmp=true[Install]WantedBy=multi-user.target
JAVA_HOME和tomcat都是自己的jdk和tomcat的安装路径
修改保存
3，重新载入修改后配置文件，让设置生效。
systemctl daemon-reload
4，启动tomcat.service
systemctl start tomcat.service
5，查看tomcat.service运行状态
systemctl status tomcat.service
6，将tomcat.service添加的自启动
systemctl enable tomcat.service