CentOS 7下安装tomcat 8.0.36并自动启动

1.删除系统自带jdk
[root@plc001 ~]# rpm -e --nodeps copy-jdk-configs-1.2-1.el7.noarch java-1.8.0-openjdk-headless-1.8.0.102-4.b14.el7.x86_64 java-1.8.0-openjdk-1.8.0.102-4.b14.el7.x86_64
2.安装jdk
[root@plc001 ~]# rpm -ivh jdk-8u112-linux-x64.rpm
[root@plc001~]# java -version
java version “1.8.0_112”
Java™ SE Runtime Environment (build 1.8.0_112-b15)
Java HotSpot™ 64-Bit Server VM (build 25.112-b15, mixed mode)
3.解压tomcat
[root@plc001 ~]# tar -zxvf apache-tomcat-8.0.36.tar.gz
4.在/app/apache-tomcat-8.0.36/bin/setclasspath.sh配置
# Make sureprerequisite environment variables are set在这个前面添加
export JAVA_HOME=/usr/java/jdk1.8.0_112
export JRE_HOME=/usr/java/jdk1.8.0_112/jre
5.在tomca7/bin 目录下面，新建 setenv.sh配置，catalina.sh启动的时候会调用，同时配置java内存参数
setenv.sh的内容如下：
[root@plc001 ~]# vi setenv.sh
export CATALINA_HOME=/app/apache-tomcat-8.0.36
export CATALINA_BASE=/app/apache-tomcat-8.0.36
#设置Tomcat的PID文件
CATALINA_PID="$CATALINA_BASE/tomcat.pid"
#添加JVM选项
JAVA_OPTS="-server -XX:PermSize=256M -XX:MaxPermSize=1024m -Xms512M -Xmx1024M -XX:MaxNewSize=256m"

6.在/usr/lib/systemd/system目录下增加tomcat.service，目录必须是绝对目录
内容如下：
[root@plc001 ~]# vi /usr/lib/systemd/system/tomcat.service
[Unit]
Description=Tomcat
After=syslog.targetnetwork.target remote-fs.target nss-lookup.target

[Service]
Type=forking
PIDFile=/app/apache-tomcat-8.0.36/tomcat.pid
ExecStart=/app/apache-tomcat-8.0.36/bin/startup.sh
ExecReload=/bin/kill-s HUP $MAINPID
ExecStop=/bin/kill-s QUIT $MAINPID
PrivateTmp=true

[Install]
WantedBy=multi-user.target
7.使服务开机启动
[root@plc001 ~]#systemctl enable tomcat.service
启动tomcat
systemctl start tomcat.service
停止tomcat
systemctl stop tomcat.service
查看tomcat状态
systemctl status tomcat.service
删除开机启动
systemctl disable tomcat.service
查看进程
ps -ef|grep tomcat

在CentOS 6.5上开机自动启动，在 /etc/rc.local 中增加以下一行即可
Last login: Mon Jan 29 18:19:25 2018 from testcqsh01.test.com
[root@PLC001 ~]# vi /etc/rc.local
/app/apache-tomcat-8.0.36/bin/startup.sh