centos7安装jenkins

1、先安java

先下载jdk1.8.tar包安装

tar -zxvf jdk1.8.tar.gz -C /usr/local/java

vi /etc/profile

source /etc/profile

测试jdk安装情况

运行java、javac、java -version

2、安装tomcat

tar -zxvf apache-tomcat-9.0.54.tar.gz -C /usr/local/tomcat

vi /etc/profile

添加入CATALINA_HOME=/usr/local/tomcat/apache-tomcat-9.0.54

source /etc/profile

cd /usr/local/tomcat/apache-tomcat-9.0.54

、启动tomcat

./startup.sh

3、tomcat 注册为 systemctl

1、catalina.sh文件，在catlinabase行下添加pid配置。

2、tomcat.service放在/usr/lib/systemd/system下。

------catalina.sh内容添加CATALINA_PID="$CATALINA_BASE/tomcat.pid"（注意上下位置）：

Copy CATALINA_BASE from CATALINA_HOME if not already set

[ -z "$CATALINA_BASE" ] && CATALINA_BASE="$CATALINA_HOME"

只添加下面这句，上下为catalina.sh已有的，用来确定位置

CATALINA_PID="$CATALINA_BASE/tomcat9.pid"

Ensure that any user defined CLASSPATH variables are not used on startup,
but allow them to be specified in setenv.sh, in rare case when it is needed.
CLASSPATH=

-------tomcat.service文件示例：

[Unit]
Description=tomcat9
After=syslog.target
[Service]
Type=forking

Environment="JAVA_HOME=/usr/local/tools/jdk1.8.0_161"

ExecStart=/opt/apache-tomcat-9.0.26/bin/startup.sh
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true
User=root
Group=root
[Install]
WantedBy=multi-user.target

-------tomcat.service文件配置注意
After为在哪个服务后面启动。如果需要mysql数据库，tomcat可配置在mysql后启动(After=mariadb.service)。
Environment="JAVA_HOME=/usr/local/tools/jdk1.8.0_161"必须配置，etc/profile中的配置在此处不起作用。
ExecStart为启动地址。

-------systemctl命令