1. 安装JDK【java8】
1.1. 软件安装
代码语言：javascript复制 1 [yun@mini05 software]# pwd
2 /app/software
3 [yun@mini05 software]# tar xf jdk1.8.0_112.tar.gz
4 [yun@mini05 software]# ll
5 total 201392
6 drwxr-xr-x 8 10 143 4096 Dec 20 13:27 jdk1.8.0_112
7 -rw-r--r-- 1 root root 189815615 Mar 12 16:47 jdk1.8.0_112.tar.gz
8 [yun@mini05 software]# mv jdk1.8.0_112/ /app/
9 [yun@mini05 software]# cd /app/
10 [yun@mini05 app]# ll
11 total 8
12 drwxr-xr-x 8 10 143 4096 Dec 20 13:27 jdk1.8.0_112
13 [yun@mini05 app]# ln -s jdk1.8.0_112/ jdk
14 [yun@mini05 app]# ll
15 total 8
16 lrwxrwxrwx 1 root root 13 May 16 23:19 jdk -> jdk1.8.0_112/
17 drwxr-xr-x 8 10 143 4096 Dec 20 13:27 jdk1.8.0_1121.2. 环境变量
代码语言：javascript复制 1 [root@mini05 ~]$ pwd
2 /app
3 [root@mini05 ~]$ ll -d jdk*
4 lrwxrwxrwx 1 yun yun 11 Mar 15 14:58 jdk -> jdk1.8.0_112
5 drwxr-xr-x 8 yun yun 4096 Dec 20 13:27 jdk1.8.0_112
6 [root@mini05 profile.d]$ pwd
7 /etc/profile.d
8 [root@mini05 profile.d]$ cat jdk.sh # java环境变量
9 export JAVA_HOME=/app/jdk
10 export JRE_HOME=/app/jdk/jre
11 export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib:$CLASSPATH
12 export PATH=$JAVA_HOME/bin:$PATH
13
14 [root@mini05 profile.d]# source /etc/profile
15 [root@mini05 profile.d]$ java -version
16 java version "1.8.0_112"
17 Java(TM) SE Runtime Environment (build 1.8.0_112-b15)
18 Java HotSpot(TM) 64-Bit Server VM (build 25.112-b15, mixed mode)2. 安装jenkins
2.1. 软件安装
代码语言：javascript复制1 [root@mini05 ~]# cd /etc/yum.repos.d/
2 [root@mini05 yum.repos.d]# wget http://pkg.jenkins.io/redhat/jenkins.repo
3 [root@mini05 yum.repos.d]# rpm --import http://pkg.jenkins.io/redhat/jenkins.io.key
4 [root@mini05 yum.repos.d]# yum install -y jenkins2.2. 启动jenkins
代码语言：javascript复制 1 [root@mini05 ~]# systemctl start jenkins
2 Job for jenkins.service failed because the control process exited with error code. See "systemctl status jenkins.service" and "journalctl -xe" for details.
3 [root@mini05 ~]# systemctl status jenkins.service # 查看Jenkins状态【因为有问题】
4 ● jenkins.service - LSB: Jenkins Automation Server
5 Loaded: loaded (/etc/rc.d/init.d/jenkins; bad; vendor preset: disabled)
6 Active: failed (Result: exit-code) since Sun 2018-10-07 10:28:30 CST; 5s ago
7 Docs: man:systemd-sysv-generator(8)
8 Process: 2483 ExecStart=/etc/rc.d/init.d/jenkins start (code=exited, status=1/FAILURE)
9
10 Oct 07 10:28:30 mini05 systemd[1]: Starting LSB: Jenkins Automation Server...
11 Oct 07 10:28:30 mini05 runuser[2488]: pam_unix(runuser:session): session opened for user jenkins by (uid=0)
12 Oct 07 10:28:30 mini05 jenkins[2483]: Starting Jenkins bash: /usr/bin/java: No such file or directory
13 Oct 07 10:28:30 mini05 runuser[2488]: pam_unix(runuser:session): session closed for user jenkins
14 Oct 07 10:28:30 mini05 jenkins[2483]: [FAILED]
15 Oct 07 10:28:30 mini05 systemd[1]: jenkins.service: control process exited, code=exited status=1
16 Oct 07 10:28:30 mini05 systemd[1]: Failed to start LSB: Jenkins Automation Server.
17 Oct 07 10:28:30 mini05 systemd[1]: Unit jenkins.service entered failed state.
18 Oct 07 10:28:30 mini05 systemd[1]: jenkins.service failed.
解决方法修改 jenkins 启动脚本
代码语言：javascript复制 1 [root@mini05 ~]# vim /etc/rc.d/init.d/jenkins
2 # 添加了 /app/jdk/bin/java 这样信息
3 ………………
4 candidates="
5 /etc/alternatives/java
6 /usr/lib/jvm/java-1.8.0/bin/java
7 /usr/lib/jvm/jre-1.8.0/bin/java
8 /usr/lib/jvm/java-1.7.0/bin/java
9 /usr/lib/jvm/jre-1.7.0/bin/java
10 /usr/bin/java
11 /app/jdk/bin/java
12 "
13 ………………再次报错修改
代码语言：javascript复制1 [root@mini05 ~]# systemctl start jenkins
2 Warning: jenkins.service changed on disk. Run 'systemctl daemon-reload' to reload units.
3 [root@mini05 ~]# systemctl daemon-reload # 执行该命令
重启Jenkins服务
代码语言：javascript复制1 [root@mini05 ~]# systemctl stop jenkins
2 [root@mini05 ~]# systemctl start jenkins3. 首次访问Jenkins
代码语言：javascript复制1 http://10.0.0.15 根据页面提示找密码，输入即可
离线问题
参考博文：安装Jenkins时不能联网安装插件问题解决
说明：在网上找了很多文章去解决该离线问题，但是最后都没有解决。所以只能进入页面后再手动安装常用插件。
创建用户
Jenkins URL
完毕
