#看是否安装java

[root@localhost ~]# java -version

-bash: java:未找到命令

#安装openjdk

[root@localhost ~]# yum install java-1.8.0-openjdk

已安装:

  java-1.8.0-openjdk.x86_64 1:1.8.0.161-2.b14.el7                                          

作为依赖被安装:

  copy-jdk-configs.noarch 0:3.3-2.el7                                                       

  giflib.x86_64 0:4.1.6-9.el7                                                               

  java-1.8.0-openjdk-headless.x86_64 1:1.8.0.161-2.b14.el7                                  

  javapackages-tools.noarch 0:3.4.1-11.el7                                                  

  libXfont.x86_64 0:1.5.2-1.el7                                                             

  libXtst.x86_64 0:1.2.3-1.el7                                                              

  libfontenc.x86_64 0:1.1.3-3.el7                                                           

  lksctp-tools.x86_64 0:1.0.17-2.el7                                                        

  python-javapackages.noarch 0:3.4.1-11.el7                                                 

  python-lxml.x86_64 0:3.2.1-4.el7                                                          

  ttmkfdir.x86_64 0:3.0.9-42.el7                                                            

  tzdata-java.noarch 0:2018c-1.el7                                                          

  xorg-x11-font-utils.x86_64 1:7.5-20.el7                                                   

  xorg-x11-fonts-Type1.noarch 0:7.5-9.el7                                                  

完毕！

#查看java版本

[root@localhost ~]# java -version

openjdk version "1.8.0_161"

OpenJDK Runtime Environment (build 1.8.0_161-b14)

OpenJDK 64-Bit Server VM (build 25.161-b14, mixed mode)

#安装wget软件

[root@localhost ~]# yum install wget

已安装:

  wget.x86_64 0:1.14-15.el7_4.1                                                            

完毕！

#下载jenkins软件包

[root@localhost ~]# wget https://mirrors.tuna.tsinghua.edu.cn/jenkins/redhat-stable/jenkins-2.222.3-1.1.noarch.rpm

#查看是否有jenkins软件包

[root@localhost ~]# rpm -qa | grep jenkins

#安装jenkins

[root@localhost ~]# rpm -ivh jenkins-2.190.3-1.1.noarch.rpm

警告：jenkins-2.190.3-1.1.noarch.rpm:头V4 DSA/SHA1 Signature, 密钥 ID d50582e6: NOKEY

准备中...                          ################################# [100%]

正在升级/安装...

   1:jenkins-2.190.3-1.1              ################################# [100%]

#查看是否有jenkins软件包

[root@localhost ~]# rpm -qa | grep jenkins

jenkins-2.190.3-1.1.noarch

#启动jenkins

[root@localhost ~]# systemctl start jenkins

[root@localhost ~]# systemctl enable jenkins

jenkins.service is not a native service, redirecting to /sbin/chkconfig.

Executing /sbin/chkconfig jenkins on

[root@localhost ~]# systemctl status jenkins

● jenkins.service - LSB: Jenkins Automation Server

   Loaded: loaded (/etc/rc.d/init.d/jenkins; bad; vendor preset: disabled)

Active: active (running) since日 2020-05-10 21:24:46 CST; 51s ago

     Docs: man:systemd-sysv-generator(8)

  Process: 1713 ExecStart=/etc/rc.d/init.d/jenkins start (code=exited, status=0/SUCCESS)

   CGroup: /system.slice/jenkins.service

           └─1734 /etc/alternatives/java -Dcom.sun.akuma.Daemon=daemonized -Djava.awt.hea...

5月 10 21:24:45 localhost.localdomain systemd[1]: Starting LSB: Jenkins Automation Ser.....

5月 10 21:24:45 localhost.localdomain runuser[1718]: pam_unix(runuser:session): session...)

5月 10 21:24:46 localhost.localdomain jenkins[1713]: Starting Jenkins [  确定  ]

5月 10 21:24:46 localhost.localdomain systemd[1]: Started LSB: Jenkins Automation Server.

Hint: Some lines were ellipsized, use -l to show in full.

#查看jenkins进程

[root@localhost ~]# ps -aux | grep java

jenkins    1734  149 15.8 3059984 296288 ?      Ssl  21:24   0:22 /etc/alternatives/java -Dcom.sun.akuma.Daemon=daemonized -Djava.awt.headless=true -DJENKINS_HOME=/var/lib/jenkins -jar /usr/lib/jenkins/jenkins.war --logfile=/var/log/jenkins/jenkins.log --webroot=/var/cache/jenkins/war --daemon --httpPort=8080 --debug=5 --handlerCountMax=100 --handlerCountMaxIdle=20