ubuntu18.04安装jenkins

1. 首先，需要安装Java。在终端中输入以下命令安装Java：

   sudo apt update
   sudo apt install default-jdk

2. 然后，下载Jenkins的APT存储库密钥并添加到系统中：

   wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -

3. 添加Jenkins的APT存储库：

   sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'

4. 更新APT缓存并安装Jenkins：

   sudo apt update
   sudo apt install jenkins

5. 启动Jenkins服务：

   sudo systemctl start jenkins

6. 检查Jenkins服务状态：

   sudo systemctl status jenkins

如果服务正常运行，输出应该类似于以下内容：

   ● jenkins.service - LSB: Start Jenkins at boot time
      Loaded: loaded (/etc/init.d/jenkins; generated)
      Active: active (exited) since Mon 2019-08-26 16:59:47 IST; 1min 42s ago
        Docs: man:systemd-sysv-generator(8)
     Process: 2231 ExecStart=/etc/init.d/jenkins start (code=exited, status=0/SUCCESS)

   Aug 26 16:59:45 ubuntu systemd[1]: Starting LSB: Start Jenkins at boot time...
   Aug 26 16:59:46 ubuntu jenkins[2231]: Correct java version found
   Aug 26 16:59:46 ubuntu jenkins[2231]:  * Starting Jenkins Automation Server jenkins
   Aug 26 16:59:46 ubuntu su[2272]: Successful su for jenkins by root
   Aug 26 16:59:46 ubuntu su[2272]: + ??? root:jenkins
   Aug 26 16:59:46 ubuntu su[2272]: pam_unix(su:session): session opened for user jenkins by (uid=0)
   Aug 26 16:59:47 ubuntu jenkins[2231]:    ...done.
   Aug 26 16:59:47 ubuntu systemd[1]: Started LSB: Start Jenkins at boot time.

7. 配置防火墙以允许Jenkins流量：

   sudo ufw allow 8080/tcp

8. 现在，可以通过在Web浏览器中输入“http://your_server_ip:8080”来访问Jenkins。输入管理员密码，该密码可以在以下位置找到：

   sudo cat /var/lib/jenkins/secrets/initialAdminPassword

9. 安装完成后，可以在Jenkins中安装所需的插件和配置Jenkins以满足特定的需求。