docker-compose安裝JenKins

一、Jenkins

Jenkins是一個開源軟件項目，是基於Java開發的一種持續集成工具，用於監控持續重復的工作，旨在提供一個開放易用的軟件平台，使軟件的持續集成變成可能。

JenKins官網

二、安裝JenKins的前提條件

硬件	最低要求	推薦
內存	256M	1GB或更高
硬盤	1GB（作為一個Docker容器運行jenkins的話推薦10GB）	50GB或更高

三、部署規划

服務器IP	192.168.113.48
端口	8928
安裝目錄	/home/work/docker-jenkins
數據卷映射目錄	/home/work/docker-jenkins/data

四、安裝JenKins

• 在安裝目錄下創建docker-jenkins目錄，創建成功后進入該目錄

  mkdir docker-jenkins
  cd docker-jenkins
  

• 新建並按照規划編輯docker-compose.yml文件，編輯完后保存退出

  vim docker-compose.yml
  

  version: '3'
  services:
    jenkins:
      image: 'jenkins/jenkins:lts'
      container_name: jenkins
      restart: always
      environment:
        - TZ=Asia/Shanghai
      ports:
        - '8928:8080'
        - '50000:50000'
      volumes:
        - '/etc/localtime:/etc/localtime'
        - './data:/var/jenkins_home'
        - '/var/run/docker.sock:/var/run/docker.sock'
        - '/usr/bin/docker:/usr/bin/docker'
  

• 在安裝目錄下執行相關命令，啟動容器

  docker-compose up -d
  

  執行命令后發現服務並沒有運行，查看日志：

  [root@node03 docker-jenkins]# docker-compose ps
   Name                Command                 State      Ports
  -------------------------------------------------------------
  jenkins   /sbin/tini -- /usr/local/b ...   Restarting        
  [root@node03 docker-jenkins]# docker-compose logs -f
  Attaching to jenkins
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | Can not write to /var/jenkins_home/copy_reference_file.log. Wrong volume permissions?
  jenkins    | touch: cannot touch '/var/jenkins_home/copy_reference_file.log': Permission denied
  

  通過日志發現，是由於權限不足導致服務沒有正常運行， 因為當映射本地數據卷時，/home/work/docker-jenkins目錄的擁有者為root用戶，而容器中jenkins user的uid為1000；執行以下命令即可。

  chown -R 1000:1000 /home/work/docker-jenkins
  

  執行命令后會發現服務已正常啟動：

  [root@node03 docker-jenkins]# chown -R 1000:1000 /home/work/docker-jenkins
  You have new mail in /var/spool/mail/root
  [root@node03 docker-jenkins]# docker-compose ps
   Name                Command               State                        Ports                      
  ---------------------------------------------------------------------------------------------------
  jenkins   /sbin/tini -- /usr/local/b ...   Up      0.0.0.0:50000->50000/tcp, 0.0.0.0:8928->8080/tcp
  

五、驗證Jenkins

• 在瀏覽器輸入ip:端口，頁面提示解鎖Jenkins

  

  根據頁面提示信息，密碼路徑（路徑為容器中路徑）如上圖所示，在此之前已經做了數據映射，不用登錄容器，直接在宿主機查看即可：

  [root@node03 docker-jenkins]# cat /home/work/docker-jenkins/data/secrets/initialAdminPassword 
  d1d17726052b4716acd6315a276fd0fb
  

  將查出來的密碼復制到瀏覽器中即可。點擊"繼續"就會出現以下界面：

  

  根據自己所需進行選擇即可。(建議選擇“安裝推薦的插件”，若插件安裝失敗，多試幾次即可)

插件下載較慢是由於服務器在國外，所以下載緩慢，可以更換為國內插件源：
Jenkins更換國內插件鏡像源教程