Centos7 用docker 搭建jenkins

安装环境

• 操作系统 centos7.3

• 安装Docker，安装及配置见 《Docker之Docker介绍及安装配置

• 安装Jenkins

  ---

  下载Jenkins

• 一、Jenkins安装
  1.获取docker镜像

• docker pull jenkins

  
  

  2.查看jenkins版本

• docker inspect jenkins

• [root@localhost ~]# docker inspect jenkins
  [
      {
          "Id": "sha256:cd14cecfdb3a657ba7d05bea026e7ac8b9abafc6e5c66253ab327c7211fa6281",
          "RepoTags": [
              "jenkins:latest"
          ],
          "RepoDigests": [
              "jenkins@sha256:eeb4850eb65f2d92500e421b430ed1ec58a7ac909e91f518926e02473904f668"
          ],
          "Parent": "",
          "Comment": "",
          "Created": "2018-07-17T16:20:34.183816595Z",
          "Container": "a3e3890f6333066d464113032a93622a8a12305fa1cf7a29e57ad29cbde66a19",
          "ContainerConfig": {
              "Hostname": "a3e3890f6333",
              "Domainname": "",
              "User": "jenkins",
              "AttachStdin": false,
              "AttachStdout": false,
              "AttachStderr": false,
              "ExposedPorts": {
                  "50000/tcp": {},
                  "8080/tcp": {}
              },
              "Tty": false,
              "OpenStdin": false,
              "StdinOnce": false,
              "Env": [
                  "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                  "LANG=C.UTF-8",
                  "JAVA_HOME=/docker-java-home",
                  "JAVA_VERSION=8u171",
                  "JAVA_DEBIAN_VERSION=8u171-b11-1~deb9u1",
                  "CA_CERTIFICATES_JAVA_VERSION=20170531+nmu1",
                  "JENKINS_HOME=/var/jenkins_home",
                  "JENKINS_SLAVE_AGENT_PORT=50000",
                  "TINI_VERSION=0.14.0",
                  "TINI_SHA=6c41ec7d33e857d4779f14d9c74924cab0c7973485d2972419a3b7c7620ff5fd",
                  "JENKINS_VERSION=2.60.3",
                  "JENKINS_UC=https://updates.jenkins.io",
                  "JENKINS_UC_EXPERIMENTAL=https://updates.jenkins.io/experimental",
                  "COPY_REFERENCE_FILE_LOG=/var/jenkins_home/copy_reference_file.log"
              ],
              "Cmd": [
                  "/bin/sh",
                  "-c",
                  "#(nop) COPY file:a4f750618f51f00d2f8268ac43fdd8d8ef5ce16e1d412afa5a9bc7492a5d975f in /usr/local/bin/install-plugins.sh "
              ],
              "ArgsEscaped": true,
              "Image": "sha256:9e1d90142b1a1b659fae5d4b6427c3196495b24006ac29943aac019390bdd5d1",
              "Volumes": {
                  "/var/jenkins_home": {}
              },
              "WorkingDir": "",
              "Entrypoint": [
                  "/bin/tini",
                  "--",
                  "/usr/local/bin/jenkins.sh"
              ],
              "OnBuild": [],
              "Labels": {}
          },
          "DockerVersion": "17.06.2-ce",
          "Author": "",
          "Config": {
              "Hostname": "",
              "Domainname": "",
              "User": "jenkins",
              "AttachStdin": false,
              "AttachStdout": false,
              "AttachStderr": false,
              "ExposedPorts": {
                  "50000/tcp": {},
                  "8080/tcp": {}
              },
              "Tty": false,
              "OpenStdin": false,
              "StdinOnce": false,
              "Env": [
                  "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                  "LANG=C.UTF-8",
                  "JAVA_HOME=/docker-java-home",
                  "JAVA_VERSION=8u171",
                  "JAVA_DEBIAN_VERSION=8u171-b11-1~deb9u1",
                  "CA_CERTIFICATES_JAVA_VERSION=20170531+nmu1",
                  "JENKINS_HOME=/var/jenkins_home",
                  "JENKINS_SLAVE_AGENT_PORT=50000",
                  "TINI_VERSION=0.14.0",
                  "TINI_SHA=6c41ec7d33e857d4779f14d9c74924cab0c7973485d2972419a3b7c7620ff5fd",
                  "JENKINS_VERSION=2.60.3",
                  "JENKINS_UC=https://updates.jenkins.io",
                  "JENKINS_UC_EXPERIMENTAL=https://updates.jenkins.io/experimental",
                  "COPY_REFERENCE_FILE_LOG=/var/jenkins_home/copy_reference_file.log"
              ],
              "Cmd": null,
              "ArgsEscaped": true,
              "Image": "sha256:9e1d90142b1a1b659fae5d4b6427c3196495b24006ac29943aac019390bdd5d1",
              "Volumes": {
                  "/var/jenkins_home": {}
              },
              "WorkingDir": "",
              "Entrypoint": [
                  "/bin/tini",
                  "--",
                  "/usr/local/bin/jenkins.sh"
              ],
              "OnBuild": [],
              "Labels": null
          },
          "Architecture": "amd64",
          "Os": "linux",
          "Size": 695718055,
          "VirtualSize": 695718055,
          "GraphDriver": {
              "Data": {
                  "LowerDir": "/var/lib/docker/overlay2/0d29e24fe75cbdb208ecb411bb2ebed2bf14de7b74da80899bf3cb65034ef90b/diff:/var/lib/docker/overlay2/3880d516c2506c6179730899cc1b3946b81bbc8f978ff488bae14c7b80ec933a/diff:/var/lib/docker/overlay2/812e49fd758182e4fb3d71159c15ab0815b9d7229329ba74931e4ae92a7763b8/diff:/var/lib/docker/overlay2/e2560b6a9c566cc1720c3313337259b68caa9e3f1ad331173a03b93f12524ceb/diff:/var/lib/docker/overlay2/e7ec25bbb7d232e60629969973507a622670ef64f2690e94f462d52aecd142bd/diff:/var/lib/docker/overlay2/36bffec22ff3af366a47805feca49dd862a4eb0b2a5814a7b857ecfad64e446f/diff:/var/lib/docker/overlay2/0a98ad8da0ded10dad6c26a7970665c8d948dd76bf18df68bb6d607cb517563f/diff:/var/lib/docker/overlay2/49dae95c4b4a42584b014f91e2f3fc9841e9ce6da566b21181c0a9b47e62ae6a/diff:/var/lib/docker/overlay2/d261d98f9f7564e8f04be46aed32974bebe1d0dfd13e0917f65494307a31d464/diff:/var/lib/docker/overlay2/e240752f2b7e868e7227d898efa7902c36903ca8c7f929cf293c8ca647bc6c08/diff:/var/lib/docker/overlay2/994d6c02ddfc3124ba8e4620475d0f04c5cbf2786b2fcb40bc1ef2325f50802c/diff:/var/lib/docker/overlay2/e182e8cd263a6239b68300f6ebf60baab86aabdbde157e92af849df871e7d4e0/diff:/var/lib/docker/overlay2/4e8a773b7ac16afb7815ba79af339c2c7ddfc3f27d0c6b465071179bc7e09e3c/diff:/var/lib/docker/overlay2/711ce086dd89ef5d2c781e73a601177f6b35e90900a1b22b0ed8f775fedb91fa/diff:/var/lib/docker/overlay2/7abf702f4da530ed159af0f84ad87f2416077dd7458cc11ea05e47c56c5f7a6f/diff:/var/lib/docker/overlay2/c88c187eaaef98695d21ec49987793cce27137fdb75ae2a2b650d2a440ae828c/diff:/var/lib/docker/overlay2/ec7becae8e35806e2e17f6d93e250ad38bf944293800c472c31a663cdb1eec11/diff:/var/lib/docker/overlay2/53312955925ee209944e70d24a080dcb89ea944a548c9edd4624afbd1f581924/diff:/var/lib/docker/overlay2/abf752d7c713285775f8bf3c80a9719ab7b60476305d664095466e8028e317c3/diff",
                  "MergedDir": "/var/lib/docker/overlay2/ee2f7b45daf8d367044507df8bcac2c4c72bc7d95e67486ff7b0c4e2f5d1713a/merged",
                  "UpperDir": "/var/lib/docker/overlay2/ee2f7b45daf8d367044507df8bcac2c4c72bc7d95e67486ff7b0c4e2f5d1713a/diff",
                  "WorkDir": "/var/lib/docker/overlay2/ee2f7b45daf8d367044507df8bcac2c4c72bc7d95e67486ff7b0c4e2f5d1713a/work"
              },
              "Name": "overlay2"
          },
          "RootFS": {
              "Type": "layers",
              "Layers": [
                  "sha256:3b10514a95bec77489a57d6e2fbfddb7ddfdb643907470ce5de0f1b05c603706",
                  "sha256:719d45669b35360e3ca0d53d159c42ca9985eb925a6b28ac38d0ded39a1314e8",
                  "sha256:ce6466f43b110e66d7d3a72600262a1f1b015d9a64aad5f133f081868d4825fc",
                  "sha256:fa0c3f992cbd10a0569ed212414b50f1c35d97521f7e4a9e55a9abcf47ca77e2",
                  "sha256:c477b6c8ca459c76222eb535faedb8979f4094552ac2a6cd56cb0f29262fdcfb",
                  "sha256:9c2e8b91bfa88a95f732adec2bfc5c03fb40c535e6646ecf386235cdfb4e0e96",
                  "sha256:c3ebb2aa7787555b542be6400d8064ae209a29d90c6e1b99ac5d02d5040392b4",
                  "sha256:518c9e7eb3264c27c8d77b4d194c80d14373c5942c2da2e4409f062573139f1b",
                  "sha256:571ae0d6961ab39851cdf93f5a753902cdd563d82e78cea54cbb6b0d420eb8f4",
                  "sha256:9fe468dbb76f324cd4287ea7e32edf6fe0f8aa993776fc152a17ae4a9a68f948",
                  "sha256:6ff38243bfb80a82749f0a954d1bd2faaa5673de4be5d5d9665100e2785fed40",
                  "sha256:c19390bb619a105dd32e573b3a26765216ee27736304266909104607045b4779",
                  "sha256:a0775f499ef138c2badd29831b31c28f4515c7802d0bde35111c8f8c7b60ed7d",
                  "sha256:1db7316340117880a83816808041a1f9ea1848632ab72f51ce79fb60a6135e3e",
                  "sha256:047f9c957a2e718be97e9928f1170d25e7dadd71737ca2a1e8e3db139c905915",
                  "sha256:ceed640cbb9350a13ce3051520b59833fb2fc4bc05c69873792293a2a27a485c",
                  "sha256:d51e4482f53a5764af588bea1c8dda817e968af11e7e2df3ae3051757e1dc533",
                  "sha256:37c1d818eb0bf741290f4122d6ae95b1dffb1f544896b0089ad7789613fa8804",
                  "sha256:b1891bf16fa79f6376941e4b2409d26f2c85e993de9ba3dcaee57dc80ac4d889",
                  "sha256:0577e068c587d352efe5dd72477ae6927626840d167fbbf59e17241b8f50a127"
              ]
          },
          "Metadata": {
              "LastTagTime": "0001-01-01T00:00:00Z"
          }
      }
  ]
  

• 启动Jenkins前准备

  ---

  创建jenkins文件夹

  创建jenkins文件夹，用于和容器内文件夹做磁盘挂载

  命令: 

  mkdir /usr/local/jenkins 

  为jenkins 文件夹添加读写权限以便jenkins应用运行时读写文件

• chmod 777 /usr/local/jenkins 

• 启动Jenkins

• docker run -itd -p 8880:8080 -p 50000:50000 --name jenkins --privileged=true -v /usr/local/jenkins:/usr/local/jenkins jenkins

  •  -p 8880:8880 -p 50000:50000 进行端口映射

  • --privileged=true 在CentOS7中的安全模块selinux把权限禁掉了，参数给容器加特权。

  • -v /usr/local/jenkins:/usr/local/jenkins 磁盘挂载

  • --name 以启动容器的名字
    第一个jenkins 容器的名字 (--name jenkins --privileged=true)

    第二个jenkins 镜像的名字(/usr/local/jenkins:/usr/local/jenkins jenkins)

    当容器停止时/jenkins不会被清除，便于数据备份，体现了数据与程序分离的原则，通过--name 来指定Jenkins的名称，便于查找

查看运行状态

docker ps

访问jenkins服务需要输入密码
先进入到容器内部 

docker exec -it jenkins /bin/bash

jenkins 为容器的名字

 退出当前jenkins

exit

查看防火墙状态

systemctl status firewalld

查看防火墙的开放端口

firewall-cmd --list-all 

结果报错：

解决：是因为 之前安装过Python3 将Python2.7 替换导致的

 

以上提示中提到了“/usr/bin/firewall-cmd”，我们输入以下命令：

vi /usr/bin/firewall-cmd

修改第一行，在python后面添加数字2.7：

修改后保存即可

在此输入 

firewall-cmd --list-all 

查看对应的规则信息

将jenkins 端口 8880加入到开放的列表中

   firewall-cmd --permanent --add-port=8880/tcp

# 移除端口 附加的防火墙其他知识
firewall-cmd --permanent --remove-port=8080/tcp

#重启防火墙(修改配置后要重启防火墙)
firewall-cmd --reload

再次查看防火墙开放的端口，8880 被加入进去

 接下来就可以用http://ip:8880 来访问jenkins

 

 根据提示进入到  容器中查看对应的密码

 将密码粘贴到此处

 输入后安装建议的插件，推荐的插件里就包含版本控制软件git。

 

完毕后，根据提示设置登陆账户

然后新建一个项目，在源代码控制那一栏，输入你的项目的线上git仓库地址，注意默认应该是master分支，因为生产环境部署的代码必须是主分支