Jenkins installation and deployment environment under CentOS7

1, current environment

The current system version:

The current JDK version:

The current version of Tomcat:

Note: jdk and tomcat installation please refer to "CentOS7 environment installed jdk, tomcat and configuration environment variable"

2, Jenkins profiles, download

1. About
   Jenkins CI & CD open source software leader, providing over 1000 plug-in to support the construction, deployment, automation, meet the needs of any project.
   Details, please refer to the "Jenkins Chinese official documents" .

2. Download the
   recommended open source Tsinghua mirror sites, address: https://mirrors.tuna.tsinghua.edu.cn/jenkins/ . Here Jenkins.war choose to download generic versions.
   Use wget command, the command is as follows:

   wget https://mirrors.tuna.tsinghua.edu.cn/jenkins/war/2.190/jenkins.war
   

   

3, Jenkins release

1. Copy the file to the Tomcat jenkins.war webapps directory, as shown below:
   

2. Start Tomcat

   The command to start Tomcat, the command is as follows:

   systemctl start tomcat
   

3. Access Jenkins
   http://192.168.1.10:8080/jenkins access platform by jenkins (IP + port which is the port number and IP configuration of Tomcat tomcat server where), enter the following interface:
   

4. Jenkins unlocked
   by vim /root/.jenkins/secrets/initialAdminPassword view corresponding password, and then enter the password in the browser, into the following interface:
   

5. Jenkins离线问题
   出现：该jenkins实例似乎已离线 提示，是因为网络问题造成，因为https://updates.jenkins.io/update-center.json无法访问造成的。通过访问http://192.168.1.10:8080/jenkins/pluginManager/advanced，进入修改镜像源的界面，把原有的路径https://updates.jenkins.io/update-center.json修改成清华镜像源https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json，点击提交即可。
   

6. 重新访问http://192.168.1.10:8080/jenkins/地址，输入密码后进入下面界面（访问较慢，需要几分钟等待）。
   

7. 选择下载插件
     建议选择“选择插件来安装”，因为这一步下载插件非常的慢，正常情况通过第5步修改镜像源之后，就应该通过配置的镜像源下载插件，实际上不是这样的。而且在网上找了很多的方法，都没有成功。确定这个是jenkins官方存在的一个bug，暂时没有找到好的解决方案。
     暂时的解决方法：通过离线的安装方式进行安装。首先通过国内镜像下载插件*.hpi文件，然后通过【Plugin Manager】-【高级】-【上传插件】上传hpi文件，进行离线安装。
   

8. 进入平台

功能列表

• New Item 是创建流行线模块
• People 平台用户管理
• Build History 构建历史记录
• Manage Jenkins
  管理Jenkins，包括了Jenkins的系统信息，插件管理等信息
• My Views 我的视图，可以理解为是New Item创建出来的所有列表的一个分组信息。
• Credential
  system, with all the credentials, unified management here, such as the Tomcat administrator information, Git user information.
• New View to create a view

Jenkins Home:

the Manage Jenkins sub-interface: