Centos7 Jenkins
代码上线持续集成
随时随地将代码合并，这种方法叫做持续集成。
持续集成（CONTINUOUS INTEGRATION，简称CI）
持续集成指的是，频繁地（一天多次）将代码集成到主干。
它的好处主要有两个。
（1）快速发现错误。每完成一点更新，就集成到主干，可以快速发现错误，定位错误也比
较容易。
（2）防止分支大幅偏离主干。如果不是经常集成，主干又在不断更新，会导致以后集成的
难度变大，甚至难以集成。
持续交付
· 持续交付（CONTINUOUS DELIVERY）指的是，频繁地将软件的新版本，交付给质量团队
或者用户，以供评审。 如果评审通过，代码就进入生产阶段。
· 持续交付可以看作持续集成的下一步。它强调的是，不管怎么更新，软件是随时随地可以
交付的。
持续部署
· 持续部署（CONTINUOUS DEPLOYMENT）是持续交付的下一步，指的是代码通过评审以后，
自动部署到生产环境。
· 持续部署的目标是，代码在任何时刻都是可部署的，可以进入生产阶段。
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JENKINS介绍
JENKINS是一个用JAVA编写的开源的持续集成工具。在与ORACLE发生争执后，项目从HUDSON项目独立出来。
JENKINS提供了软件开发的持续集成服务。它运行在SERVLET容器中（例如APACHETOMCAT）。它支持软件配置管理（SCM）工具（包括ACCUREV SCM、 CVS、 SUBVERSION、GIT、 PERFORCE、 CLEARCASE和RTC），可以执行基于APACHE ANT和APACHE MAVEN的项目，以及任意的SHELL脚本和WINDOWS批处理命令。 JENKINS的主要开发者是川口耕介。
JENKINS是在MIT许可证下发布的自由软件。
安装JENKINS
环境准备
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准备2台安装好CENTOS7.2系统的虚拟机，内存1G+。
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所有虚拟机的防火墙和SELINUX关闭
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主机名及IP地址关系如下：
Jenkins 10.0.0.202 不需要安装软件
Gitlab 10.0.0.201 安装好gitlab
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Linux中能发邮件的账号
安装JENKINS
常规安装方法：使用RPM包安装
RPM包下载地址：
http://pkg.jenkins.io/redhat-stable/
清华源地址： https://mirrors.tuna.tsinghua.edu.cn/jenkins/redhat-stable/
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yum安装jdk
yum -y install java-1.8.0-openjdk java-1.8.0-openjdk-devel
安装rpm包
rpm -ivh jenkins-2.73.1-1.1.noarch.rpm
启动
/etc/init.d/jenkins start
解锁JENKINS
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黏贴上去
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安装插件
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上传并解压插件
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安装插件离线包
tar xfP jenkins_plugins.tar.gz
/etc/init.d/jenkins restart
注： Jenkins插件目录/var/lib/jenkins/plugins/
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Jenkins使用
# rpm -ql jenkins
/etc/init.d/jenkins # 启动文件
/etc/logrotate.d/jenkins # 日志轮询
/etc/sysconfig/jenkins # Jenkins主配置文件
/usr/lib/jenkins # 存放war包
/usr/lib/jenkins/jenkins.war # war包
/usr/sbin/rcjenkins # 命令
/var/cache/jenkins # Jenkins的web站点目录
/var/lib/jenkins # Jenkins的工作目录
/var/log/jenkins # 日志
配置并发执行任务数量
系统管理à系统设置
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配置邮箱
系统管理à系统设置
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自动测试项目
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gitlab添加公钥
ssh-keygen
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cat .ssh/id_rsa.pub
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在gitlab web界面添加key
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把私钥放入Jenkin
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cat .ssh/id_rsa
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jenkins 构建工作的目录
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创建目录
mkdir /data/ccc –p
添加数组
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gitlab创建文件
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测试拉取项目
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/var/lib/jenkins/workspace/ 工作目录
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Git Jenkins自动同步
配置 git 链接 Jenkins
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选择链接
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配置系统设置
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配置链接密码
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点击测试
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Jenkins自动同步了
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在 git测试
创建文件并推送gitlab
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查看jenkins 状态
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查看文件是否自动推送
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