|NO.Z.00031|——————————|^^ 部署 ^^|——|CI/CD&Jenkins_pipeline部署.V05|----------------------------------

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[CloudNative：CI/CD&Jenkins_pipeline部署.V05]                                                    [Applications.CloudNative][|jenkins安装|yum|Jenkins-UI.初始化配置|Jenkins插件离线安装解决方案|]

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一、Jenkins安装概述

### --- Jenkins官网

~~~     官网： [https://jenkins.io](https://jenkins.io/)
~~~     插件：http://updates.jenkins-ci.org/download/plugins/

### --- 部署规划

~~~     centos7.x server1   10.10.10.11      jenkins    
~~~     centos7.x server2   10.10.10.12      tomcat     
~~~     centos7.x server3   10.10.10.13      git/gitlab 

二、部署Jenkins——yum

### --- 配置Jenkins.repo源
~~~     导入jenkins源

[root@jenkins ~]# wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo

~~~     导入jenkins官方证书

[root@jenkins ~]# rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key

### --- 安装Jenkins.yum
~~~     安装Jenkins最新版本
~~~     安装jenkins（安装的是最新的LTS版本）

[root@jenkins ~]# yum install -y jenkins
Installed:
  jenkins.noarch 0:2.277.1-1.1 

### --- 查看Jenkins安装了那些组件
~~~     查看Jenkins安装了那些组件

[root@jenkins ~]# rpm -ql jenkins
/etc/init.d/jenkins                         // 启动文件
/etc/logrotate.d/jenkins                    // 日志分割配置文件
/etc/sysconfig/jenkins                      // jenkins主配置文件
/usr/lib/jenkins                            // 存放war包目录
/usr/lib/jenkins/jenkins.war                // war 包
/usr/sbin/rcjenkins                         // 命令
/var/cache/jenkins                          // war包解压目录 jenkins网页代码目录
/var/lib/jenkins                            // jenkins 工作目录
/var/log/jenkins                            // 日志

### --- 修改Jenkins配置文件
~~~     修改配置文件

[root@qfedu.com ~]# grep "^[a-Z]" /etc/sysconfig/jenkins
JENKINS_HOME="/var/lib/jenkins"             // jenkins工作目录
JENKINS_JAVA_CMD=""
JENKINS_USER="jenkins"                      // jenkinx启动用户
JENKINS_JAVA_OPTIONS="-Djava.awt.headless=true"
JENKINS_PORT="8080"                         // 端口
JENKINS_LISTEN_ADDRESS=""
JENKINS_HTTPS_PORT=""
JENKINS_HTTPS_KEYSTORE=""
JENKINS_HTTPS_KEYSTORE_PASSWORD=""
JENKINS_HTTPS_LISTEN_ADDRESS=""
JENKINS_HTTP2_PORT=""
JENKINS_HTTP2_LISTEN_ADDRESS=""
JENKINS_DEBUG_LEVEL="5"
JENKINS_ENABLE_ACCESS_LOG="no"
JENKINS_HANDLER_MAX="100"                   // 最大连接
JENKINS_EXTRA_LIB_FOLDER=""
JENKINS_ARGS=""

### --- 启动Jenkins

~~~     首先需要修改一下启动脚本，文件在/etc/init.d/jenkins
~~~     因为jenkins的启动脚本默认java路径为：/usr/bin/java
~~~     但是我们新安装的java路径并不是在这个，所以我们需要新添加路径。如图下所示：
~~~     新路径地址为：/usr/local/jdk1.8/bin/java

~~~     修改Jenkins配置参数

[root@jenkins ~]# vim /etc/init.d/jenkins 
candidates="
/etc/alternatives/java
/usr/lib/jvm/java-1.8.0/bin/java
/usr/lib/jvm/jre-1.8.0/bin/java
/usr/lib/jvm/java-11.0/bin/java
/usr/lib/jvm/jre-11.0/bin/java
/usr/lib/jvm/java-11-openjdk-amd64
/usr/bin/java                                   // 默认路径
/usr/local/jdk1.8/bin/java                      // 新增路径

~~~     启动Jenkins

[root@jenkins ~]# systemctl start jenkins 

三、验证Jenkins安装

### --- 查看Jenkins进程

[root@jenkins ~]# ps -ef |grep jenkins
jenkins   12378      1 53 18:56 ?        00:00:43 /etc/alternatives/java -Dcom.sun.akuma.Daemon=daemonized -Djava.awt.headless=true -DJENKINS_HOME=/var/lib/jenkins -jar /usr/lib/jenkins/jenkins.war --logfile=/var/log/jenkins/jenkins.log --webroot=/var/cache/jenkins/war --daemon --httpPort=8080 --debug=5 --handlerCountMax=100 --handlerCountMaxIdle=20
root      12488  10728  0 18:57 pts/2    00:00:00 grep --color=auto jenkins

### --- 查看Jenkins端口号

[root@jenkins ~]# netstat -lnutp|grep jenkins
[root@jenkins ~]# netstat -antp |grep 8080
tcp6       0      0 :::8080                 :::*                    LISTEN      12378/java          

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Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart                                                                                                                                                   ——W.S.Landor

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