linux安装Jenkins

centos yum部署jenkins，2024年支持版本

jenkins建议安装LTS长期支持版本，而不是安装每周更新版本，jenkins安装指定版本
 openjdk官网下载

Index of /jenkins/redhat-stable/ | 清华大学开源软件镜像站 | Tsinghua Open Source Mirror

Jenkins 宣布：Jenkins 2.357 以后要求jdk最低版本 11，否则启动会报错

1、openjdk 17配置

下载jdk：https://adoptium.net/zh-CN/temurin/releases/?version=17&arch=x64&os=linux&package=jdk
获取文件后，解压移动

[root@192 ~]# ls OpenJDK17U-jdk_x64_linux_hotspot_17.0.12_7.tar.gz
OpenJDK17U-jdk_x64_linux_hotspot_17.0.12_7.tar.gz

[root@192 ~]# tar xf OpenJDK17U-jdk_x64_linux_hotspot_17.0.12_7.tar.gz

[root@192 ~]#mv jdk-17.0.12+7/ /usr/local/

[root@192 ~]# ls /usr/local/jdk-17.0.12+7/
bin conf include jmods legal lib man NOTICE release
绑定软链接，要不然会报错

[root@192 ~]# ln -s /usr/local/jdk-17.0.12+7/bin/java /usr/bin/java

环境变量配置

vi /etc/profile

export JAVA_HOME=/usr/local/jdk-17.0.12+7
export JRE_HOME=$JAVA_HOME/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

source /etc/profile

openjdk 17 安装完成

[root@192 ~]# java -version
openjdk version “17.0.12” 2024-07-16
OpenJDK Runtime Environment Temurin-17.0.12+7 (build 17.0.12+7)
OpenJDK 64-Bit Server VM Temurin-17.0.12+7 (build 17.0.12+7, mixed mode, sharing)
[root@192 ~]#
2.480-1.1.noarch.rpm 安装完成

获取文件后，安装

[root@192 ~]# ls 2.480-1.1.noarch.rpm
2.480-1.1.noarch.rpm

[root@192 ~]# yum install -y 2.480-1.1.noarch.rpm

jenkins配置
vi /usr/lib/systemd/system/jenkins.service

修改：
	User=root 
	Group=root 
	Environment=“JAVA_HOME=/usr/local/jdk-17.0.12+7/”
    Environment=“JENKINS_JAVA_CMD=/usr/local/jdk-17.0.12+7/bin/java”
    8080访问端口是默认高危常见端口，可以自定义：
    Environment=“JENKINS_PORT=8080”


# $JENKINS_WEBROOT.
User=root
Group=root

# The Java home directory. When left empty, JENKINS_JAVA_CMD and PATH are consulted.
#Environment="JAVA_HOME=/usr/local/jdk-17.0.13+11/"

# The Java executable. When left empty, JAVA_HOME and PATH are consulted.
#Environment="JENKINS_JAVA_CMD=/usr/local/jdk-17.0.13+11/bin/java"

# Port to listen on for HTTP requests. Set to -1 to disable.
# To be able to listen on privileged ports (port numbers less than 1024),
# add the CAP_NET_BIND_SERVICE capability to the AmbientCapabilities
# directive below.
Environment="JENKINS_PORT=8089"

启动jenkins，并开机自启

[root@192 ~]# systemctl start jenkins

[root@192 ~]# systemctl status jenkins
● jenkins.service - Jenkins Continuous Integration Server
Loaded: loaded (/usr/lib/systemd/system/jenkins.service; disabled; vendor preset: disabled)
Active: active (running) since Wed 2024-11-20 17:19:51 CST; 2 days ago

[root@192 ~]# ss -atnl
LISTEN 0 50 *:8089

[root@192 ~]# systemctl enable jenkins
访问jenkins

ip+8089 登录帐号/密码
jenkins替换国内插件源

jenkins更换插件源的方法我试过了，发现清华镜像源的https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json里面的路径依然是国外的，替换了也没用。所以得更改这个文件里的连接。
- 找到update-center.json文件
  不同安装方式的文件位置不一样，找一找就能找到，我是rpm包安装的，在/var/lib/jenkins/updates/下
  1
  2
  3
  [root@192 ~]# cd /var/lib/jenkins/updates/
  [root@192 updates]# ls
  default.json hudson.tasks.Maven.MavenInstaller
- 修改update-center.json文件不同版本要替换的连接不一样，我这里的是https://updates.jenkins.io/download,有的可能是http://updates.jenkins-ci.org/download
  都替换成https://mirrors.tuna.tsinghua.edu.cn/jenkins就行了
  1
  sed -i 's#https://updates.jenkins.io/download#https://mirrors.tuna.tsinghua.edu.cn/jenkins#g' default.json && sed -i 's#http://www.google.com#https://www.baidu.com#g' default.json
- 更改jenkins插件管理中的URL
  Dashboard > 插件管理 > 高级 > 升级站点 > URL
  URL更改为https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json
  重启之后安装插件就很快了