centos7.4 安装jenkins集成工具

0.环境说明：

①操作系统：centos7.4

②ROOT 权限

官网地址：https://www.jenkins.io/

1.安装Jenkins依赖：

更新

yum install -y ca-certificates   #更新证书，否则无法进行下一步
sudo wget -O /etc/yum.repos.d/jenkins.repo \
    https://pkg.jenkins.io/redhat-stable/jenkins.repo
sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key
sudo yum upgrade
# Add required dependencies for the jenkins package
sudo yum install java-17-openjdk #此处安装失败后则需要单独安装jdk 17
sudo yum install jenkins
sudo systemctl daemon-reload

安装openjdk-17

wget https://download.oracle.com/java/17/archive/jdk-17.0.8_linux-x64_bin.tar.gz 
tar -xvf jdk*.gz
mv jdk-17.0.8 /usr/java
ln -s /usr/java/bin/java /usr/bin/java
sudo yum reinstall jenkins

配置环境变量，在/etc/profile最后加入

export JAVA_HOME=/usr/java
export CLASSPATH=$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

使环境变量生效：

source /etc/profile
java -version    #查看当前JDK版本

2.启动Jenkins:

1
sudo systemctl enable jenkins

#开机启动

1
sudo systemctl start jenkins

#启动jenkins

1
sudo systemctl status jenkins

#查看jenkins状态

初始化jenkins

cat /var/lib/jenkins/secrets/initialAdminPassword #访问时输入

访问方式

localhost:8080

更多：

防火墙配置参考：

jenkins 其它配置：

修改操作用户为root 修改 /etc/sysconfig/jenkins

JENKINS_USER="jenkins"  #jenkins修改为root

赋予目录权限

chown -R root /var/log/jenkins
chgrp -R root /var/log/jenkins
chown -R root /var/lib/jenkins
chgrp -R root /var/lib/jenkins
chown -R root /var/cache/jenkins
chgrp -R root /var/cache/jenkins

3.Jenkinsj节点配置问题:

在建立除master节点以外的其它节点，首先要保证两端的JAVA版本一致

遇到问题：“lib/jenkins/.ssh/known_hosts [SSH] No Known Hosts file was found at /var/lib/jenkins/.ssh/known_hosts.”

在节点管理页面修改认证机制：