Ubuntu安装jenkins

Beginning March 28, 2023, the Jenkins weekly releases will use new repository signing keys for the Linux installation packages. The same change will be made in Jenkins LTS releases beginning April 5, 2023. Administrators of Linux systems must install the new signing keys on their Linux servers before installing Jenkins Jenkins weekly 2.397 or Jenkins LTS 2.387.2.
jenkins改变了签名秘钥，所以网上很多秘钥设置之后都会在apt update时报错。

系统：Ubuntu20.04.6
1、 安装openjdk：sudo apt-get install openjdk-17-jdk
2、 验证是否安装成功：java -version
3、 配置jenkins签名，一般使用第一个就够了：
1、Ubuntu LTS release

curl -fsSL https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key | sudo tee \
/usr/share/keyrings/jenkins-keyring.asc > /dev/null
echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \
https://pkg.jenkins.io/debian-stable binary/ | sudo tee \
/etc/apt/sources.list.d/jenkins.list > /dev/null

2、Ubuntu weekly release

curl -fsSL https://pkg.jenkins.io/debian/jenkins.io-2023.key | sudo tee \
  /usr/share/keyrings/jenkins-keyring.asc > /dev/null
echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \
  https://pkg.jenkins.io/debian binary/ | sudo tee \
  /etc/apt/sources.list.d/jenkins.list > /dev/null

4、 更新apt：sudo apt update
5、 安装jenkins：sudo apt-get install jenkins
6、 检查jenkins启动情况：systemctl status jenkins
7、 如果防火墙未开放8080端口，自行百度