jenkins upgrade
Install Jenkins
Update the system
sudo apt update && sudo apt upgrade -y
Install Java because Jenkins requires it
- Check supported versions: Jenkins Java Support Policy
sudo apt install default-jre
Add Jenkins repository
sudo wget -O /usr/share/keyrings/jenkins-keyring.asc https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key
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
Check available version
sudo apt-cache adison jenkins
Install specific version - 2.426-1
sudo apt-get install -y jenkins=2.426.1
sydo systemctl enable jenkins
Backup Jenkins
Locate the Jenkins home directory
- Check
JENKINS_HOMEvariable - Or, go to Manage Jenkins > System Information > user.home
- In this case it is
/var/lib/jenkin
Important directory to backup
config.xml: The main configuration file (global settings, security, etc.)jobs/: Contains subdirectories for each job, including their config.xml (job settings) and builds/ (build history)plugins/: Contains installed plugins, though you can reinstall these latersecrets/: Stores encryption keys and credentials (e.g., master.key, hudson.util.Secret)
Stop Jenkins
sudo systemctl stop jenkins