jenkins2git

• Periodic backup of Jenkins configs to Git

Create user and repository in Gitlab:

• Create user "jenkins"
• Create repository "jenkins-configs"
• Copy repo link to clipboard
• Goto Repository => Settings => Members
• Add Jenkins as Maintainer (only maintainer can do an initial push to empty Gitlab repo)

Create repository from command line on Jenkins host:

sudo -Hiu jenkins
cd ~
git init
git config --global user.name Jenkins
git config --global user.email "jenkins@$(hostname -f)"
git remote add origin PASTE_HERE_REPO_LINK_FROM_GITLAB
ssh-keygen
cat ~/.ssh/id_rsa.pub

Gitlab:

• Users => Jenkins => Impersonate => Personal Settings => SSH keys: paste contents of id_rsa.pub here

Create job in Jenkins GUI:

• Name = Backup Jenkins configs to Git
• Type = Free job
• Label = master (you should edit Master node and create this label!)
• SCM = None
• Build = Build Periodically
• Schedule = 20 04 * * *
• Build step = Execute Shell
• Paste the contents of jenkins2git.sh
• Save

Gitlab:

• Settings => Members: decrease Jenkins permissions from Maintainer to Developer
• Settings => Repository => Protected branches: master => Allow to push: change from Maintainers to Maintainers+Developers

See also:

• https://gist.github.com/cenkalti/5089392 -- my work is based on it.