Our Jenkins CI server (
https://jenkins.company.com) doesn’t have access to Internet (neither directly nor through a proxy), yet we need to update both Jenkins itself as well as the Jenkins plugins.
We’ve set up another of our servers,
https://jenkins-repo.company.com, as a Jenkins mirror site, which on a regular basis runs this command in a cron job:
rsync -a -v rsync://rsync.osuosl.org/jenkins/plugins /srv/mirrors/jenkins/
/srv/mirrors/jenkins folder is hosted by Nginx.
As the rsync’ed files contain references to
https://updates.jenkins.io, Jenkins will try and contact
https://updates.jenkins.io when downloading the updated plugins, even though we’re hosting all the plugins over at
As a quick and easy workaround, I’ve simply added an entry like this to our Jenkins server’s /etc/hosts file:
18.104.22.168 is the IP address to