Red Hat Enterprise Linux 7 will be unsupported by the Jenkins project Nov 16, 2023 as announced in the May 30, 2023 blog post and discussed in the community discussion topic. This is a very good time to transition to a new server that is running a newer operating system like Red Hat Enterprise Linux 9
- Create a backup of the Jenkins home directory on your old RHEL 7 server.
- Install Red Hat Enterprise Linux 9 on a new server
- Install Java 17 and Jenkins 2.414.1 on the new server
- Install the plugins on the new server based on the plugins installed on the old RHEL 7 server
- Create a backup of the installation on the new server so that you can restore in case of surprises
- Restore the jobs and other configurations from the old server to the new server (don’t restore the plugins, you want the new plugins installed with 2.414.1)
- Test the new server meets your needs, then switch from the old server to the new server