Beginning with Jenkins 2.407, Jenkins administrators will be warned if they are running Jenkins on an operating system that is within 6 months of its end of life date.
The warning looks like this:
The Jenkins project does not test Jenkins on operating systems that are not supported by the operating system provider. We don’t’ support Jenkins on operating systems that are not supported by the operating system provider.
The Linux support policy states that Linux versions no longer supported by operating system providers are unsupported by Jenkins.
The Windows support policy states that Windows versions no longer supported by Microsoft are unsupported by Jenkins.
End of Life Operating Systems
Red Hat Enterprise Linux 7 will be unsupported by Red Hat after June 30, 2024. The Jenkins project has decided to accelerate end of life for Jenkins on Red Hat Enterprise Linux 7 and its derivatives. Jenkins support for RHEL 7 will end Nov 16, 2023. Users running Red Hat Enterprise Linux 7 or its derivatives (like CentOS 7, Oracle Linux 7, and Scientific Linux 7) will see the warning message in Jenkins that support for Jenkins on that operating system will end Nov 6, 2023.
Alpine 3.14, Fedora 36, and Ubuntu 18.04 all will display similar messages stating that they have reached end of life.
Users of those operating systems should upgrade their operating system to a supported version.