How do I upgrade from Red Hat Enterprise Linux 8 to Red Hat Enterprise Linux 9?

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Environment

  • Red Hat Enterprise Linux Server 8

Issue

  • How do I perform an in-place upgrade from Red Hat Enterprise Linux 8 to Red Hat Enterprise Linux 9?

Resolution

The RHEL 9 Documentation details all necessary steps for the upgrade process. It is recommended to carefully review the section regarding limitations and requirements as the process is only supported under specific circumstances.

Please carefully read Known Issues and following articles prior to upgrading just in case some may apply to your system. This will prevent a failure to happen and recovery to be difficult or impossible:

An overview of changes in Red Hat Enterprise Linux 9 since Red Hat Enterprise Linux 8

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