1.3. Changes in Red Hat Enterprise Linux 9
The Red Hat OpenStack Platform (RHOSP) 17.1 uses Red Hat Enterprise Linux (RHEL) 9.2 as the base operating system. As a part of the upgrade process, you will upgrade the base operating system of nodes to RHEL 9.2.
Before beginning the upgrade, review the following information to familiarize yourself with RHEL 9:
- If your system contains packages with RSA/SHA-1 signatures, you must remove them or contact the vendor to get packages with RSA/SHA-256 signatures before you upgrade to RHOSP 17.1. For more information, see SHA-1 deprecation in Red Hat Enterprise Linux 9.
- For more information about the latest changes in RHEL 9, see the Red Hat Enterprise Linux 9.2 Release Notes.
- For more information about the key differences between Red Hat Enterprise Linux 8 and 9, see Considerations in adopting RHEL 9.
- For general information about Red Hat Enterprise Linux 9, see Product Documentation for Red Hat Enterprise Linux 9.
- For more information about upgrading from RHEL 8 to RHEL 9, see Upgrading from RHEL 8 to RHEL 9.
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