Chapter 3. Upgrading RHCS 5 to RHCS 6 involving RHEL 8 to RHEL 9 upgrades
Upgrade from Red Hat Ceph Storage 5 to Red Hat Ceph Storage 6. The upgrade includes an upgrade from Red Hat Enterprise Linux 8 to Red Hat Enterprise Linux 9.
Important
Upgrade to the latest version of Red Hat Ceph Storage 5.3.z5 prior to upgrading to the latest version Red Hat Ceph Storage 6.1.
Prerequisites
- A running Red Hat Ceph Storage 5 cluster on Red Hat Enterprise Linux 8.
-
Backup of Ceph binary (
/usr/sbin/cephadm), ceph.pub (/etc/ceph), and the Ceph cluster’s public SSH keys from the admin node.
Procedure
- Upgrade the Red Hat Enterprise Linux version on all hosts of the cluster. For a detailed procedure, see Upgrading a host operating system from RHEL 8 to RHEL 9 to know the steps.
- After the Red Hat Enterprise Linux upgrade, register the Red Hat Ceph Storage nodes to the CDN and add the necessary repositories. For a detailed procedure, see Registering the Red Hat Ceph Storage nodes to the CDN and attaching subscriptions.
- Update the Red Hat Ceph Storage. For a detailed procedure, see Upgrade a Red Hat Ceph Storage cluster using cephadm.
