Chapter 2. Upgrading a host operating system from RHEL 8 to RHEL 9
Chapter 2. Upgrading a host operating system from RHEL 8 to RHEL 9 You can perform a Red Hat Ceph Storage host operating system upgrade from Red Hat Enterprise Linux 8 to Red Hat Enterprise Linux 9 using the Leapp utility. Prerequisites A running Red Hat Ceph Storage 5.3 cluster. The following are the supported combinations of containerized Ceph daemons. For more information, see the How colocation works and its advantages section in the Red Hat Ceph Storage Installation Guide . Ceph Metadata Server ( ceph-mds ), Ceph OSD ( ceph-osd ), and Ceph Object Gateway ( radosgw ) Ceph Monitor ( ceph-mon ) or Ceph Manager ( ceph-mgr ), Ceph OSD ( ceph-osd ), and Ceph Object Gateway ( radosgw ) Ceph Monitor ( ceph-mon ), Ceph Manager ( ceph-mgr ), Ceph OSD ( ceph-osd ), and Ceph Object Gateway ( radosgw ) Procedure Deploy Red Hat Ceph Storage 5.3 on Red Hat Enterprise Linux 8.8 with service. Note Verify that the cluster contains two admin nodes, so that while performing host upgrade in one admin node (with _admin label), the second admin can be used for managing clusters. For full instructions, see Red Hat Ceph Storage installation in the Red Hat Ceph Storage Installation Guide and Deploying the Ceph daemons using the service specifications in the Operations guide . Set the noout flag on the Ceph OSD. Example Perform host upgrade one node at a time using the Leapp utility. Put respective node maintenance mode before performing host upgrade using Leapp. Syntax Example Enable the ceph tools repo manually when executing the leapp command with the --enablerepo parameter. Example Refer to Upgrading RHEL 8 to RHEL 9 within the Red Hat Enterprise Linux product documentation on the Red Hat Customer Portal. Important After performing in-place upgrade from Red Hat Enterprise Linux 8 to Red Hat Enterprise Linux 9, you need to manually enable and start the logrotate.timer service. Verify the new IMAGE_ID and VERSION of the Ceph cluster: Example Continue with the Red Hat Ceph Storage 5.3 to Red Hat Ceph Storage 7 upgrade by following the Upgrading the Red Hat Ceph Storage cluster steps in the Red Hat Ceph Storage Upgrade Guide .
ceph osd set noout ceph orch host maintenance enter HOST ceph orch host maintenance enter host01 leapp upgrade --enablerepo rhceph-5-tools-for-rhel-9-x86_64-rpms systemctl start logrotate.timer systemctl enable logrotate.timer ceph version ceph orch ps