Description of problem: We would like to know if HA pacemaker solution is supported on RHEL 9. SQL Server Setting up AG cluster document currently has RHEL 7 and RHEL 8 details for configuring pacemaker https://learn.microsoft.com/en-us/sql/linux/sql-server-linux-availability-group-cluster-pacemaker?view=sql-server-ver16&tabs=rhel Is HA pacemaker solution supported on RHEL 9 ? Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
Hi, Yes, the RHEL High Availability Add-On (including Pacemaker) is supported for RHEL 9. It is backward compatible with the version in RHEL 8, and the steps for configuring it should be nearly identical. Probably the most noticeable change is that in status output, "Promoted" and "Unpromoted" are now displayed as roles instead of "Master" and "Slave" for promotable clones.
Hello Ken, Thanks for your inputs. Could you please share the commands for configuration as well, and is it supported on pcs or crm ? Thanks, Aravind
(In reply to Aravind Mahadevan from comment #2) > Hello Ken, Thanks for your inputs. > Could you please share the commands for configuration as well, and is it > supported on pcs or crm ? > > Thanks, > Aravind Hi, RHEL provides pcs: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/configuring_and_managing_high_availability_clusters/assembly_overview-of-high-availability-configuring-and-managing-high-availability-clusters The upstream change log lists the key differences between pcs 0.9 in RHEL 8 and pcs 0.10 in 9: https://github.com/ClusterLabs/pcs/blob/main/CHANGELOG.md#0101---2018-11-23
(In reply to Ken Gaillot from comment #3) > (In reply to Aravind Mahadevan from comment #2) > > Hello Ken, Thanks for your inputs. > > Could you please share the commands for configuration as well, and is it > > supported on pcs or crm ? > > > > Thanks, > > Aravind > > Hi, > > RHEL provides pcs: > > https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/ > html/configuring_and_managing_high_availability_clusters/assembly_overview- > of-high-availability-configuring-and-managing-high-availability-clusters > > The upstream change log lists the key differences between pcs 0.9 in RHEL 8 > and pcs 0.10 in 9: > > https://github.com/ClusterLabs/pcs/blob/main/CHANGELOG.md#0101---2018-11-23 Actually, pcs 0.10 is in RHEL 8 and pcs 0.11 is in RHEL 9. There are not as many differences between pcs 0.10 and pcs 0.11. Most of the changes are in the output of some commands. See upstream changelog (most important are removed and changed sections) for full list of changes: https://github.com/ClusterLabs/pcs/blob/main/CHANGELOG.md#0111---2021-11-30