Hi Christoffer Please find the doc related to KVM HA
https://cwiki.apache.org/confluence/display/cloudstack/host+ha https://cwiki.apache.org/confluence/display/CLOUDSTACK/KVM+HA+with+IPMI+Fencing https://cwiki.apache.org/confluence/display/CLOUDSTACK/Out-of-band+Management+for+CloudStack https://cwiki.apache.org/confluence/display/CLOUDSTACK/High+Availability+Developer's+Guide https://www.shapeblue.com/host-ha-for-kvm-hosts-in-cloudstack/ Currently there is a issue with HOST HA and VM HA sync, investigation is going to find the root cause https://github.com/apache/cloudstack/issues/7543#issuecomment-3782700146 I would recommend to use only VM HA feature for now https://github.com/apache/cloudstack/issues/10477#issuecomment-2753247589 Regards Kiran From: Christoffer Lilja <[email protected]> Date: Tuesday, 27 January 2026 at 8:55 PM To: [email protected] <[email protected]> Subject: How is KVM HA expected to work and how (HW without IPMI) I do not know if I have unrealistic expectations of Cloudstack 4.22 in regards to KVM HA. I'm running Cloudstack on hardware with no IPMI and expect some failover when a KVM instance is manually stopped on the host, is unexpectedly killed or dies. Cloudstack lists the VM as running and nothing happens, the VM will not be restarted to any extent. What I expect is that the VM should be restarted, preferably on another host. The current setup is running on NFS for primary and secondary right now. I expect the next cluster to have its primary on Ceph RBD and secondary on NFS hosted by Ceph. I've read the HA documentation and I've deactivated all Host HA, as this else will be taken into account before handling the KVM HA (As far as I understand). Checked that the files in the KVMHA are updated with timestamps correctly. NTP is running correctly. All VM's to have HA activated in their offerings, I even forced HA for VM's in the Global configuration. Please tell me how KVM HA is intended to work, if my expectations are off and I would be super grateful for KVM HA tests I can do to trigger the KVM HA functionality. Christoffer Lilja Software and infrastructure consulting Tel: 0707557328 Web: zilux.se <https://www.zilux.se/>
