Hi Community, We are performing failover test to see how quickly a VM will failover to another compute node in the event of a compute node hardware failure.
We forcefully power off the compute node where the VM is residing and monitor how long it takes to failover, and after a few tests the result is averagely around 5 mins for the compute node to be declared down and for the VM to failover to another node. Referring to https://cwiki.apache.org/confluence/display/cloudstack/host+ha, we've made a few changes in global settings hoping we can shorten the total time needed to failover but it doesn’t seem to work. We're wondering which settings that will effectively achieve our objective, we're looking at around 2 mins total for failover to complete. We are using Cloudstack 4.18.1 + Linstor + KVM Ubuntu Regards, Bryan
