Chapter 4. Testing
Warning
The following procedure involves deliberately crashing a Compute node. Doing so forces the automated evacuation of instances through Instance HA.
Boot one or more instances on the overcloud before crashing the Compute node hosting the instances in question:
stack@director $ . overcloudrc stack@director $ nova boot --image cirros --flavor 2 test-failover stack@director $ nova list --fields name,status,hostLog in to the Compute node hosting the instances you just booted (as in,
compute-n):stack@director $ . stackrc stack@director $ ssh -lheat-admin compute-n heat-admin@compute-n $Crash the node:
heat-admin@compute-n $ echo c > /proc/sysrq-triggerAfter several minutes, verify that these instances restarted on online Compute nodes. To check:
stack@director $ nova list --fields name,status,host stack@director $ nova service-list
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