[kolla-ansible] Default masakari configuration should evacuate instances across nodes in wallaby?

I'm working on upgrading an openstack farm from victoria to wallaby. After successful upgrade, I would like to enable hacluster and masakari to test HA between failing compute nodes. Everything seems to be running (pacemaker with the remote nodes OK, corosync without errors, masakari-monitors detects the 2 compute nodes online), but... when I simulate the failure of a node with shutdown, the failure and notification appears in the hostmonitor log, but the instances that were on the failed node don't evacuate, and I couldn't find documentation that explains how to do this specific configuration, if necessary. Does anyone have any ideas?