Modify Fencing Time (UNSTABLE)
To reduce fencing time you must modify the next files:
/usr/share/perl5/PVE/HA/NodeStatus.pm
Change $fence_delay = 60;
to $fence_delay = 10;
/usr/share/perl5/PVE/CLI/ha_manager.pm
Change $tdiff > 30;
to $tdiff > 10;
Then copy the files to ALL nodes in the Proxmox VE Cluster.