Hi,

I'm running a HA overcloud configuration and as far as I'm aware, there is 
currently no mechanism in place for restarting failed nodes in the cluster. 
Originally, I had been wondering if we would use a corosync/pacemaker cluster 
across the control plane with STONITH resources configured for each node (a 
STONITH plugin for Ironic could be written). This might be fine if a 
corosync/pacemaker stack is already being used for HA of some components, but 
it seems overkill otherwise. The undercloud heat could be in a good position to 
restart the overcloud nodes -- is that the plan or are there other options 
being considered?

Thanks,
Tom

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