I’ve recently had a couple of incidents with my Blade 3 in a Cluster Box: Node #3 (it’s always the same one) no longer reacts and drops out of the Ceph cluster. Even by using the serial console via control board, I can only type in the username, and after that, nothing happens. SSH access is dead. Grafana shows 100% CPU load.
The only possibility to get this node back to life, is to restart the whole cluster and to risk trouble with Ceph and other cluster apps.