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Hi list, Yesterday afternoon we experienced a compute node outage in our OpenStack (obviously Ceph backed) cluster. We tried to (re)start compute instances again as fast as possible, resulting in some KVM/RBD clients getting blacklisted. The problem was spotted very quickly so we could remove the listing at once while the cluster was coping fine with the boot storm. Question: what can we do to prevent the blacklisting? Or, does it make sense to completely disable the mechanism (doesn't feel right) or maybe configure it differently? Thanks! Regards, Kees --
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