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Ceph Monitors are laggy or clock might be skewed

Ceph Monitors are laggy or clock might be skewed 1500 1000 Wido den Hollander

This weekend I got to investigate a Ceph cluster which had issues where the Monitors were constantly performing new elections. After some investigation on of the three monitors was eating 100% CPU on a single core and kept printing this in the logs: mon.charlie@2(peon).paxos(paxos updating c 106399655..106400232) lease_expire from mon.0 [2a00:XXX:121:XXX::6789:1]:6789/0 is 2.380296 seconds in…

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