Mon
The default MON component in the ceph cluster is set to 5! MONs are in a quorum cluster, which is the best design for High Availability to make the component always available and enable.
In this quorum, MONs are set choose a master. This function called Election. In this election, each MONs are choose their weight with others. Available MONs to start the election must be more than half of quorum number (ex: Quorum=5, minimum number for election > 5/2 = 3)
Example bellow will check the Quorum on 3.
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