Managing manager daemons

As a storage administrator, you can use the Ceph Orchestrator to deploy additional manager daemons. cephadm automatically installs a manager daemon on the bootstrap node during the bootstrapping process.

In general, you should set up a Ceph Manager on each of the hosts running the Ceph Monitor daemon to achieve same level of availability.

By default, whichever ceph-mgr instance comes up first is made active by the Ceph Monitors, and others are standby managers. There is no requirement that there should be a quorum among the `ceph-mgr` daemons.

If the active daemon fails to send a beacon to the monitors for more than the mon mgr beacon grace, then it is replaced by a standby.

If you want to pre-empt failover, you can explicitly mark a ceph-mgr daemon as failed with ceph mgr fail MANAGER_NAME command.