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MGR Service

The cephadm MGR service hosts multiple modules. These include the Ceph Dashboard and the cephadm manager module.

Specifying Networks

The MGR service supports binding only to a specific IP within a network.

example spec file (leveraging a default placement):

service_type: mgr
networks:
- 192.169.142.0/24

Allow co-location of MGR daemons

In deployment scenarios with just a single host, cephadm still needs to deploy at least two MGR daemons in order to allow an automated upgrade of the cluster. See mgr_standby_modules in the ceph-mgr administrator’s guide for further details.

See also: Co-location of daemons.

Further Reading