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Diffstat (limited to 'doc/mgr/mds_autoscaler.rst')
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diff --git a/doc/mgr/mds_autoscaler.rst b/doc/mgr/mds_autoscaler.rst new file mode 100644 index 000000000..46fc44155 --- /dev/null +++ b/doc/mgr/mds_autoscaler.rst @@ -0,0 +1,23 @@ +MDS Autoscaler Module +===================== + +The MDS Autoscaler Module monitors file systems to ensure sufficient MDS +daemons are available. It works by adjusting the placement specification for +the orchestrator backend of the MDS service. To enable, use: + +.. sh: + + ceph mgr module enable mds_autoscaler + +The module will monitor the following file system settings to inform +placement count adjustments: + +- ``max_mds`` file system setting +- ``standby_count_wanted`` file system setting + +The Ceph monitor daemons are still responsible for promoting or stopping MDS +according to these settings. The ``mds_autoscaler`` simply adjusts the +number of MDS which are spawned by the orchestrator. + +.. note: There is no CLI or module configurations as of now. Enable or disable + the module to turn on or off. |