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:

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.

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