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Feature #17604

closed

MDSMonitor: raise health warning when there are no standbys but there should be

Added by John Spray over 7 years ago. Updated about 7 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Patrick Donnelly
Category:
Administration/Usability
Target version:
-
% Done:

0%

Source:
other
Tags:
Backport:
Reviewed:
Affected Versions:
Component(FS):
MDSMonitor
Labels (FS):
Pull request ID:

Description

We could have a per-filesystem setting for how many standbys it wants to be available. Then if the available set of standbys doesn't satisfy that, raise a health warning.

By default this setting would be zero (i.e. if you just start one MDS ever, that's OK, no health warning), but we could auto-bump it to 1 if they ever ran a standby. That way, if a user started a typical 2-node system, and their standby died, we would raise a health warning instead of being silent.

If anyone wants to silence the health warning they can always set this back down to zero.

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