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Bug #45266
closedfollower monitors can grow beyond memory target
Status:
Resolved
Priority:
High
Assignee:
Category:
Performance/Resource Usage
Target version:
-
% Done:
0%
Source:
Tags:
Backport:
octopus, nautilus
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(RADOS):
Monitor
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
The leader monitor periordically tells tcmalloc to release memory back to the OS, but follower monitors do not. This can result in follower monitors using more memory than their memory target, and potentially getting oom killed.
A workaround is to reset the mon_memory_target config option, which will cause all monitors to ask tcmalloc to release its free memory.
Alternately, mon_memory_autotune can be disabled.
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