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Merge pull request #41207 from paulreece42/wip-doc-balancer-options

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doc: added doc on more throttling options for the PG balancer module

Reviewed-by: Kefu Chai <kchai@redhat.com>
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Kefu Chai 2021-05-11 12:04:49 +08:00 committed by GitHub
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doc/rados/operations/balancer.rst
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@ -44,6 +44,34 @@ be moved) is below a threshold of (by default) 5%. The
ceph config set mgr mgr/balancer/max_misplaced .07 # 7%
Set the number of seconds to sleep in between runs of the automatic balancer::
ceph config set mgr mgr/balancer/sleep_interval 60
Set the time of day to begin automatic balancing in HHMM format::
ceph config set mgr mgr/balancer/begin_time 0000
Set the time of day to finish automatic balancing in HHMM format::
ceph config set mgr mgr/balancer/end_time 2400
Restrict automatic balancing to this day of the week or later.
Uses the same conventions as crontab, 0 or 7 is Sunday, 1 is Monday, and so on::
ceph config set mgr mgr/balancer/begin_weekday 0
Restrict automatic balancing to this day of the week or earlier.
Uses the same conventions as crontab, 0 or 7 is Sunday, 1 is Monday, and so on::
ceph config set mgr mgr/balancer/end_weekday 7
Pool IDs to which the automatic balancing will be limited.
The default for this is an empty string, meaning all pools will be balanced.
The numeric pool IDs can be gotten with the :command:`ceph osd pool ls detail` command::
ceph config set mgr mgr/balancer/pool_ids 1,2,3
Modes
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@ -136,3 +164,4 @@ The quality of the distribution that would result after executing a plan can be
Assuming the plan is expected to improve the distribution (i.e., it has a lower score than the current cluster state), the user can execute that plan with::
ceph balancer execute <plan-name>