I would use the 'last_man_standing: 1' + 'wait_for_all: 1'.
When you shoutdown a node gracefully , the quorum is recalculated.
You can check the manpage for explanation.
Best Regards,
Strahil Nikolov
В петък, 25 септември 2020 г., 01:19:09 Гринуич+3, Philippe M Stedman
написа:
Hi,
I was reading through the following votequorum manpage:
https://www.systutorials.com/docs/linux/man/5-votequorum/
and read the following about the allow_downscale feature:
---
allow_downscale: 1
Enables allow downscale (AD) feature (default: 0).
THIS FEATURE IS INCOMPLETE AND CURRENTLY UNSUPPORTED.
The general behaviour of votequorum is to never decrease expected votes or
quorum.
When AD is enabled, both expected votes and quorum are recalculated when a node
leaves the cluster in a clean state (normal corosync shutdown process) down to
configured expected_votes.
---
I am interested in using this option for my cluster to allow hosts to be
gracefully shutdown for maintenance operations for prolonged amounts of time
without adversely affecting quorum for the remaining active hosts in the
cluster. Does anybody know when this feature will be supported?
Thanks,
Phil Stedman
Db2 High Availability Development and Support
Email: pmste...@us.ibm.com
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