On 2022-11-29 00:31, Reid Wahl wrote:
On Mon, Nov 28, 2022 at 8:21 PM Madison Kelly <mke...@alteeve.com> wrote:This question builds on questions I was talking to kgaillot on IRC.I am try to prevent a resource from being allowed to migrate to or start on a given node. When I asked about this, Ken talked about node attributes, which I've been trying to implement. To try to figure this out / test this, I setup an attribute against a resource called 'srv01-sql' called 'drbd-fenced_srv01-psql' that sets a location constraint of -INFINITY. I had the resource running on 'mk-a01n01' and then set 'drbd-fenced_srv01-psql=1' to trigger the constraint against 'mk-a01n02'. I verified this was set, then tried migrating it, and it happily migrated. Clearly I am missing something. :) ==== [root@mk-a01n01 ~]# crm_attribute --type nodes --node mk-a01n02 --name drbd-fenced_srv01-sql --query scope=nodes name=drbd-fenced_srv01-sql value=1 [root@mk-a01n01 ~]# pcs constraint location config Location Constraints: Resource: srv01-sql Enabled on: Node: mk-a01n02 (score:100) Node: mk-a01n01 (score:200) Constraint: location-srv01-sql Rule: score=-INFINITY _expression_: drbd-fenced_srv01-sql eq 0 Resource: srv02-web Enabled on: Node: mk-a01n02 (score:100) Node: mk-a01n01 (score:200) [root@mk-a01n01 ~]# crm_attribute --type nodes --node mk-a01n02 --name drbd-fenced_srv01-sql --query scope=nodes name=drbd-fenced_srv01-sql value=1 [root@mk-a01n01 ~]# pcs resource status srv01-sql * srv01-sql (ocf::alteeve:server): Started mk-a01n01 [root@mk-a01n01 ~]# pcs constraint location srv01-sql prefers mk-a01n02=200 mk-a01n01=100 [root@mk-a01n01 ~]# pcs resource status srv01-sql * srv01-sql (ocf::alteeve:server): Migrating mk-a01n01 [root@mk-a01n01 ~]# pcs resource status srv01-sql * srv01-sql (ocf::alteeve:server): Started mk-a01n02 ==== I feel like this shouldn't be so complicated, so I am likely over-thinking this, or missing something obvious... -- Madison Kelly Alteeve's Niche! Chief Technical Officer c: +1-647-471-0951 https://alteeve.com/The configured rule prevents srv01-sql from running on a node where the drbd-fenced_srv01-sql attribute is set to 0. It looks like it's set to 1. Maybe I'm misunderstanding though -- if I am, can you help clarify and send the CIB so that I can mess around with it?
Excuse me one second...
"AAAAAAAAAARG!!!!!!!!!!"
OK, now I am better. Thank you, that was the problem. :)
-- Madison Kelly Alteeve's Niche! Chief Technical Officer c: +1-647-471-0951 https://alteeve.com/
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