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g
glamorous-printer-66548
09/22/2018, 6:42 AMis it possible to define some custom resource cleanup hooks or create sort of a wrapper which is able to do that? I have a k8s statefulset and would like to delete the PVCs of that statefulset after it’s being destroyed.
c
creamy-potato-29402
09/22/2018, 6:42 AMNot right now, but you’re right that particular thing is pretty annoying.
I’ve thought about allowing users to specify it by adding annotations, for example.
I’d love to hear other ideas.
One problem is that imperative operations like “delete this” are not exposed to the language host, and it’s not clear they should be.
g
glamorous-printer-66548
09/22/2018, 6:44 AMannotations to the k8s resource?
c
creamy-potato-29402
09/22/2018, 6:44 AMyeah
like
"<http://pulumi.io/strict-delete|pulumi.io/strict-delete>": "true"g
glamorous-printer-66548
09/22/2018, 6:45 AMI see
c
creamy-potato-29402
09/22/2018, 6:45 AMthis particular issue of
StatefulSetPersistentVolumeAnd we don’t really tell the user what’s happening, currently. It just is something you have to figure out.
Not a good UX.
g
glamorous-printer-66548
09/22/2018, 6:47 AMWhat I had in mind is some sort of generic resource on_destroy hook in which i can some execute an arbitrary function, e.g. in my case
execSync('kubectl delete pvc -l='some=label'')c
creamy-potato-29402
09/22/2018, 6:47 AMah
hmm yeah
We are already planning on having things like “strict pods” Pulumi will consider successful if and only if none of the containers are crashing
So it might make sense to just wrap that into the definition of
StrictStatefulSetthat could work too.
g
glamorous-printer-66548
09/22/2018, 6:51 AMI see
c
creamy-potato-29402
09/22/2018, 6:51 AMThe other option is, we could just decide to always delete the underlying PVC.
I’m actually not 100% sure I understand why k8s doesn’t do it.
data safety I guess.
g
glamorous-printer-66548
09/22/2018, 6:52 AMIs there any workaround I could use for now?
c
creamy-potato-29402
09/22/2018, 6:52 AMHmmm.
g
glamorous-printer-66548
09/22/2018, 6:52 AMYeah I think actually k8s should introduce something similar to ReclaimPolicy on the statefulset itself.
c
creamy-potato-29402
09/22/2018, 6:53 AMThere are ways to do stuff after creation and update, but not delete, I think. @big-piano-35669 @white-balloon-205 do you have ideas here?
@glamorous-printer-66548 we could also have
StrictStatefulSetStatefulSetReclaimPolicyThat is not a crazy idea.
👍 1
Filed a bug.
My personal favorites are #2 and #3.