[EVENTING] Subscription does not give changing delivery options

[Andrey Stelmashenko]

We are applying knative resources as helm releases. Today I received these changes:

...

name: "model-state"

+ delivery:

+ backoffDelay: PT3S

+ backoffPolicy: exponential

+ retry: 3

subscriber:

...

And received this error:

Error: UPGRADE FAILED: release model-state-subscription failed, and has been rolled back due to atomic being set: cannot patch "model-state" with kind Subscription: admission webhook "validation.webhook.eventing.knative.dev" denied the request: validation failed: Immutable fields changed (-old +new): spec

{v1.SubscriptionSpec}.Delivery:

-: "<nil>"

+: "&{DeadLetterSink:<nil> Retry:0xc0019a2d9c Timeout:<nil> BackoffPolicy:0xc001789d90 BackoffDelay:0xc001789d80}"

How is it possible to change delivery options? Delete and create subscription again?

[Pierangelo Di Pilato]

Hi Andrey,

which version are you using? are you using the latest patch release
available [1]?

The fix is available in 1.3.1, 1.1.3, 1.0.4.
There is an issue with the 1.2 automation, so for 1.2, there is no fix yet.

[1]: https://github.com/knative/eventing/releases

Thanks,

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--

Pierangelo Di Pilato
Software Engineer
Red Hat, Inc
https://www.redhat.com/

[Andrey Stelmashenko]

Thank you. We are still on v0.24.0, need time to evaluate how safe (breaking changes, need of redeploying services, etc.) it is to update.