Validate canary without taking traffic

[Bennett-Lynch]

Hello,

How can I run an analysis against a canary replica set before increasing its traffic weight, when I'm not using traffic routing/traffic management? Is this supported?

Thanks!

[kostis-codefresh]

Yes this is supported

Read the documentation about the difference between setCanaryScale and setWeight

if, for example, you do setCanaryScale = 3, you will have 3 pods that don't get any traffic (setWeight=0)

Then you can run any smoke tests that you want with https://argo-rollouts.readthedocs.io/en/stable/analysis/job/ or https://argo-rollouts.readthedocs.io/en/stable/analysis/web/

[Bennett-Lynch]

Hi @kostis-codefresh. According to the docs:

Setting canary scale is only available when using the canary strategy with a traffic router, since the basic canary needs to control canary scale in order to approximate canary weight.

https://argo-rollouts.readthedocs.io/en/stable/features/canary/#dynamic-canary-scale-with-traffic-routing

My question is: how can I do this (test the canary replica set w/o it receiving traffic) when NOT using a traffic router? I seem to recall @jessesuen mentioning this was possible somewhere but I cannot find it now.