[FEATURE] Kill only pods which do have more then 1 sibling replica

[WolfspiritM]

We're using chaoskube to kill random pods and also to "balance" our cluster.

We have many microservices that are running with more then one replica however we have a few services that can only run with 1 replica. Our monitoring checks the health of the pods by calling their web endpoint and notify us if the service is down.

It would be nice if chaoskube can be configured to only kill pods that belong to a deploymen/ReplicaSet with more then one other pod. I couldn't find any way to configure that.

As a workaround for now we're going to set a label for that pods to prevent them from being killed.

[linki]

Good idea.

I think that could be added fairly easily here:

chaoskube/chaoskube/chaoskube.go

Line 531 in d1b517d

filteredList = append(filteredList, util.RandomPodSubSlice(pods, 1)...)

by adding something like

if len(pods) <= 1 {
  continue
}

But we would need to write a test case to confirm that.

[MustafaSaber]

Hi 👋, created the PR for this. Would appreciate the feedback!