Kubernetes version (use kubectl version):

Client Version: version.Info{Major:"1", Minor:"3", GitVersion:"v1.3.5", GitCommit:"b0deb2eb8f4037421077f77cb163dbb4c0a2a9f5", GitTreeState:"clean", BuildDate:"2016-08-11T20:29:08Z", GoVersion:"go1.6.2", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"3", GitVersion:"v1.3.4", GitCommit:"dd6b458ef8dbf24aff55795baa68f83383c9b3a9", GitTreeState:"clean", BuildDate:"2016-08-01T16:38:31Z", GoVersion:"go1.6.2", Compiler:"gc", Platform:"linux/amd64"}

Environment:

• Cloud provider or hardware configuration: aws ec2

What happened:
I only need one replica for my application, but I also want to have zero downtime deployment. I have written following spec:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: xxx
spec:
  replicas: 1
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 0
      maxSurge: 1

Deployment works as expected:

1. there is always 1 pod available
2. when deploy is triggered, then the second pod is created
3. first pod is available, second is booting (ready=false)
4. when the second pod is ready, then the first pod is terminated

Whenever I execute kubectl rollout status deployment/xxx it always prints deployment xxxx successfully rolled out. I've even executed this command in loop, triggered deployment and saw that value never changed.

What you expected to happen:
kubectl rollout status deployment/xxx should work as documentation states: print changes and wait until rollout is completed.

How to reproduce it (as minimally and precisely as possible):

Create deployment with spec like above.

Anything else do we need to know:

Maybe I don't understand this well. When is rollout considered successful in my case? I would think that the moment new pod changes into ready status.

I've also followed docs about deployment status and printed in loop all variables checked by rollout status with command:

watch ku --namespace uxpin-kubernetes-probes get deployment/uxpin-apps -o jsonpath="'{.status.observedGeneration}>={.metadata.generation} && {.status.updatedReplicas}=={.spec.replicas}'"

And indeed conditions are true during whole rollout.

The reason I need rollout status is because I want to send notification about completed deployment. If there is better way to do this please correct me.