Hi! The app label itself is used by Flink internally for a different purpose so it’s overriden. This is completely expected.
I think it would be better to use some other label :) Cheers, Gyula On Thu, 19 Jan 2023 at 19:02, Andrew Otto <o...@wikimedia.org> wrote: > Hello! > > I'm seeing an unexpected label value assignment happening, and I'm not > sure how it's happening. It is possible it is in my own helm charts and > templates somewhere, but I'm not seeing it, so I'm beginning to think this > is happening in the FlinkDeployment CRD in the operator code somewhere. > > I'm using FlinkDeployment podTemplate > <https://nightlies.apache.org/flink/flink-kubernetes-operator-docs-main/docs/custom-resource/pod-template/> > to add an 'app' label: > > podTemplate: > apiVersion: v1 > kind: Pod > metadata: > labels: > app: flink-app > release: flink-example > ... > > I also have this app label set in the FlinkDeployment labels: > > kind: FlinkDeployment > metadata: > name: flink-app-flink-example > labels: > app: flink-app > chart: flink-app-0.1.1 > release: flink-example > > Since I've set app: flink-app in the podTemplate, I would expect all pods > to get this label. The FlinkDeployment resource has this label value as > expected. However, I see that in the pods, as well as the Deployment > that are created by FlinkDeployment: > > *$ kubectl -n flink-app0 describe deployments flink-app-flink-example* > ... > Name: flink-app-flink-example > Namespace: flink-app0 > CreationTimestamp: Thu, 19 Jan 2023 12:42:05 -0500 > Labels: app=flink-app-flink-example > component=jobmanager > ... > > Pod Template: > Labels: app=flink-app-flink-example > component=jobmanager > release=flink-example > ... > > > *$ kubectl -n flink-app0 describe pod > flink-app-flink-example-d974cb595-788ch* > ... > Labels: app=flink-app-flink-example > component=jobmanager > pod-template-hash=d974cb595 > release=flink-example > ... > > > I'd expect the app label to be 'flink-app' for at least the Deployment > PodTemplate and the Pod, if not the Deployment itself too. > > Something is overriding the app label in podTemplate, and I don't think > it's my chart or installation. I looked in flink-kubernetes-operator code > and I didn't find where this was happening either. I am not setting e.g. > kubernetes.jobmanager.labels > <https://nightlies.apache.org/flink/flink-docs-release-1.15/docs/deployment/config/#kubernetes-jobmanager-labels> > . > > Is this expected? > > Thank you! > > -Andrew Otto > Wikimedia Foundation > > > > > >
