Filters and Kubernetes Annotations visibility

[PaulE]

Trying to set up a filter using an annotation value for worker nodes in a K8S cluster .. the node currently has 

$ kubectl get node ag1-sres-workload-01-md-0-85585fc84d-4q6h4 -o yaml
apiVersion: v1
kind: Node
metadata:
  annotations:
    cluster.x-k8s.io/cluster-name: xxx-xxx-xxx
    cluster.x-k8s.io/cluster-namespace: default
    cluster.x-k8s.io/machine: xxx-xxx-xxx-md-0-85585fc84d-4q6h4
    cluster.x-k8s.io/owner-kind: MachineSet
    cluster.x-k8s.io/owner-name: xxx-xxx-xxx-md-0-85585fc84d
    csi.volume.kubernetes.io/nodeid: '{"csi.vsphere.vmware.com":"xxx-xxx-xxx-md-0-85585fc84d-4q6h4"}'
    kubeadm.alpha.kubernetes.io/cri-socket: /var/run/containerd/containerd.sock
    node.alpha.kubernetes.io/ttl: "0"
    volumes.kubernetes.io/controller-managed-attach-detach: "true"
  creationTimestamp: "2023-07-13T08:37:59Z"
  labels:
    beta.kubernetes.io/arch: amd64
    beta.kubernetes.io/instance-type: xxxx.xxx.xxx.xxxx
    beta.kubernetes.io/os: linux
    kubernetes.io/arch: amd64
    kubernetes.io/hostname: xxx-xxx-xxx-md-0-85585fc84d-4q6h4
    kubernetes.io/os: linux
    node.kubernetes.io/instance-type: vsphere-vm.cpu-16.mem-64gb.os-photon
  name: ag1-sres-workload-01-md-0-85585fc84d-4q6h4
  resourceVersion: "51487447"
  uid: d6528bff-d96f-439e-8384-42a826066119

 When I am in Data Explorer and get to Kubernetes nodes:Kubernetes labels I only see the labels and not the annotations. I'd like to be able to filter on the annotation cluster.x-k8s.io/owner-kind: MachineSet which I thought would appear as a label. How do I filter on the annotation ? 

[Iplinsky]

You can use kubectl with the -o jsonpath option to filter resources based on annotations. For example, to get all nodes with the annotation cluster.x-k8s.io/owner-kind: MachineSet, you can use the following command:

kubectl get nodes -o jsonpath='{.items[?(@.metadata.annotations.cluster\.x-k8s\.io/owner-kind=="MachineSet")].metadata.name}'

This command uses a jsonpath expression to filter the nodes based on the value of the cluster.x-k8s.io/owner-kind annotation.

[PaulE]

Sorry, to clarify, I'm trying to filter in Data Explorer 

[IzabelaRokita]

Hey @PaulE , did you manage to find the solution to your problem? If so, it would be amazing if you've shared it with the rest of the Community! If not, let me know, and I'll look for some further assistance 😊