Labeling default namespaces, pods, and deployment templates

[KyleKotowick]

Terraform version, Kubernetes provider version and Kubernetes version

Terraform version: 1.9.5
Kubernetes Provider version: 2.32.0
Kubernetes version: 1.29.7

Question

I need to apply labels to the default namespace (kube-system), pods, and deployment templates that are automatically created for DNS in an Azure AKS cluster.

Through kubectl, I would do this like so:

kubectl label ns kube-system mylabel=myvalue
kubectl label pods -n kube-system coredns-... mylabel=myvalue
kubectl -n kube-system patch deployment coredns --patch '{"spec": {"template": {"metadata": {"labels": {"mylabel": "myvalue"}}}}}'

While these modifications can be done to new namespaces/pods/deployments created through Terraform resources, I cannot find a way to make these changes to existing default namespaces/pods/deployments. Is this possible? Preferably, a solution would avoid import blocks so that other existing configuration options aren't overwritten/deleted when the imported resource is applied.

[alexsomesan]

@KyleKotowick Have you had a look at the kubernetes_labels resource? I believe this is what you are looking for.