How can I find out if any k8s resources are using a specific ConfigMap?

user_955125 0
Viewed 236

I am on a GCP k8s cluster. I want to be sure that no pods or other kubernetes resources are using a particular ConfigMap first, before deleting the ConfigMap. Is there a kubectl command that I can use to check what is using a ConfigMap?

kubernetes google-cloud-platform
1 Answers

You could export all your resources and grep for the config map name.

You can use this script to export all selected resources (select resources in the RESOURCES category)

NAMESPACE="your_namespace"
RESOURCES="configmap secret daemonset deployment service"

for resource in ${RESOURCES};do
  rsrcs=$(kubectl -n ${NAMESPACE} get -o json ${resource}|jq '.items[].metadata.name'|sed "s/\"//g")
  for r in ${rsrcs};do
    dir="${NAMESPACE}/${resource}"
    mkdir -p "${dir}"
    kubectl -n ${NAMESPACE} get -o yaml ${resource} ${r} > "${dir}/${r}.yaml"
  done
done

Next, you can use grep -nr your_config_map_name your_directory(your name space in this case)

this will show you the files that contain the config map, I.E resources that use it.

user_131016740
Related