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  $ kubectl patch configmap api01-configmap -n default -p '{"data":{"DATABASE_PORT":"5444"}}'
  configmap/api01-configmap patched
  $ kubectl get cm -n default -o yaml api01-configmap
  apiVersion: v1
  data:
    DATABASE_HOST: api01.ybdb.io
    DATABASE_NAME: api01
    DATABASE_PORT: "5444"
  kind: ConfigMap
  metadata:
    creationTimestamp: "2024-05-22T10:06:39Z"
    name: api01-configmap
    namespace: default
    resourceVersion: "67651"
    uid: 2d49a0ea-6910-420c-b2bf-00e42e6c08d7
  $ kubectl patch configmap api01-configmap -n default -p '{"data":{"DATABASE_PORT":"5444"}}' -o yaml
  apiVersion: v1
  data:
    DATABASE_HOST: api01.ybdb.io
    DATABASE_NAME: api01
    DATABASE_PORT: "5444"
  kind: ConfigMap
  metadata:
    creationTimestamp: "2024-05-22T10:47:41Z"
    name: api01-configmap
    namespace: default
    resourceVersion: "69416"
    uid: a303bd0e-7f61-49c0-b671-06649ecdf999
  if [ "$action" == "add" ]; then
    echo "Action: $action"
    echo "Action: $action" >> update_cm.log
    while IFS= read -r cm; do
      echo "Updating ConfigMap: $cm"
      echo "Updating ConfigMap: $cm" >> update_cm.log
      kubectl patch configmap "$cm" -n "$NAMESPACE" -p $DATA >> patch.log 2>&1
    done < "$CONFIGMAP_FILE"
    echo "Invalid action, please specify add".
    exit 1
  echo "----------------------------" >> update_cm.log