document configmap variant of inherited_labels (zalando#678)

* document configmap varient of inherited_labels and remove application label from cluster example since we will get application:spilo by default

Author: knan-nrk

charts/postgres-operator/values-crd.yaml

@@ -66,7 +66,7 @@ configKubernetes:
   # list of labels that can be inherited from the cluster manifest
   # inherited_labels:
   # - application
-  # - app
+  # - environment
 
   # timeout for successful migration of master pods from unschedulable node
   # master_pod_move_timeout: 20m

charts/postgres-operator/values.yaml

@@ -62,7 +62,7 @@ configKubernetes:
   # infrastructure_roles_secret_name: postgresql-infrastructure-roles
 
   # list of labels that can be inherited from the cluster manifest
-  # inherited_labels: ""
+  # inherited_labels: application,environment
 
   # timeout for successful migration of master pods from unschedulable node
   # master_pod_move_timeout: 20m

docs/administrator.md

@@ -200,6 +200,18 @@ Postgres cluster, in order to identify its child objects. The typical use case
 is to add labels that identifies the `Pods` created by the operator, in order
 to implement fine-controlled `NetworkPolicies`.
 
+**postgres-operator ConfigMap**
+
+```yaml
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: postgres-operator
+data:
+  inherited_labels: application,environment
+  ...
+```
+
 **OperatorConfiguration**
 
 ```yaml

manifests/complete-postgres-manifest.yaml

@@ -2,6 +2,8 @@ apiVersion: "acid.zalan.do/v1"
 kind: postgresql
 metadata:
   name: acid-test-cluster
+#  labels:
+#    environment: demo
 spec:
   dockerImage: registry.opensource.zalan.do/acid/spilo-11:1.6-p1
   initContainers:

manifests/configmap.yaml

@@ -31,7 +31,7 @@ data:
   enable_teams_api: "false"
   # etcd_host: ""
   # infrastructure_roles_secret_name: postgresql-infrastructure-roles
-  # inherited_labels: ""
+  # inherited_labels: application,environment
   # kube_iam_role: ""
   # log_s3_bucket: ""
   # logical_backup_docker_image: "registry.opensource.zalan.do/acid/logical-backup"

manifests/postgresql-operator-default-configuration.yaml

@@ -27,7 +27,7 @@ configuration:
     # infrastructure_roles_secret_name: ""
     # inherited_labels:
     # - application
-    # - app
+    # - environment
     # node_readiness_label: ""
     oauth_token_secret_name: postgresql-operator
     pdb_name_format: "postgres-{cluster}-pdb"