kubernetes_use_configmap (#887)

* kubernetes_use_configmap

* Update manifests/postgresql-operator-default-configuration.yaml

Co-Authored-By: Felix Kunde <felix-kunde@gmx.de>

* Update manifests/configmap.yaml

Co-Authored-By: Felix Kunde <felix-kunde@gmx.de>

* Update charts/postgres-operator/values.yaml

Co-Authored-By: Felix Kunde <felix-kunde@gmx.de>

* go.fmt

Co-authored-by: Felix Kunde <felix-kunde@gmx.de>

charts/postgres-operator/crds/operatorconfigurations.yaml

@@ -66,6 +66,8 @@ spec:
               type: boolean
             etcd_host:
               type: string
+            kubernetes_use_configmaps:
+              type: boolean
             max_instances:
               type: integer
               minimum: -1  # -1 = disabled

charts/postgres-operator/values-crd.yaml

@@ -23,6 +23,8 @@ configGeneral:
   enable_shm_volume: true
   # etcd connection string for Patroni. Empty uses K8s-native DCS.
   etcd_host: ""
+  # Select if setup uses endpoints (default), or configmaps to manage leader (DCS=k8s)
+  # kubernetes_use_configmaps: false
   # Spilo docker image
   docker_image: registry.opensource.zalan.do/acid/spilo-12:1.6-p2
   # max number of instances in Postgres cluster. -1 = no limit

charts/postgres-operator/values.yaml

@@ -23,6 +23,8 @@ configGeneral:
   enable_shm_volume: "true"
   # etcd connection string for Patroni. Empty uses K8s-native DCS.
   etcd_host: ""
+  # Select if setup uses endpoints (default), or configmaps to manage leader (DCS=k8s)
+  # kubernetes_use_configmaps: "false"
   # Spilo docker image
   docker_image: registry.opensource.zalan.do/acid/spilo-12:1.6-p2
   # max number of instances in Postgres cluster. -1 = no limit