Cleanup config examples (#1151)

* post polishing for latest PRs

* update travis and go modules

* make deprecation comments in structs less confusing

* have separate pod priority class es for operator and database pods

charts/postgres-operator/crds/operatorconfigurations.yaml

@@ -263,6 +263,11 @@ spec:
                   type: boolean
                 enable_replica_load_balancer:
                   type: boolean
+                external_traffic_policy:
+                  type: string
+                  enum:
+                    - "Cluster"
+                    - "Local"
                 master_dns_name_format:
                   type: string
                 replica_dns_name_format:

charts/postgres-operator/templates/configmap.yaml

@@ -9,6 +9,9 @@ metadata:
     app.kubernetes.io/managed-by: {{ .Release.Service }}
     app.kubernetes.io/instance: {{ .Release.Name }}
 data:
+  {{- if .Values.podPriorityClassName }}
+  pod_priority_class_name: {{ .Values.podPriorityClassName }}
+  {{- end }}
   pod_service_account_name: {{ include "postgres-pod.serviceAccountName" . }}
 {{ toYaml .Values.configGeneral | indent 2 }}
 {{ toYaml .Values.configUsers | indent 2 }}

charts/postgres-operator/templates/operatorconfiguration.yaml

@@ -13,6 +13,9 @@ configuration:
   users:
 {{ toYaml .Values.configUsers | indent 4 }}
   kubernetes:
+    {{- if .Values.podPriorityClassName }}
+    pod_priority_class_name: {{ .Values.podPriorityClassName }}
+    {{- end }}
     pod_service_account_name: {{ include "postgres-pod.serviceAccountName" . }}
     oauth_token_secret_name: {{ template "postgres-operator.fullname" . }}
 {{ toYaml .Values.configKubernetes | indent 4 }}

charts/postgres-operator/templates/postgres-pod-priority-class.yaml

@@ -0,0 +1,15 @@
+{{- if .Values.podPriorityClassName }}
+apiVersion: scheduling.k8s.io/v1
+description: 'Use only for databases controlled by Postgres operator'
+kind: PriorityClass
+metadata:
+  labels:
+    app.kubernetes.io/name: {{ template "postgres-operator.name" . }}
+    helm.sh/chart: {{ template "postgres-operator.chart" . }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+  name: {{ .Values.podPriorityClassName }}
+preemptionPolicy: PreemptLowerPriority
+globalDefault: false
+value: 1000000
+{{- end }}

charts/postgres-operator/values-crd.yaml

@@ -183,6 +183,8 @@ configLoadBalancer:
   enable_master_load_balancer: false
   # toggles service type load balancer pointing to the replica pod of the cluster
   enable_replica_load_balancer: false
+  # define external traffic policy for the load balancer
+  external_traffic_policy: "Cluster"
   # defines the DNS name string template for the master load balancer cluster
   master_dns_name_format: "{cluster}.{team}.{hostedzone}"
   # defines the DNS name string template for the replica load balancer cluster
@@ -318,8 +320,12 @@ podServiceAccount:
   # If not set a name is generated using the fullname template and "-pod" suffix
   name: "postgres-pod"
 
+# priority class for operator pod
 priorityClassName: ""
 
+# priority class for database pods
+podPriorityClassName: ""
+
 resources:
   limits:
     cpu: 500m

charts/postgres-operator/values.yaml

@@ -172,6 +172,8 @@ configLoadBalancer:
   enable_master_load_balancer: "false"
   # toggles service type load balancer pointing to the replica pod of the cluster
   enable_replica_load_balancer: "false"
+  # define external traffic policy for the load balancer
+  external_traffic_policy: "Cluster"
   # defines the DNS name string template for the master load balancer cluster
   master_dns_name_format: '{cluster}.{team}.{hostedzone}'
   # defines the DNS name string template for the replica load balancer cluster
@@ -310,8 +312,12 @@ podServiceAccount:
   # If not set a name is generated using the fullname template and "-pod" suffix
   name: "postgres-pod"
 
+# priority class for operator pod
 priorityClassName: ""
 
+# priority class for database pods
+podPriorityClassName: ""
+
 resources:
   limits:
     cpu: 500m