postgresql: added postgresConfig value to specify runtime config parameters (#3780)

stable/postgresql/Chart.yaml

@@ -1,5 +1,5 @@
 name: postgresql
-version: 0.8.14
+version: 0.9.0
 description: Object-relational database management system (ORDBMS) with an emphasis on extensibility and on standards-compliance.
 keywords:
 - postgresql

stable/postgresql/README.md

@@ -53,6 +53,7 @@ The following tables lists the configurable parameters of the PostgreSQL chart a
 | `postgresPassword`         | Password for the new user.                      | random 10 characters                                       |
 | `postgresDatabase`         | Name for new database to create.                | `postgres`                                                 |
 | `postgresInitdbArgs`       | Initdb Arguments                                | `nil`                                                      |
+| `postgresConfig`           | Runtime Config Parameters                       | `nil`                                                      |
 | `persistence.enabled`      | Use a PVC to persist data                       | `true`                                                     |
 | `persistence.existingClaim`| Provide an existing PersistentVolumeClaim       | `nil`                                                      |
 | `persistence.storageClass` | Storage class of backing PVC                    | `nil` (uses alpha storage class annotation)                |

stable/postgresql/templates/deployment.yaml

@@ -29,6 +29,11 @@ spec:
       - name: {{ template "postgresql.fullname" . }}
         image: "{{ .Values.image }}:{{ .Values.imageTag }}"
         imagePullPolicy: {{ default "" .Values.imagePullPolicy | quote }}
+        args:
+          {{- range $key, $value := default dict .Values.postgresConfig }}
+          - -c
+          - '{{ $key | snakecase }}={{ $value }}'
+          {{- end }}
         env:
         - name: POSTGRES_USER
           value: {{ default "postgres" .Values.postgresUser | quote }}

stable/postgresql/values.yaml

@@ -31,6 +31,11 @@ imageTag: "9.6.2"
 ## ref: https://www.postgresql.org/docs/current/static/app-initdb.html
 # postgresInitdbArgs:
 
+## Specify runtime config parameters as a dict, using camelCase, e.g.
+## {"sharedBuffers": "500MB"}
+## ref: https://www.postgresql.org/docs/current/static/runtime-config.html
+# postgresConfig:
+
 ## Persist data to a persitent volume
 persistence:
   enabled: true