Add extraArgs to postgres helm chart

Author: tkatrichenko

cluster/helm/splice-postgres/templates/postgres.yaml

@@ -38,7 +38,14 @@ spec:
       - name: {{ .Release.Name }}
         image: postgres:14
         imagePullPolicy: IfNotPresent
-        args: ["-c", "max_connections={{ .Values.db.maxConnections }}", "-c", "max_wal_size={{ .Values.db.maxWalSize }}"]
+        args:
+          - "-c"
+          - "max_connections={{ .Values.db.maxConnections }}"
+          - "-c"
+          - "max_wal_size={{ .Values.db.maxWalSize }}"
+          {{- with .Values.extraArgs }}
+          {{- toYaml . | nindent 10 }}
+          {{- end }}
         env:
         - name: POSTGRES_PASSWORD
           valueFrom:

cluster/helm/splice-postgres/values-template.yaml

@@ -21,6 +21,13 @@ db:
   maxConnections: 300
   maxWalSize: 2GB
 
+# Extra PostgreSQL command-line arguments (optional)
+# extraArgs:
+#   - "-c"
+#   - "shared_buffers=256MB"
+#   - "-c"
+#   - "wal_buffers=-1"
+
 persistence:
   secretName: "postgres-secrets"
 # k8s affinity for all deployed pods (optional)