allow pgbouncer replicas to be configurable

chart/templates/pgbouncer/pgbouncer-deployment.yaml

@@ -38,7 +38,7 @@ metadata:
 {{ toYaml . | indent 4 }}
 {{- end }}
 spec:
-  replicas: 1
+  replicas: {{ .Values.pgbouncer.replicas | default "1" }}
   {{- if $revisionHistoryLimit }}
   revisionHistoryLimit: {{ $revisionHistoryLimit }}
   {{- end }}

chart/values.schema.json

@@ -4161,6 +4161,11 @@
                     "x-docsSection": "Common",
                     "default": false
                 },
+                "replicas": {
+                    "description": "Number of PgBouncer replicas to run in Deployment.",
+                    "type": "integer",
+                    "default": 1
+                },
                 "revisionHistoryLimit": {
                     "description": "Number of old replicasets to retain.",
                     "type": [

chart/values.yaml

@@ -1381,6 +1381,8 @@ statsd:
 pgbouncer:
   # Enable PgBouncer
   enabled: false
+  # Number of PgBouncer replicas to run in Deployment
+  replicas: 1
   # Max number of old replicasets to retain
   revisionHistoryLimit: ~
   # Command to use for PgBouncer(templated).

tests/charts/test_pgbouncer.py

@@ -307,6 +307,18 @@ def test_should_add_extra_volume_and_extra_volume_mount(self):
             "spec.template.spec.containers[0].volumeMounts[*].name", docs[0]
         )
 
+    def test_pgbouncer_replicas_are_configurable(self):
+        docs = render_chart(
+            values={
+                "pgbouncer": {
+                    "enabled": True,
+                    "replicas": 2,
+                },
+            },
+            show_only=["templates/pgbouncer/pgbouncer-deployment.yaml"],
+        )
+        assert 2 == jmespath.search("spec.replicas", docs[0])
+
 
 class TestPgbouncerConfig:
     def test_config_not_created_by_default(self):