Helm: support statsd publishing (#20455)

* Allow statsd publishing from Helm

* Apply suggestions from code review

Co-authored-by: Erik Sundell <erik.i.sundell@gmail.com>

Co-authored-by: Erik Sundell <erik.i.sundell@gmail.com>

chart/templates/configmap-env.yaml

@@ -310,3 +310,6 @@ data:
   LDAP_UID_CONVERSION_REPLACE: {{ .Values.externalAuth.ldap.uid_conversion.replace }}
   {{- end }}
   {{- end }}
+  {{- with .Values.mastodon.metrics.statsd.address }}
+  STATSD_ADDR: {{ . }}
+  {{- end }}

chart/values.yaml

@@ -101,6 +101,11 @@ mastodon:
   web:
     port: 3000
 
+  metrics:
+    statsd:
+      # Enable statsd publishing via STATSD_ADDR environment variable
+      address: ""
+
 ingress:
   enabled: true
   annotations: