[stable/rabbitmq-ha] Add HTTP auth backend (#7140)

* Add HTTP auth backend

* Bump version

* Bump minor version for new feature

* Update Chart.yaml

stable/rabbitmq-ha/Chart.yaml

@@ -1,7 +1,7 @@
 name: rabbitmq-ha
 apiVersion: v1
 appVersion: 3.7.4
-version: 1.7.2
+version: 1.8.0
 description: Highly available RabbitMQ cluster, the open source message broker
   software that implements the Advanced Message Queuing Protocol (AMQP).
 keywords:

stable/rabbitmq-ha/templates/configmap.yaml

@@ -38,6 +38,10 @@ data:
       rabbitmq_auth_mechanism_ssl,
       {{- end }}
 
+      {{- if .Values.rabbitmqAuthHTTP.enabled }}
+      rabbitmq_auth_backend_http,
+      {{- end }}
+
       rabbitmq_consistent_hash_exchange,
       rabbitmq_federation,
       rabbitmq_federation_management,
@@ -73,6 +77,11 @@ data:
     ## Memory-based Flow Control threshold
     vm_memory_high_watermark.absolute = {{ .Values.rabbitmqMemoryHighWatermark }}
 
+    ## Auth HTTP Backend Plugin
+    {{- if .Values.rabbitmqAuthHTTP.enabled }}
+{{ .Values.rabbitmqAuthHTTP.config | indent 4 }}
+    {{- end }}
+
     ## LDAP Plugin
     {{- if .Values.rabbitmqLDAPPlugin.enabled }}
 {{ .Values.rabbitmqLDAPPlugin.config | indent 4 }}

stable/rabbitmq-ha/values.yaml

@@ -59,6 +59,18 @@ rabbitmqAuth:
     # auth_mechanisms.2 = AMQPLAIN
     # auth_mechanisms.3 = EXTERNAL
 
+## Authentication backend
+## Ref: https://github.com/rabbitmq/rabbitmq-auth-backend-http
+rabbitmqAuthHTTP:
+  enabled: false
+
+  config: |
+    # auth_backends.1 = http
+    # auth_http.user_path     = http://some-server/auth/user
+    # auth_http.vhost_path    = http://some-server/auth/vhost
+    # auth_http.resource_path = http://some-server/auth/resource
+    # auth_http.topic_path    = http://some-server/auth/topic
+
 ## LDAP Plugin
 ## Ref: http://www.rabbitmq.com/ldap.html
 rabbitmqLDAPPlugin: