Improvements in RabbitMQ stack (#280)

* Added RabbitMQ with clustering

* Moved to `rdaneel` base repo on Docker hub

* Wrong tag for `rdaneel/rabbitmq-conf`

* merging @andyshinn and @inabhi9 work

* merging @andyshinn and @inabhi9 work

* erlang cookie moved under environment instead of entrypoint

* added defaul cookie

* Aligned to dockerfile description

* bullets

templates/rabbitmq-3/1/README.md

@@ -0,0 +1,12 @@
+RabbitMQ 3.6 with easy Rancher clustering
+===
+Provides RabbitMQ image that can scale to a cluster.
+
+The following environment variables are passed to confd in order to set up RabbitMQ's configuration file:
+
+* Partition handling: RabbitMQ's cluster handling setting: default set to autoheal
+* Erlang cookie: cookie to allow nodes communication: default set to defaultcookiepleasechange
+* Net ticktime: adjusts the frequency of both tick messages and detection of failures: default set to 60
+* Confd args: additional confd args along with default --backend rancher --prefix /2015-07-25: default set to --interval 5
+
+*Note*: You can pass an alternate `confd` configuration via the `ALTERNATE_CONF` environment variable.

templates/rabbitmq-3/1/docker-compose.yml

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+rabbitmq:
+  image: rdaneel/rabbitmq-conf:0.2.0
+  labels:
+    io.rancher.container.hostname_override: container_name
+    io.rancher.sidekicks: rabbitmq-base,rabbitmq-datavolume
+  volumes_from:
+    - rabbitmq-datavolume
+  environment:
+    - RABBITMQ_NET_TICKTIME=${net_ticktime}
+    - RABBITMQ_CLUSTER_PARTITION_HANDLING=${cluster_partition_handling}
+    - CONFD_ARGS=${confd_args}
+rabbitmq-datavolume:
+  labels:
+    io.rancher.container.hostname_override: container_name
+    io.rancher.container.start_once: true
+  volumes:
+    - /etc/rabbitmq
+    - /opt/rancher/bin
+  entrypoint: /bin/true
+  image: rabbitmq:3.6-management
+rabbitmq-base:
+  labels:
+    io.rancher.container.hostname_override: container_name
+  image: rabbitmq:3.6-management
+  restart: always
+  volumes_from:
+    - rabbitmq-datavolume
+  net: "container:rabbitmq"
+  entrypoint:
+    - /opt/rancher/bin/run.sh
+  environment:
+    - RABBITMQ_ERLANG_COOKIE=${erlang_cookie}
+

templates/rabbitmq-3/1/rancher-compose.yml

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+.catalog:
+  name: "Rabbit MQ"
+  version: "0.2.0"
+  decription: A reliable, distributed messaging broker
+  questions: 
+    - variable: "erlang_cookie"
+      description: "Erlang cookie required for auth"
+      label: "Erlang cookie:"
+      required: true
+      default: defaultcookiepleasechange
+      type: "string"
+    - variable: "cluster_partition_handling"
+      label: "Partition Handling:"
+      description: "Cluster partition handling mode"
+      required: true
+      type: "enum"
+      default: autoheal
+      options:
+        - autoheal
+        - ignore
+        - pause_minority
+    - variable: "net_ticktime"
+      description: "Rabbitmq net ticktime setting"
+      label: "Net ticktime:"
+      required: false
+      type: "int"
+      default: 60
+    - variable: "confd_args"
+      description: "Confd additional args"
+      label: "Confd args"
+      required: false
+      type: "string"
+      default: --interval 5
+
+rabbitmq:
+  metadata:
+    rabbitmq:
+      config:
+       node.name: "$${HOSTNAME}"

templates/rabbitmq-3/config.yml

@@ -1,5 +1,5 @@
-name: RabbitMQ 3.6.1
+name: RabbitMQ 3.6
 description: |
   Robust messaging for applications 
-version: 0.1.0
+version: 0.2.0
 category: Message queues