ityaptin / salt-formula-rabbitmq

RabbitMQ messaging system

RabbitMQ is a complete and highly reliable enterprise messaging system based on the emerging AMQP standard.

Sample pillars

Standalone Broker

RabbitMQ as AMQP broker with admin user and vhosts

rabbitmq:
  server:
    enabled: true
    bind:
      address: 0.0.0.0
      port: 5672
    secret_key: rabbit_master_cookie
    admin:
      name: adminuser
      password: pwd
    plugins:
    - amqp_client
    - rabbitmq_management
    virtual_hosts:
    - enabled: true
      host: '/monitor'
      user: 'monitor'
      password: 'password'

RabbitMQ as a Stomp broker

rabbitmq:
  server:
    enabled: true
    secret_key: rabbit_master_cookie
    bind:
      address: 0.0.0.0
      port: 5672
    virtual_hosts:
    - enabled: true
      host: '/monitor'
      user: 'monitor'
      password: 'password'
    plugins:
    - rabbitmq_stomp

RabbitMQ cluster

RabbitMQ as base cluster node

rabbitmq:
  server:
    enabled: true
    bind:
      address: 0.0.0.0
      port: 5672
    secret_key: rabbit_master_cookie
    admin:
      name: adminuser
      password: pwd
  cluster:
    enabled: true
    role: master
    mode: disc
    members:
    - name: openstack1
      host: 10.10.10.212
    - name: openstack2
      host: 10.10.10.213

HA Queues definition

rabbitmq:
  server:
    enabled: true
    ...
    virtual_hosts:
    - enabled: true
      host: '/monitor'
      user: 'monitor'
      password: 'password'
      policies:
      - name: HA
        pattern: '^(?!amq\.).*'
        definition: '{"ha-mode": "all"}'

Usage

Check cluster status, example shows running cluster with 3 nodes: ctl-1, ctl-2, ctl-3

> rabbitmqctl cluster_status

Cluster status of node 'rabbit@ctl-1' ...
[{nodes,[{disc,['rabbit@ctl-1','rabbit@ctl-2','rabbit@ctl-3']}]},
 {running_nodes,['rabbit@ctl-3','rabbit@ctl-2','rabbit@ctl-1']},
 {partitions,[]}]
...done.

Setup management user.

> rabbitmqctl add_vhost vhost
> rabbitmqctl add_user user alive
> rabbitmqctl set_permissions -p vhost user ".*" ".*" ".*"
> rabbitmqctl set_user_tags user management

EPD process is Erlang Port Mapper Daemon. It's a feature of the Erlang runtime that helps Erlang nodes to find each other. It's a pretty tiny thing and doesn't contain much state (other than "what Erlang nodes are running on this system?") so it's not a huge deal for it to still be running. Although it's running as user rabbitmq, it was started automatically by the Erlang VM when we started. We've considered adding "epmd -kill" to our shutdown script - but that would break any other Erlang apps running on the system; it's more "global" than RabbitMQ.

Read more

• http://www.rabbitmq.com/admin-guide.html
• https://github.com/saltstack/salt-contrib/blob/master/states/rabbitmq_plugins.py
• http://docs.saltstack.com/ref/states/all/salt.states.rabbitmq_user.html
• http://stackoverflow.com/questions/14699873/how-to-reset-user-for-rabbitmq-management
• http://www.rabbitmq.com/memory.html

Clustering

• http://www.rabbitmq.com/clustering.html#auto-config
• https://github.com/jesusaurus/hpcs-salt-state/tree/master/rabbitmq
• http://gigisayfan.blogspot.cz/2012/06/rabbit-mq-clustering-python-fabric.html
• http://docwiki.cisco.com/wiki/OpenStack_Havana_Release:_High-Availability_Manual_Deployment_Guide#RabbitMQ_Installation