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Rabbitmq standalone and cluster installation

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  • Install rabbitMQ in the VM. Following are the installations steps.
    ·         Verify if the earlang package is installed

  • rpm -q erlang-solutions-1.0-1.nonarch.rpm

  • wget http://packages.erlang-solutions.com/erlang-solutions-1.0-1.noarch.rpm

  • sudo wget http://packages.erlang-solutions.com/erlang-solutions-1.0-1.noarch.rpm

  • sudo yum update NOTE : use command "yum --releasever=6.7 update" if you want a specific version.

  • su -c 'yum list rabbitmq'   Or use

  • yum install rabbitmq-server

  • sudo rpm -Uvh http://www.rabbitmq.com/releases/rabbitmq-server/v3.6.0/rabbitmq-server-3.6.0-1.noarch.rpm

  • sudo /etc/init.d/rabbitmq-server start·

  • Uncomment the loopback line in security section of rabbitMq.config :  {loopback_users, []}ss

  • rabbitmq-plugins enable rabbitmq_management·

  • Configure port firewall rule should be in place to accept the tcp connection.

  • Use following command : lokkit –p <rabbitMQ port>:tcp , lokkit –p <rabbitMQ management port>:tcp·

  • Default guest/guest account should be disabled. Change the user and user permissions using following commands :

  • Note : password should be 16 characters , no special characters allowed and should be generated by keypass.

  • rabbitmqctl set_user_tags <username> administrator      rabbitmqctl change_password guest guest123

  • Disable the guest user by changing the password once the created user is tested.

  • rabbitmqctl add_user <username> <password>

  • Avoid use of RabbitMQ default port and configure to use our own choice. Edit the port in rabbitMq.config file. uncomment following line and edit the port : {tcp_listeners, [<rabbitMQ port>]} and {listener, [{port,    <rabbitMQ management port>}.

  • Install management console of rabbitmq using following command :

  • Copy  /usr/share/doc/rabbitmq-server/ rabbitmq.config.example in /etc/rabbitmq folder and rename it as rabbitmq.config. Edit the permissions for the file to: 666

  • sudo chkconfig rabbitmq-server on

  • sudo rpm --import http://www.rabbitmq.com/rabbitmq-signing-key-public.asc
    for rabbitmq 3.6.*  ,require socat dependency:
    steps : sudo yum install epel-release
    sudo yum install socat

  • sudo yum install -y erlang-18.2-1.el6

  • sudo rpm -Uvh erlang-solutions-1.0-1.noarch.rpm

  • Install erlang package:

  • dowload the erlang package from web site:

  • Restart the rabbitmq server using commnad : sudo service rabbitmq_server restart.



  • Make the following changes on rabbitmq console:  Got to Admin > click on user and click on set permissions. Check the permissions of the user. It should be same as user guest.

  • Try to create new queue to check it is working fine.


 

Create RabbitMQ High Availability Cluster:


1) Stop RabbitMQ in Master and slave nodes. Ensure service is stopped properly.

/etc/init.d/rabbitmq-server stop

2) Copy the file below to all nodes from the master. This cookie file needs to be the same across all nodes.

$ sudo cat /var/lib/rabbitmq/.erlang.cookie

3) Make sure you start all nodes after copying the cookie file from the master.

Start RabbitMQ in master and all nodes.

$ /etc/init.d/rabbitmq-server start

4) Then run the following commands in all the nodes, except the master node:

$ rabbitmqctl stop_app$ rabbitmqctl reset$ rabbitmqctl start_app

5) Now, run the following commands in the master node:

$ rabbitmqctl stop_app$ rabbitmqctl reset

6) Do not start the app yet.

Open port 4369 and 25672: lokkit -p 4369:tcp -p 25672:tcp

Stop the iptables on both master and slaves.

The following command is executed to join the slaves to the cluster:

$ rabbitmqctl join_cluster rabbit@slave1 rabbit@slave2

Update slave1 and slave2 with the hostnames/IP address of the slave nodes. You can add as many slave nodes as needed in the cluster.

7) Start master app in master machine

$ rabbitmqctl start_app

8) Check the cluster status from any node in the cluster:

$ rabbitmqctl cluster_status

9) In rabbitmq management console check if you can login with previous user and have all the previous settings in place.

If not create users by following command:

rabbitmqctl add_user <username> <password>

give admin rights:

rabbitmqctl set_user_tags <username> administrator

rabbitmqctl add_vhost /

Give vhost rights by:

rabbitmqctl set_permissions -p / <username> ".*" ".*" ".*"

10) Create ha mirroring by:

rabbitmqctl set_policy ha-all "" '{"ha-mode":"all","ha-sync-mode":"automatic"}'This will mirror all queues.

11) Now start iptables. You will have created rabbitmq HA cluster.
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