Installing RabbitMQ

Perform the following operations on the controller node.

1. Install rabbitmq-server.

   1	yum -y install rabbitmq-server

   

2. Enable the RabbitMQ service and configure it to start upon system startup.

   1 2	systemctl enable rabbitmq-server.service systemctl start rabbitmq-server.service

3. Add and configure the openstack user.

   1 2	rabbitmqctl add_user openstack PASSWORD rabbitmqctl set_permissions openstack ".*" ".*" ".*"

   

   Replace PASSWORD with the password of the openstack user. 123456 is used as an example. The openstack user password does not support the number sign (#). OpenStack has no requirements on password complexity. You can set a password without special characters. OpenStack only supports the special characters including &=$-_.+!*()

4. Start the rabbitmq-manager plugin.

   1	rabbitmq-plugins enable rabbitmq_management

   

   After the plugin is started, you can access the RabbitMQ service using a browser. Enter http://<controller_IP>:15672 in the address box and enter guest as the user name and password.

5. Modify the default RabbitMQ parameter.
   1. Open the /usr/lib/systemd/system/rabbitmq-server.service file.
   2. Press i to enter the insert mode and add the following content under [Service]:

      1 2	[service] LimitNOFILE=16384

      

   3. Press Esc to exit the insert mode. Type :wq! and press Enter to save the file and exit.
6. Restart the RabbitMQ service.

   1 2	systemctl daemon-reload systemctl restart rabbitmq-server