I am exploring a highly available, multi site, multi network rabbitmq server for what it does best.
and update it with the details of all 3 nodes
Run the following on ub1
Change back the permission on the cookie to be accessible only by the owner. Run the following on ub2,ub3.
Again on ub2,ub3
Run the following on ub2,ub3 to confirm that the clustering is working.
3 VMs
ub1
ub2
ub3
on KVM+kimchi virtualization setup.
sudo vim /etc/hosts |
192.x.y.z ub1 192.x.y.z ub2 192.x.y.z ub3
Install and Setup RabbitMQ on all
Copy paste the following on all 3 nodes.
sudo apt update sudo apt upgrade sudo apt install rabbitmq-server -y
sudo systemctl start rabbitmq-server
sudo systemctl enable rabbitmq-server
Plugins
sudo rabbitmq-plugins enable rabbitmq_management
sudo systemctl restart rabbitmq-server
Firewall
sudo ufw allow ssh
sudo ufw enable
sudo ufw allow 5672,15672,4369,25672/tcp
sudo ufw status
Clustering
So the erlang cookie used by rabbitmq should be same on all hosts/nodes. We can copy it from node1 to others via scp but we need to change the permissions on other nodes for this cookie so that you don't get permission denied error. Run the below command on ub2 & ub3.
sudo chmod 777 /var/lib/rabbitmq/.erlang.cookie
Run the following on ub1
scp /var/lib/rabbitmq/.erlang.cookie root@ub2:/var/lib/rabbitmq/ scp /var/lib/rabbitmq/.erlang.cookie root@ub3:/var/lib/rabbitmq/
Change back the permission on the cookie to be accessible only by the owner. Run the following on ub2,ub3.
sudo chmod 600 /var/lib/rabbitmq/.erlang.cookie
sudo systemctl restart rabbitmq-server sudo rabbitmqctl stop_app
sudo rabbitmqctl join_cluster rabbit@ub1 sudo rabbitmqctl start_app
User Setup
Run the following on ub1. This will create an admin user and deletes the guest user.sudo rabbitmqctl add_user admin admin sudo rabbitmqctl set_user_tags admin administrator sudo rabbitmqctl set_permissions -p / admin ".*" ".*" ".*" sudo rabbitmqctl delete_user guest
Run the following on ub2,ub3 to confirm that the clustering is working.
sudo rabbitmqctl cluster_status sudo rabbitmqctl list_users
HA[Queue Mirroring]
sudo rabbitmqctl set_policy ha-all "." '{"ha-mode":"all"}'
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