RabbitMQ already has excellent documentation at: http://www.rabbitmq.com/clustering.html
But this will be a bit more chef specific
server01 = existing chef-server
server02 = new rabbitmq server to be added to cluster
On Server01
On your existing chef-server
*I assume you’re using the latest rabbitmq and that server02 will also install matching version
Check what the cluster output looks like
root@server01:~# rabbitmqctl cluster_status
Cluster status of node rabbit@server01 ..
[{nodes,[{disc,[rabbit@server01]}]},{running_nodes,[rabbit@server01]}]
...done.
Copy your rabbitmq cookie to server02
root@server01:~# scp /var/lib/rabbitmq/.erlang.cookie root@server02:/var/lib/rabbitmq/ Are you sure you want to continue connecting (yes/no)? yes root@server02's password: .erlang.cookie 100% 20 0.0KB/s 00:00
On Server02
Install rabbitmq
root@server02:~# echo "deb http://www.rabbitmq.com/debian/ testing main" |tee -a /etc/apt/sources.list root@server02:~# wget http://www.rabbitmq.com/rabbitmq-signing-key-public.asc root@server02:~# apt-key add rabbitmq-signing-key-public.asc root@server02:~# apt-get update root@server02:/var/chef/cache# apt-get -y install rabbitmq-server
Delete existing mnesia database and start rabbitmq
root@server02:~# service rabbitmq-server stop root@server02:~# rm -fr /var/lib/rabbitmq/mnesia root@server02:~# service rabbitmq-server start * Starting message broker rabbitmq-server ...done.
Join Server02 to Server01
root@server02:~# rabbitmqctl cluster_status
Cluster status of node rabbit@server02 ...
[{nodes,[{disc,[rabbit@server02]}]},{running_nodes,[rabbit@server02]}]
...done.
root@server02:~# rabbitmqctl stop_app
Stopping node rabbit@server02 ...
...done.
root@server02~# rabbitmqctl reset
Resetting node rabbit@server02 ...
...done.
root@server02:~# rabbitmqctl cluster rabbit@server01 rabbit@server02
Clustering node rabbit@server02 with [rabbit@server01,rabbit@server02] ...
...done.
root@server02:~# rabbitmqctl start
root@server02:~# rabbitmqctl cluster_status
Cluster status of node rabbit@server01 ...
[{nodes,[{disc,[rabbit@server02,rabbit@server01]}]},
{running_nodes,[rabbit@server02,rabbit@server01]}]
...done.
Verify on server01 that cluster shows up as expected
root@server01:~# rabbitmqctl cluster_status
Cluster status of node rabbit@server01 ...
[{nodes,[{disc,[rabbit@server02,rabbit@server01]}]},
{running_nodes,[rabbit@server02,rabbit@server01]}]
...done.
Make sure chef still works
root@server01:~# knife node list root@server01:~# knife client list chef-validator chef-webui root server01 root@server01:~# knife bootstrap -x root server02 --template-file ~/ubuntu12.04.rb Bootstrapping Chef on server02 Failed to authenticate root - trying password auth Enter your password: server02 Updating installed gems root@server01:~# knife node list server02
