[rabbitmq-discuss] Upgrading erlang, rabbitmq in a cluster.

[Jean Paul Galea]

Hi,

We plan on deploying a RabbitMQ cluster on two ubuntu machines, 
consisting of two nodes in active/active mode with durable, mirrored 
queues and persistent messages.

We'll use these APT repositories to install esl-erlang (current v. 
R15B02) and rabbitmq-server (current v 2.8.7);

deb http://www.rabbitmq.com/debian/ testing main
deb http://binaries.erlang-solutions.com/debian squeeze contrib

The question is, how do we keep these two nodes up to date with the 
latest versions, without suffering downtime?

In particular, from the docs and mailing list I came across these two 
points;

- All nodes in a cluster must be running the same Erlang and RabbitMQ 
versions.

- Seems like RabbitMQ v2.8.7 supports rolling upgrades.

Thank you for your time,

Jean Paul