Camunda cluster steps

Camunda 7 Topics Discussion & Questions
1

I am trying to setup Camunda homogeneous cluster with 2 nodes. Is there a guide with steps which I need to follow?
Is there any config change which needs to be done on Camunda setup on each node (something like mentioned here: We've moved! | docs.camunda.org ). or its just 2 Camunda Nodes behind a load balancer (with sticky sessions) and a Shared Database (to manage process state).

Looking for community insights on this.

2

Sounds like what you’ve described should work just fine. sticky sessions are only needed if you’re using the webapps. but if you just point 2 nodes at the same DB they become clustered. There isn’t any additional setup.

3

@Niall thank you for the reply. Also, I would like to put 2 more questions:

  1. If 1 node is Down, still our process will run as our database is shared and another node still can respond. This is known as failover clustering for camunda? Also how can we achieve active/active clustering?

  2. Is this configuration works fine Camunda -> MariaDB MaxScale -> MariaDB Cluster?

4

This is the behavior by default. You’ll always have active/active clustering with 2 nodes and one data-source.

Take a look at the supported environments page. There might some issues with MariaDB clustering.