I know that if CCX node manager is not up, it will failover, I know that if the primary server is shutdown, it will failover on the standby.
Is there any documentation that tells what are the reason the CCX will failover ?
I only find that ...
CCX 7 Admin guide :
If the active server fails, there is automatic failover to the standby server.
When an active server failover occurs, the following happens:
•Any active calls existing in the system—and those ringing at an agent’s phone—are terminated.
When node 1 and node 2 running as master and slave state, and if node2 slave didn't received udp heartbeat messages (4 or 5) from node1 within 30 seconds then it node2 will assume that node 1 is having problem, so CVD process elects a new Master Engine on node2 and all services start on node2. So it can be network releated between nodes, or node1 memory issue or high pcu or any other hardware/software failure and not sending heartbeat then node2 takes over as master.
This doc about behaviour but not when it will failover.