Avaya Aura® Device Services supports a single cluster deployment. A cluster can include up to 14 Avaya Aura® Device Services servers or nodes. All nodes must be in the same network.
By default, Avaya Aura® Device Services uses an on-board nginx load balancer. For IP failover and high-availability purposes, nginx uses the Keepalived service and the Virtual Router Redundancy Protocol (VRRP). This solution requires that the cluster virtual IP address and the two IP addresses for the load balancer nodes must be in the same subnet.
The on-board load balancer only supports small deployments of up to 20,000 devices when Avaya Aura® Device Services is deployed in a single data center.
In larger or geographically distributed deployments, however, you must use an external load balancer instead of the default nginx load balancer.
For these larger cluster deployments, consider the following:
