If you require a larger number of users to access Ambari Views, it may be necessary to “scale-out” the Ambari Server by installing and running multiple Ambari Server standalone instances that host Ambari Views and run those instances behind a reverse proxy.

If a reverse proxy fronts the standalone Ambari Server instances, the only requirement is that the reverse proxy honors session affinity, meaning that once a session has been established the reverse proxy routes each subsequent request to the same Ambari server instance. Depending on the reverse proxy implementation, this can be accomplished in a number of different ways, including hashing client IP and using the JSESSIONID header.

	Important
	Using multiple Ambari Server instances and a reverse proxy in front of those instances is not supported for an operational Ambari Server. It is only supported for standalone Ambari Server instances (i.e. Ambari instances that are not managing a cluster).