Distributed installation

To establish a Master-Subserver-System with PPM in a cloud scenario, you must install PPM separately on the selected cloud instances. For example, you must install a master server on one cloud instance and two subservers separately on two other cloud instances.

In such a complex scenario, it is not sufficient to provide access on the separate instances using the base URL of the load balancer. On the subserver instances, you also must open the RMI ports on which the master communicates with the subservers. Those are:

The ports must be configured in the firewall of the master (outbound connection) and the subservers (inbound connection). Additionally, the RMI registry must be bound to the internal host name of the cloud instance. This internal host name can be retrieved using the following URL in a local browser:

http://instance-data/latest/meta-data/local-hostname

To configure this using ARIS Cloud Controller, the following commands must be issued on the subserver cloud instances:

In a public cloud scenario, this host name is usually different from the public host name, reachable from the outside world (internet).