Allow PortaSIP Media Server Cluster to be configured and used as a part of Geo-redundant configurations.
This project relies on previously worked out concept of geo-redundant configuration and doesn't bring any conceptual changes. The goal of this project is to make PSMS Cluster a part of geo-redundant configuration which in turn gives ITSP a possibility to setup distant groups of servers (sites) for easy fail-over purposes so that in particular ITSP can:
- continue to provide the service when a short-term outage strikes the primary site (power supply, network connections issues and similar that affect all servers located in a close area (rack, dataceneter, etc.));
- promote secondary site to primary in case of complete destruction of the primary site (flood, fire, other disasters).
- Multi-site configuration of SIP Cluster
Site - a group of servers having a name. In case of geo-redundant configurations servers are assigned to sites based on geographical location.
Primary (Main) site - site that hosts primary billing database (only one primary site per installation is allowed. It's name is always "Main").
Secondary site - site that doesn't host primary billing database and but it's replica. Typically it also contains required set of instances to provide the service autonomously even if primary site is unavailable.
Geo-redundant configuration - configuration with two (or more) sites, which are geographically distributed.