HA Cluster Software - Roles
Originally written by
- Allow us to configure services, and spread that configuration info on
several cluster nodes.
- Make it easy to launch those services on any of the cluster nodes.
- Make it easy to move
a running service from one node to another (e.g. to allow upgrading the
operating system or service software on the first node).
- Monitor the availability of the service
- Automatically switch a failed service to a different node.
Note: the switch should be as transparent to users as possible. This
requires some support from the client and server software.