Applies to SUSE Linux Enterprise High Availability 15 SP3

1 Challenges for Geo clusters #

Typically, Geo environments are too far apart to support synchronous communication between the sites. That leads to the following challenges:

How to make sure that a cluster site is up and running?
How to make sure that resources are only started once?
How to make sure that quorum can be reached between the different sites and a split-brain scenario can be avoided?
How to keep the CIB up to date on all nodes and sites?
How to manage failover between the sites?
How to deal with high latency in case of resources that need to be stopped?

In the following sections, learn how to meet these challenges with SUSE Linux Enterprise High Availability.