Disaster Recovery for Clustered Environments

taylor

How does Disaster Recovery work for clusters? What problems will occur if disaster recovery is looking for a Redis server it can't reach?  

Kathryn_Decisions

Disaster Recovery (DR) is initiated when all nodes in the cluster become unreachable. In such cases, the DR environment connects to a replicated version of the clustered database. When the Decisions Service is started, it will attempt to connect to both the Redis server and the load balancer and cause errors.

Before starting the DR environment, be sure to disable clustering by querying the database with one of the following queries.

SQL:

UPDATE clustering_settings
SET turn_on_clustering = 0

PostgresSQL:

UPDATE clustering_settings
SET turn_on_clustering = false