This FAQ does not apply when you first set up database clustering, but these steps must be run after every subsequent Core server software update; otherwise the Call Bridges and databases may be out-of-step with regards to the database schema.
The upgrade path for a clustered system is:
- Upgrade each database node one by one, ensuring each node is up and the database cluster status command reports full connection to the cluster, BEFORE upgrading the next one.
- Use the command database cluster status to identify the master node.
- Log into this master node’s MMP and issue the command
database cluster upgrade_schema
- Verify that the operation was successful by using database cluster status.