This is a non trivial operation. Only proceed if you have adequate rollback mechanisms in place, such as snapshots of your virtual machines and a backup of the database. ALL INSTALLATIONS - PORTAL VERSION
- Make sure the jtel Portal Version is at least 3.15 before starting.
- OPERATING SYSTEM
- Make sure the operating system is up to date with all updates on all mysql servers.
INSTALLATIONS WITH REPLICATION - Replication Slaves
- Make sure replication is working before starting
- Replication Masters
- Make sure that the binary log format is ROW and not MIXED or STATEMENT
- PHASE 1
- Complete phase 1 first for all servers, slaves first, then masters.
- Master-Master Configurations
- Stop the other master before updating.
- Make sure that both masters are 8.x before restarting.
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