Hello. I can check your database configuration and according to the list:
Currently running in multi-master config -- change this to master / slave OR multi master with failover
- add 3rd DB node to galera cluster
- Test failover
I am a senior system administrator with 10+ years of experience. I've been working at a hosting company and have managed more than 200 servers during this time.
Please, contact me in a chat and we can discuss the details.