In a setup where there is one Config master and another secondary master (without configs ), I’m looking for the pros and cons of this setup in terms of administration , availability and performance.
I understand the configs is based on a single host and would need manual configuration on the secondary in case of the config master failure. The seconday master is essentially run time HA master.
What responsibilitites are shares between them? I read that notifications is one of them but don’t know how exactly that is shared…
What about the performance overhead in comparision with just a single node?