I have two MySQL Database Servers i.e. One is Active Server --> Master and second is Passive Server --> Slave.
And as we know we have 3-4 MySQL HR,DR Solutions / Clustering options.For example
01 : MySQL NDB Cluster
02 : MySQL InnoDB Cluster
03 : MySQL Cluster Carrier Grade
My First Question is i want to deploy One Active & One Passive MySQL Server so which Cluster Option / HA,DR Option will be fit for above mentioned scenario ?
My Second Question is suppose i have deploy One Active & One Passive MySQL Server in any above mentioned Cluster Option / HA,DR Option. So what about licensing ? I have to buy license of MySQL Servers/ Cluster ?