3 Replies Latest reply on Jul 15, 2020 1:24 PM by Dave Stokes-MySQL Community Team-Oracle

    MySQL InnoDB Cluster Topology




      I have a few unclear concepts regarding MySQL InnoDB Cluster Topology to be deployed into our environment. The attachment is obtained from "MySQL InnoDB Cluster & MySQL Group Replication In a Nutshell Hands-On Tutorial". It was in 2017. I'm not clear what Mp symbol stands for. Is it referring to a Primary Master?


      Can anybody explain to me the following concept?


      • Is Primary Master in a Cluster a Read Write Compute Instance?
      • Is Secondary Master in a Cluster a Read Only Compute Instance?
      • Is Slave a Compute Instance to replicate from any of Masters regardless Primary or Secondary?
      • Is a Cluster Node a Compute Instance holding one or more mysqld processes? (Typically just one mysqld process)
      • Is a mysqld instance holding one or more schemas? (schema is created via "create database" statement)
      • Can you have a Compute Instance holding both R/W and R/O mode?
      • Can you have a mysqld instance holding both R/W and R/O mode?


      Thank you!


      - Xinhuan