Throughout this section, we use the following abbreviations or symbols for referring to the master and slave clusters, and to processes and commands run on the clusters or cluster nodes:
| Symbol or Abbreviation | Description (Refers to...) |
|---|---|
M | The cluster serving as the (primary) replication master |
S | The cluster acting as the (primary) replication slave |
shell | Shell command to be issued on the master cluster |
mysql | MySQL client command issued on a single MySQL server running as an SQL node on the master cluster |
mysql | MySQL client command to be issued on all SQL nodes participating in the replication master cluster |
shell | Shell command to be issued on the slave cluster |
mysql | MySQL client command issued on a single MySQL server running as an SQL node on the slave cluster |
mysql | MySQL client command to be issued on all SQL nodes participating in the replication slave cluster |
C | Primary replication channel |
C' | Secondary replication channel |
M' | Secondary replication master |
S' | Secondary replication slave |