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 |