MySQL 8.4 Release Notes
在本节中，我们使用以下缩略语或符号来指代源集群和副本集群，以及在集群或集群节点上运行的进程和命令：Throughout this section, we use the following abbreviations or symbols for referring to the source and replica clusters, and to processes and commands run on the clusters or cluster nodes:
表 25.41 本节中用于指代源集群和副本集群，以及在集群节点上运行的进程和命令的缩略语Table 25.41 Abbreviations used throughout this section referring to source and replica clusters, and to processes and commands run on cluster nodes
| 符号或缩略语Symbol or Abbreviation | 描述（指代…）Description (Refers to...) |
|---|---|
S |
作为（主）复制源的集群The cluster serving as the (primary) replication source |
R |
作为（主）副本的集群The cluster acting as the (primary) replica |
shell |
在源集群上执行的 Shell 命令Shell command to be issued on the source cluster |
mysql |
在作为源集群 SQL 节点运行的单个 MySQL 服务器上发出的 MySQL 客户端命令MySQL client command issued on a single MySQL server running as an SQL node on the source cluster |
mysql |
在参与复制的源集群的所有 SQL 节点上发出的 MySQL 客户端命令MySQL client command to be issued on all SQL nodes participating in the replication source cluster |
shell |
在副本集群上发出的 Shell 命令Shell command to be issued on the replica cluster |
mysql |
在作为副本集群 SQL 节点运行的单个 MySQL 服务器上发出的 MySQL 客户端命令MySQL client command issued on a single MySQL server running as an SQL node on the replica cluster |
mysql |
在参与副本集群的所有 SQL 节点上发出的 MySQL 客户端命令MySQL client command to be issued on all SQL nodes participating in the replica cluster |
C |
主复制通道Primary replication channel |
C' |
次级复制通道Secondary replication channel |
S' |
次级复制源Secondary replication source |
R' |
次级副本Secondary replica |