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MySQL 5.7 Reference Manual  /  ...  /  NDB Cluster Replication: Abbreviations and Symbols

21.6.1 NDB Cluster Replication: Abbreviations and Symbols

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:

Table 21.65 Abbreviations used throughout this section referring to source and replica clusters, and to processes and commands run on cluster nodes

Symbol or Abbreviation Description (Refers to...)
S The cluster serving as the (primary) replication source
R The cluster acting as the (primary) replica
shellS> Shell command to be issued on the source cluster
mysqlS> MySQL client command issued on a single MySQL server running as an SQL node on the source cluster
mysqlS*> MySQL client command to be issued on all SQL nodes participating in the replication source cluster
shellR> Shell command to be issued on the replica cluster
mysqlR> MySQL client command issued on a single MySQL server running as an SQL node on the replica cluster
mysqlR*> MySQL client command to be issued on all SQL nodes participating in the replica cluster
C Primary replication channel
C' Secondary replication channel
S' Secondary replication source
R' Secondary replica