Sets a server as a replica of another, or promotes it to being a primary.
SLAVEOF
host port
SLAVEOF
NO
ONE
A note about the word slave used in this man page and command name: If not for Redis OSS compatibility, the Valkey project does not use the word slave. Please use the new command REPLICAOF
. The command SLAVEOF
will continue to work for backward compatibility.
The SLAVEOF
command can change the replication settings of a replica on the fly. If a Valkey server is already acting as replica, the command SLAVEOF
NO ONE will turn off the replication, turning the Valkey server into a MASTER. In the proper form SLAVEOF
hostname port will make the server a replica of another server listening at the specified hostname and port.
If a server is already a replica of some master, SLAVEOF
hostname port will stop the replication against the old server and start the synchronization against the new one, discarding the old dataset.
The form SLAVEOF
NO ONE will stop replication, turning the server into a MASTER, but will not discard the replication. So, if the old master stops working, it is possible to turn the replica into a master and set the application to use this new master in read/write. Later when the other Valkey server is fixed, it can be reconfigured to work as a replica.
Simple string reply: OK
.
O(1)
@admin @dangerous @slow
REPLICAOF
.ACL, ACL CAT, ACL DELUSER, ACL DRYRUN, ACL GENPASS, ACL GETUSER, ACL HELP, ACL LIST, ACL LOAD, ACL LOG, ACL SAVE, ACL SETUSER, ACL USERS, ACL WHOAMI, BGREWRITEAOF, BGSAVE, COMMAND, COMMAND COUNT, COMMAND DOCS, COMMAND GETKEYS, COMMAND GETKEYSANDFLAGS, COMMAND HELP, COMMAND INFO, COMMAND LIST, CONFIG, CONFIG GET, CONFIG HELP, CONFIG RESETSTAT, CONFIG REWRITE, CONFIG SET, DBSIZE, DEBUG, FAILOVER, FLUSHALL, FLUSHDB, INFO, LASTSAVE, LATENCY, LATENCY DOCTOR, LATENCY GRAPH, LATENCY HELP, LATENCY HISTOGRAM, LATENCY HISTORY, LATENCY LATEST, LATENCY RESET, LOLWUT, MEMORY, MEMORY DOCTOR, MEMORY HELP, MEMORY MALLOC-STATS, MEMORY PURGE, MEMORY STATS, MEMORY USAGE, MODULE, MODULE HELP, MODULE LIST, MODULE LOAD, MODULE LOADEX, MODULE UNLOAD, MONITOR, PSYNC, REPLCONF, REPLICAOF, RESTORE-ASKING, ROLE, SAVE, SHUTDOWN, SLOWLOG, SLOWLOG GET, SLOWLOG HELP, SLOWLOG LEN, SLOWLOG RESET, SWAPDB, SYNC, TIME.