Redis remove slave from replication along with sentinel
I should read sentinel doc carefully. It's mentioned in sections Adding or removing Sentinels and Removing the old master or unreachable slaves.

These are steps:


Shut down the redis slave to be removed.
Remove slaveof statement from conf

# Generated by CONFIG REWRITE
slaveof 10.128.130.139 6379

Send a SENTINEL RESET mastername command to all  Sentinel instances. One after the other, waiting at least 30 seconds between instances.


Now the redis slave is standalone, and sentinels forget this slave.