SYNC with master failed: -ERR unknown command 'SYNC'

1
votes

I was trying to dump my Redis data that is hosted via AWS. I can log into the interactive mode via redis-cli, but when I tried dumping the data to an RDB file I received the following error in the title...

user@awshost:~/TaoRedisExtract$ redis-cli -h myawsredis.amazonaws.com --rdb redis.dump.rdb SYNC with master failed: -ERR unknown command 'SYNC'

I'm not sure if this is a bug, a configuration issue, or known/expected behavior for AWS redis? I've searched and searched and not found any other reports of users getting this error message.

1
amazon-web-servicesredis

1 Answers

2
votes

according to reply of similar question of aws forum

From redis version 2.8.22 SYNC has been disabled:

"To maintain enhanced replication performance in Multi-AZ replication groups and for increased cluster stability, non-ElastiCache replicas are no longer supported"