redis从库只读设置-redis集群管理

默认情况下redis数据库充当slave角色时是只读的不能进行写操作，如果写入，会提示以下错误：READONLY You can't write against a read only slave.

127.0.0.1:6382> set k3 111

(error) READONLY You can't write against a read only slave.

如果你要开启从库也只能写操作，则修改配置文件的slave-read-only为no

# Since Redis 2.6 by default slaves are read-only.

#

# Note: read only slaves are not designed to be exposed to untrusted clients

# on the internet. It's just a protection layer against misuse of the instance.

# Still a read only slave exports by default all the administrative commands

# such as CONFIG, DEBUG, and so forth. To a limited extent you can improve

# security of read only slaves using 'rename-command' to shadow all the

# administrative / dangerous commands.

slave-read-only no