Error set: Redis restart service error (Waiting for Redis to shutdown...)

1. An error is reported when the redis service is closed

/etc/init.d/redis_6379 restart
Stopping ...
(error) NOAUTH Authentication required.
Waiting for Redis to shutdown ...
Waiting for Redis to shutdown ...

2. Solution
(1) Close the redis database password

[root@localhost ~]#redis-cli  -p 6379
127.0.0.1:6379> AUTH 123456
OK
127.0.0.1:6379> config set requirepass 
(error) ERR Unknown subcommand or wrong number of arguments for 'set'. Try CONFIG HELP.
127.0.0.1:6379> config set requirepass ''   #关键需要改空密码
OK
127.0.0.1:6379> quit
[root@localhost ~]#/etc/init.d/redis_6379 restart
Stopping ...
Redis stopped
Starting Redis server...
[root@localhost ~]#

(2) Kil kills the process

• I first checked whether the service was still running, and then checked the configuration file, there was no problem
  

• So I want to kill the redis service by killing it and start it again. It prompts that the /var/run/redis_6379.pid file exists, delete the pid file, restart the service, and it succeeds.
  

• You can log in, but the password is gone
  

(3) Direct rm to delete the pid file, you can log in, the password is still there