问题描述：

[root@VM-0-17-centos netcat-0.7.1]# redis-cli -h 127.0.0.1
127.0.0.1:6379> info
NOAUTH Authentication required.

解决方法

[root@VM-0-17-centos netcat-0.7.1]# redis-cli -h 127.0.0.1
127.0.0.1:6379> auth **password**

**中间的内容为你的redis密码，因为我之前在/etc/redis.conf中配置过，requirepass mypassword

输入密码后

[root@VM-0-17-centos netcat-0.7.1]# redis-cli -h 127.0.0.1
127.0.0.1:6379> auth **password**
ok
127.0.0.1:6379> info
# Server
redis_version:5.0.4
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:ca295adcd8964025
redis_mode:standalone
os:Linux 3.10.0-1127.19.1.el7.x86_64 x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:4.8.5
process_id:16247
run_id:3926e84e3937f0ed4f7dc53f2253aed5d2b67c4a
tcp_port:6379
uptime_in_seconds:157594
uptime_in_days:1
hz:10
configured_hz:10
lru_clock:8911428
executable:/usr/bin/redis-server
config_file:/etc/redis.conf

# Clients
connected_clients:2
client_recent_max_input_buffer:2
client_recent_max_output_buffer:0
blocked_clients:0

# Memory
used_memory:875248
used_memory_human:854.73K
used_memory_rss:8134656
used_memory_rss_human:7.76M
used_memory_peak:875248
used_memory_peak_human:854.73K
used_memory_peak_perc:100.12%
used_memory_overhead:857880
used_memory_startup:791160
used_memory_dataset:17368