下载安装 Redis 服务

• 安装redis：sudo apt-get install -y redis-server

设置密码

• 设置密码：sudo vim /etc/redis/redis.conf
• 修改配置文件的密码，如下内容：

# Instead of configuring users here in this file, it is possible to use
# a stand-alone file just listing users. The two methods cannot be mixed:
# if you configure users here and at the same time you activate the external
# ACL file, the server will refuse to start.
#
# The format of the external ACL user file is exactly the same as the
# format that is used inside redis.conf to describe users.
#
# aclfile /etc/redis/users.acl

# IMPORTANT NOTE: starting with Redis 6 "requirepass" is just a compatibility
# layer on top of the new ACL system. The option effect will be just setting
# the password for the default user. Clients will still authenticate using
# AUTH <password> as usually, or more explicitly with AUTH default <password>
# if they follow the new protocol: both will work.
#
# The requirepass is not compatible with aclfile option and the ACL LOAD
# command, these will cause requirepass to be ignored.
#
requirepass 123456

• 重启redis：service redis restart

登陆 Redis 服务

• 进入 Redis：<font style="color:#DF2A3F;background-color:rgb(255,255,255);">redis-cli</font>
• 先进行登陆：<font style="color:#DF2A3F;background-color:rgb(255,255,255);">AUTH 123456</font>
• 再进行redis操作的时候就会提示输入密码了

root@VM-0-8-ubuntu:/etc/redis# redis-cli
127.0.0.1:6379> AUTH 123456
OK
127.0.0.1:6379> keys *
(empty array)
127.0.0.1:6379> 

配置远程登陆

• 修改配置文件（/etc/redis/redis.conf）以下参数，让外部能够连接：

bind 0.0.0.0
protected-mode no

Redis 客户端连接

• 使用 RDM 客户端来连接 Redis
  

问题排查

如果连接不上，请按照下面排查：

• 检查配置文件：bind、protected-mode、requirepass参数
• 检查防火墙是否对6379端口打开
• 如果是腾讯云、阿里云等等服务器，请咨询是否在服务器外面还有安全组
• 配置文件修改后需要重启redis：service redis restart