Redis安装和远程访问

安装

下载地址：
redis下载地址

下面是官方的编译安装方法：

$ wget http://download.redis.io/releases/redis-3.2.5.tar.gz$ tar xzf redis-3.2.5.tar.gz$ cd redis-3.2.5$ make

启动redis：

$ src/redis-server

利用客户端命令测试：

$ src/redis-cliredis> set foo barOKredis> get foo"bar"

此时的redis使用默认配置，只能本地访问。

开启远程访问

我们使用redis，一般不在本地使用，而在生产环境的机器上内网远程访问。

当我们使用默认配置时，用Python API会报这样的异常

redis.exceptions.ResponseError: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.

原因是redis默认开启了protected mode。
从以上报告的异常可以发现，有3种方法解决这个问题：
1. 直接关闭protected mode：在redis.conf配置文件中的protected mode选项(需要重启redis)，或者在redis-cli执行CONFIG SET protected-mode no或者在启动命令后加上参数--protected-mode no
2. 设置认证密码：使用命令config set requirepass <你的密码>
3. 绑定IP：修改redis.conf配置文件，加入bind <你允许访问的IP>