DENIED Redis is running in protected mode

一、開源軟件每每作的很是出色，錯誤的時候，會告訴你緣由，以及怎麼修改，仔細閱讀就能明白。好比這個錯誤：
    [root@localhost src]# ./redis-cli -h 172.16.2.16 -p 6379
    172.16.2.16:6379> get name
    (error) 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.
    已經告訴錯誤緣由：默認狀況下redis運行在保護模式（這種模式下，訪問不須要密碼），可是這種模式只容許本地迴路訪問。
    按照第二種方式修改。
    # are explicitly listed using the "bind" directive.
    protected-mode no
二、從新啓動redis服務，要想配置文件起效，啓動的時候，必須指定配置文件。以下：
    [root@localhost src]# ./redis-server ../redis.conf 
    可是，這個時候從外部鏈接，報錯：
    [root@localhost src]# ./redis-cli -h 172.16.2.16 -p 6379
    Could not connect to Redis at 172.16.2.16:6379: Connection refused
三、查看監聽信息，以下：
    [root@localhost src]# netstat -anp|grep 6379
    tcp        0      0 127.0.0.1:6379              0.0.0.0:*                   LISTEN      4201/./redis-server
    緣由是配置文件redis.conf配置了只在127.0.0.1上綁定監聽，取消一下。
    # IF YOU ARE SURE YOU WANT YOUR INSTANCE TO LISTEN TO ALL THE INTERFACES
    # JUST COMMENT THE FOLLOWING LINE.
    # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    #bind 127.0.0.1
四、重啓服務便可。