redis wrong number of arguments for 'spop' command和ubuntu redis升级

1、这个主要原因就是redis版本太低了，这个命令后面才支持，建议升级到3.2及以后
参考：https://github.com/xetorthio/jedis/issues/1247

2、参考redis版本

redis-cli --version 和 redis-cli -v

3、升级redis

参考：http://www.chenxm.cc/article/636.html
其他下载文件安装参考：https://www.jb51.net/article/136019.htm

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sudo apt-get install software-properties-common
sudo add-apt-repository -y ppa:rwky/redis
sudo apt-get update
sudo apt-get install -y redis-server

安装好后修改conf，注释掉bind 127 **
然后把protected mode 改成no，因为高版本及时0000ip了也限制只能本地访问，最后重启即可

不改protected mode 改成no，一般会报错
(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.

最后

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