install Redis failed

在创建chatroom的时候，参照这篇文章，安装Redis，实现异步：https://iridakos.com/programming/2019/04/04/creating-chat-application-rails-websockets

<span class="nb">sudo </span>apt update
<span class="nb">sudo </span>apt <span class="nb">install </span>redis-server


$ redis-cli
127.0.0.1:6379&gt; ping
PONG

有Redis，但是没有 server


根据提示修改文件
sudo  vim /etc/apt/sources.list
把不是阿里云的都注释了。（不要手动增加#）
继续查看Redis版本
redis-server

No version is set for command redis-server

Consider adding one of the following versions in your config file at

redis 4.0.9
查看redis-server安装在哪里

linlin@linlin-i5:/workspace/chatroom-rails$ which redis-server

/home/linlin/.asdf/shims/redis-server
查看asdf怎么使用

linlin@linlin-i5:/workspace/chatroom-rails$ asdf --help

version: v0.9.0-9ee24a3
全局使用Redis
asdf global redis

Usage: asdf global <name> <version>
查看redis-server
redis-server

24638:C 11 Aug 10:54:42.372 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

24638:C 11 Aug 10:54:42.372 # Redis version=4.0.9, bits=64, commit=00000000, modified=0, pid=24638, just started

24638:C 11 Aug 10:54:42.372 # Warning: no config file specified, using the default config. In order to specify a config file use /home/linlin/.asdf/installs/redis/4.0.9/bin/redis-server /path/to/redis.conf

24638:M 11 Aug 10:54:42.373 * Increased maximum number of open files to 10032 (it was originally set to 1024).

24638:M 11 Aug 10:54:42.373 # Creating Server TCP listening socket *:6379: bind: Address already in use
查看Redis进程
ps -ef |grep redis

redis      10913       1  0 08:51 ?        00:00:09 /usr/bin/redis-server 127.0.0.1:6379

linlin     24750   22690  0 10:54 pts/10   00:00:00 grep --color=auto redis