利用配置yum源安装redis后，启动失败报：Could not connect to Redis

### 利用配置yum源安装redis后，启动失败报：Could not connect to Redis at 127.0.0.1:6379: Connection refused

> what: Could not connect to Redis at 127.0.0.1:6379: Connection refused
>
> when: 2021/10/12
>
> who：姚向雷
>
> where：centos
>
> why:记录过程
#### 问题描述：

```shell
[root@bf24bdec61d8 /]# redis-cli
Could not connect to Redis at 127.0.0.1:6379: Connection refused
not connected> 
```

问题分析：

```shell
#查日志位置
[root@bf24bdec61d8 /]# find / -name redis
/etc/logrotate.d/redis
/etc/redis
/var/lib/redis
/var/log/redis
/usr/lib64/redis
#可以看到日志在/var/log/redis
#查日志
vim redis.log
#输入定位至文本最后一行
134:M 12 Oct 2021 02:02:34.309 # Server initialized
134:M 12 Oct 2021 02:02:34.312 # WARNING Your kernel has a bug that could lead to data corruption during background save. Please upgrade to the latest stable kernel.
134:M 12 Oct 2021 02:02:34.312 # Redis will now exit to prevent data corruption. Note that it is possible to suppress this warning by setting the following config: ignore-warnings ARM64-COW-BUG
#可以看到config中问题
```

问题解决：

```shell
 vim /etc/redis/redis.conf
 #输入 G 定位至最后一行
 将 #ignore-warnings ARM64-COW-BUG 改为 ignore-warnings ARM64-COW-BUG
 #启动服务
 redis-server /etc/redis/redis.conf
 #连接
 [root@bf24bdec61d8 redis]# redis-cli -h 127.0.0.1 -p 6379
127.0.0.1:6379>

```