在华为鲲鹏arm64架构服务器Docker部署Redis时报内核错误

一、问题描述

在Docker部署Redis时提示

root@chaopower-master:~# docker logs redis-server 
1:C 07 Apr 2024 01:23:49.191 # WARNING Your kernel has a bug that could lead to data corruption during background save. Please upgrade to the latest stable kernel.
1:C 07 Apr 2024 01:23:49.191 # 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

我本想将内核版本升级或者降级试试，但是由于是生产环境，上面跑着好多公司业务所以不能盲目动内核，但是这个docker部署的redis只是用来做测试用，所以这个问题也就很好解决！

二、解决方式

解决方式很简单，日志已经提醒需要在redis.config中添加配置 ignore-warnings ARM64-COW-BUG

但是，容器都没启动成功，根本没法获取容器中的redis.conf文件。

因此，需要先在宿主机上配置好redis.conf，再映射进容器中

1、下载对应版本redis.conf文件

我们需要在redis官网找到对应redis版本的配置文件

redis官网：https://redis.io/docs/management/config/

如果在拉取镜像时用的是latest版本可以用以下命令查看Redis版本

root@chaopower-master:~# docker image inspect redis:latest | grep -i "version"
        "DockerVersion": "",
                "GOSU_VERSION=1.17",
                "REDIS_VERSION=7.2.3",
root@chaopower-master:~#

2、更改redis.conf文件

root@chaopower-master:~# sed -i '$a\ignore-warnings ARM64-COW-BUG' /data/redis_7.2/conf/redis.conf 
root@chaopower-master:~# egrep "^ignore-warnings" /data/redis_7.2/conf/redis.conf 
ignore-warnings ARM64-COW-BUG

如果需要开启redis持久化请用以下命令修改redis配置文件

root@chaopower-master:~# sed -i 's/^appendonly no$/appendonly yes/' /data/redis_7.2/conf/redis.conf
root@chaopower-master:~# grep "appendonly yes" /data/redis_7.2/conf/redis.conf

3、启动redis容器

root@chaopower-master:~# docker run -itd --restart=always --name test-redis1 -v /data/redis_7.2/conf/redis.conf:/usr/local/etc/redis/redis.conf -v /data/redis_7.2/data/:/data -p 16379:6379 redis:latest redis-server /usr/local/etc/redis/redis.conf
root@chaopower-master:~# docker logs test-redis1
1:C 07 Apr 2024 02:32:04.502 # WARNING Your kernel has a bug that could lead to data corruption during background save. Pleaseernel.
1:C 07 Apr 2024 02:32:04.502 * oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
1:C 07 Apr 2024 02:32:04.502 * Redis version=7.2.3, bits=64, commit=00000000, modified=0, pid=1, just started
1:C 07 Apr 2024 02:32:04.502 * Configuration loaded
1:M 07 Apr 2024 02:32:04.503 * monotonic clock: POSIX clock_gettime
1:M 07 Apr 2024 02:32:04.503 # Failed to write PID file: Permission denied
                _._                                                  
           _.-``__ ''-._                                             
      _.-``    `.  `_.  ''-._           Redis 7.2.3 (00000000/0) 64 bit
  .-`` .-```.  ```\/    _.,_ ''-._                                  
 (    '      ,       .-`  | `,    )     Running in standalone mode
 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379
 |    `-._   `._    /     _.-'    |     PID: 1
  `-._    `-._  `-./  _.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |           https://redis.io       
  `-._    `-._`-.__.-'_.-'    _.-'                                   
 |`-._`-._    `-.__.-'    _.-'_.-'|                                  
 |    `-._`-._        _.-'_.-'    |                                  
  `-._    `-._`-.__.-'_.-'    _.-'                                   
      `-._    `-.__.-'    _.-'                                       
          `-._        _.-'                                           
              `-.__.-'                                               

1:M 07 Apr 2024 02:32:04.503 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn28.
1:M 07 Apr 2024 02:32:04.504 # Warning: Could not create server TCP listening socket ::1:6379: bind: Cannot assign requested a
1:M 07 Apr 2024 02:32:04.504 * Server initialized
1:M 07 Apr 2024 02:32:04.507 * Creating AOF base file appendonly.aof.1.base.rdb on server start
1:M 07 Apr 2024 02:32:04.511 * Creating AOF incr file appendonly.aof.1.incr.aof on server start
1:M 07 Apr 2024 02:32:04.511 * Ready to accept connections tcp

root@chaopower-master:~# cat >docker-compose-redis.yml<EOF
version: '3.8'
services:
  redis:
    image: redis:latest
    container_name: test-redis1
    restart: always
    volumes:
      - /data/redis_7.2/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /data/redis_7.2/data/:/data
    ports:
      - "16379:6379"
    command: redis-server /usr/local/etc/redis/redis.conf
    # 使用该参数，container内的root拥有真正的root权限。
    privileged: true
EOF