CentOS8配置k8s daemon.json报错

配置k8s的过程种，需要对docker进行换源，同时需要修改k8s的驱动方式，参考了其他博客，于是：

mkdir /etc/docker/
vim /etc/docker/daemon.json

在daemon.json写入：

{
        "registry-mirrors" : ["https://mirror.aliyuncs.com"]
        "exec-opts":["native.cgroupdriver=systemd"]
}

但是运行

systemctl restart docker

报错：

Job for docker.service failed because the control process exited with error code.
See "systemctl status docker.service" and "journalctl -xe" for details.

查了一些资料，建议：

1.卸载docker重装
2.删除掉daemon.json的空格

确实可以启动docker了，但是加入daemon.json之后仍然报错

修改为
"registry-mirrors":["https://mirror.aliyuncs.com"]
仍然同样的报错

发现是少了一个,修改：

{
        "registry-mirrors":["https://mirror.aliyuncs.com"],
        "exec-opts":["native.cgroupdriver=systemd"]
}

成功！问题解决

[root@controller ~]# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: active (running) since Sat 2022-05-07 14:17:32 CST; 1h 2min ago
     Docs: https://docs.docker.com
 Main PID: 21246 (dockerd)
    Tasks: 30
   Memory: 115.0M
   CGroup: /system.slice/docker.service
           └─21246 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

May 07 14:17:31 controller dockerd[21246]: time="2022-05-07T14:17:31.815404848+08:00" level=warning msg="Your kernel does not support cgroup blkio weight"
May 07 14:17:31 controller dockerd[21246]: time="2022-05-07T14:17:31.815446940+08:00" level=warning msg="Your kernel does not support cgroup blkio weight_device"
May 07 14:17:31 controller dockerd[21246]: time="2022-05-07T14:17:31.815670508+08:00" level=info msg="Loading containers: start."
May 07 14:17:32 controller dockerd[21246]: time="2022-05-07T14:17:32.372544226+08:00" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option --bip can be used t>
May 07 14:17:32 controller dockerd[21246]: time="2022-05-07T14:17:32.497479327+08:00" level=info msg="Loading containers: done."
May 07 14:17:32 controller dockerd[21246]: time="2022-05-07T14:17:32.577644629+08:00" level=info msg="Docker daemon" commit=4433bf6 graphdriver(s)=overlay2 version=20.10.15
May 07 14:17:32 controller dockerd[21246]: time="2022-05-07T14:17:32.577795711+08:00" level=info msg="Daemon has completed initialization"
May 07 14:17:32 controller systemd[1]: Started Docker Application Container Engine.