Docker配置阿里云镜像报错问题

悠悠 2021-09-02 06:18 577阅读 0赞

# 一 按照阿里云docker镜像配置方法配置docker的镜像，出现如下报错 #

[root@centos docker]# tee /etc/docker/daemon.json <<-'EOF'
    > {
    >   "registry-mirrors": ["https://48yz3v3v.mirror.aliyuncs.com"]
    > }
    > EOF
    {
      "registry-mirrors": ["https://48yz3v3v.mirror.aliyuncs.com"]
    }
    [root@centos docker]# systemctl daemon-reload
    [root@centos docker]# systemctl restart docker
    Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.

这里告诉我们执行 systemctl status docker.service 命令进行排错。

# 二 排错方法 #

[root@centos docker]# systemctl status docker
    ● docker.service - Docker Application Container Engine
       Loaded: loaded (/etc/systemd/system/docker.service; enabled; vendor preset: disabled)
       Active: failed (Result: start-limit) since Fri 2020-10-09 21:30:04 CST; 1min 11s ago
         Docs: https://docs.docker.com
      Process: 15511 ExecStart=/usr/bin/dockerd --registry-mirror=https://48yz3v3v.mirror.aliyuncs.com (code=exited, status=1/FAILURE)
    Main PID: 15511 (code=exited, status=1/FAILURE)
    
    Oct 09 21:30:04 centos systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
    Oct 09 21:30:04 centos systemd[1]: Failed to start Docker Application Container Engine.
    Oct 09 21:30:04 centos systemd[1]: Unit docker.service entered failed state.
    Oct 09 21:30:04 centos systemd[1]: docker.service failed.
    Oct 09 21:30:04 centos systemd[1]: docker.service holdoff time over, scheduling restart.
    Oct 09 21:30:04 centos systemd[1]: Stopped Docker Application Container Engine.
    Oct 09 21:30:04 centos systemd[1]: start request repeated too quickly for docker.service
    Oct 09 21:30:04 centos systemd[1]: Failed to start Docker Application Container Engine.
    Oct 09 21:30:04 centos systemd[1]: Unit docker.service entered failed state.
    Oct 09 21:30:04 centos systemd[1]: docker.service failed.
    [root@centos docker]# rm daemon.json
    rm: remove regular file ‘daemon.json’? y
    [root@centos docker]# systemctl daemon-reload
    [root@centos docker]# systemctl restart docker

重点关注下面两点：

1 报错文件

/etc/systemd/system/docker.service

2 报错信息

Process: 15511 ExecStart=/usr/bin/dockerd --registry-mirror=[https://48yz3v3v.mirror.aliyuncs.com][https_48yz3v3v.mirror.aliyuncs.com] (code=exited, status=1/FAILURE)

# 三 查看 /etc/systemd/system/docker.service 文件 #

[root@centos docker]# cat /etc/systemd/system/docker.service
    [Unit]
    Description=Docker Application Container Engine
    Documentation=https://docs.docker.com
    After=network-online.target firewalld.service
    Wants=network-online.target
    
    [Service]
    Type=notify
    # the default is not to use systemd for cgroups because the delegate issues still
    # exists and systemd currently does not support the cgroup feature set required
    # for containers run by docker
    ExecStart=/usr/bin/dockerd --registry-mirror=https://48yz3v3v.mirror.aliyuncs.com
    ExecReload=/bin/kill -s HUP $MAINPID
    # Having non-zero Limit*s causes performance problems due to accounting overhead
    # in the kernel. We recommend using cgroups to do container-local accounting.
    LimitNOFILE=infinity
    LimitNPROC=infinity
    LimitCORE=infinity
    # Uncomment TasksMax if your systemd version supports it.
    # Only systemd 226 and above support this version.
    #TasksMax=infinity
    TimeoutStartSec=0
    # set delegate yes so that systemd does not reset the cgroups of docker containers
    Delegate=yes
    # kill only the docker process, not all processes in the cgroup
    KillMode=process
    # restart the docker process if it exits prematurely
    Restart=on-failure
    StartLimitBurst=3
    StartLimitInterval=60s
    
    [Install]
    WantedBy=multi-user.target

这里提到了 ExecStart=/usr/bin/dockerd --registry-mirror=[https://48yz3v3v.mirror.aliyuncs.com][https_48yz3v3v.mirror.aliyuncs.com]，这句话告诉我们启动后，使用该地址作为镜像加速，其实已经配置了镜像加速。所以无需再配置镜像加速了。

在两个地方都配置镜像加速，系统冲突报错。我们只需配置一个地方即可。

# 四 配置镜像加速有很多方法，具体参考下面博客，总有一种方式可以配置成功 #

[https://blog.csdn.net/h4241778/article/details/108901890][https_blog.csdn.net_h4241778_article_details_108901890]

[https_48yz3v3v.mirror.aliyuncs.com]: https://48yz3v3v.mirror.aliyuncs.com/
[https_blog.csdn.net_h4241778_article_details_108901890]: https://blog.csdn.net/h4241778/article/details/108901890