ubuntu20.04以及更高版本下docker添加国内镜像

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我是靠谱客的博主腼腆朋友，最近开发中收集的这篇文章主要介绍ubuntu20.04以及更高版本下docker添加国内镜像，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

ubuntu20.04下默认是snap安装的docker。安装位置和apt安装的不一样。所以daemon.json的位置也不一样。国内网上说的都是往/ect/docker/daemon.json里添加

"registry-mirrors": [
"http://hub-mirror.c.163.com",
"https://docker.mirrors.ustc.edu.cn",
"https://registry.docker-cn.com"
]

统统都不对。

google一下。原来在这里。/var/snap/docker/current/config/daemon.json

本来就有这个文件，不用新建。

往里加了"registry-mirrors"这一段。然后呢重启docker。

怎么重启呢？

国内网上告诉你systemctl restart docker。你会发现

Failed to restart docker.service: Unit docker.service not found.

网上一大堆人告诉你重装docker。其实snap安装的docker。用snap命令就行了。

snap restart docker

搞定！

xxx@ubuntu:/tmp# docker info

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 1
 Server Version: 20.10.17
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 10c12954828e7c7c9b6e0ea9b0c02b01407d3ae1
 runc version:
 init version: de40ad0
 Security Options:
  apparmor
  seccomp
   Profile: default
 Kernel Version: 5.4.0-132-generic
 Operating System: Ubuntu Core 18
 OSType: linux
 Architecture: x86_64
 CPUs: 6
 Total Memory: 7.607GiB
 Name: ubuntu2004s
 ID: I3F2:HD62:YSLM:GIGZ:JAB2:RBEI:MHNF:PDXT:Z3JQ:MY6R:SS72:S252
 Docker Root Dir: /var/snap/docker/common/var-lib-docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  http://hub-mirror.c.163.com/
  https://docker.mirrors.ustc.edu.cn/
  https://registry.docker-cn.com/
 Live Restore Enabled: false