CentOS7 安装Docker

操作系统要求：

• 要安装 Docker CE，您需要 CentOS7 的维护版本
• 必须启用 centos-extras repo。默认情况下，repo 已启用。
• 建议使用 overlay2 存储驱动程序。

删掉之前的docker版本

yum remove docker docker-common docker-selinux docker-engine

安装相关依赖

yum install -y yum-utils device-mapper-persistent-data lvm2

添加软件源信息

yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

更新并安装Docker-CE

yum makecache fast
sudo yum -y install docker-ce

开启Docker服务

systemctl start docker

查看安装信息

[[email protected] ~]# docker version
Client: Docker Engine - Community
 Version:           19.03.5
 API version:       1.40
 Go version:        go1.12.12
 Git commit:        633a0ea
 Built:             Wed Nov 13 07:25:41 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.5
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.12
  Git commit:       633a0ea
  Built:            Wed Nov 13 07:24:18 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

配置阿里云镜像加速

推荐安装1.10.0以上版本的Docker客户端

使用阿里云账号登录

https://cr.console.aliyun.com/cn-hangzhou/instances/mirrors

配置镜像加速器

mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://yk5r9j0f.mirror.aliyuncs.com"]
}
EOF
systemctl daemon-reload
systemctl restart docker