安装Docker

环境准备

1、需要会一点点的Linux的基础
2、CentOS 7
3、使用Xshell连接远程服务器进行操作

环境查看

[root@localhost ~]# uname -r
3.10.0-693.el7.x86_64
[root@localhost ~]# cat /etc/os-release 
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

安装

帮助文档:

#1、卸载旧的版本
yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

#2、需要的安装包
yum install -y yum-utils

#3、设置镜像的仓库
yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo #国外的比较慢,我们使用国内的
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

# 更新yum包索引
yum makecache fast

#4、安装docker相关的, docker-ce社区版
yum install docker-ce docker-ce-cli containerd.io

#5、 启动docker
[root@localhost ~]# systemctl start docker
[root@localhost ~]# docker version
Client: Docker Engine - Community
 Version:           19.03.12
 API version:       1.40
 Go version:        go1.13.10
 Git commit:        48a66213fe
 Built:             Mon Jun 22 15:46:54 2020
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.12
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.13.10
  Git commit:       48a66213fe
  Built:            Mon Jun 22 15:45:28 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.13
  GitCommit:        7ad184331fa3e55e52b890ea95e65ba581ae3429
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

#6、hello-world
docker run hello-world

# 7、查看一下下载的这个 hello-world 镜像
docker images

了解: 卸载docker

# 卸载依赖
yum remove docker-ce docker-ce-cli containerd.io
# 删除资源
rm -rf /var/lib/docker