安装docker-ce

1,查看版本

[root@localhost ~]# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)
[root@localhost ~]# uname -r
3.10.0-1160.71.1.el7.x86_64
 

2卸载旧版本，旧版本的Docker称为docker或者docker-engine：

[root@localhost ~]# yum remove docker docker-common docker-selinux docker-engine

3官网下载

[root@localhost ~]# curl -fsSL https://get.docker.com -o get-docker.sh
[root@localhost ~]# bash get-docker.sh

4添加centos源的信息

[root@localhost ~]# yum install yum-utils device-mapper-persistent-data lvm2 -y
[root@localhost ~]# yum-config-manager --add-repo https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo

5修改docker源

[root@localhost ~]# sed -i 's@download.docker.com@mirrors.tuna.tsinghua.edu.cn/docker-ce@g' /etc/yum.repos.d/docker-ce.repo
[root@localhost ~]# sed -i 's/$releasever/7/g' /etc/yum.repos.d/docker-ce.repo
[root@localhost ~]# sed -i 's/$basearch/x86_64/g' /etc/yum.repos.d/docker-ce.repo

6更新源

[root@localhost ~]# yum makecache fast

7安装dockerce最新版

[root@localhost ~]# yum -y install docker-ce

 [root@localhost ~]# rpm -q docker-ce   -------------------  检查安装包docker-ce
docker-ce-20.10.17-3.el7.x86_64
[root@localhost ~]# systemctl start docker   ----------   启动docker服务
[root@localhost ~]# systemctl status docker

安装指定版本

[root@localhost ~]# yum list docker-ce.x86_64 --showduplicates | sort -r

[root@localhost ~]# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]#  yum install -y https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/7/x86_64/stable/Packages/docker-ce-selinux-17.03.3.ce-1.el7.noarch.rpm
[root@localhost yum.repos.d]# yum install docker-ce-17.03.3.ce -y
[root@localhost yum.repos.d]# rpm -q docker-ce
docker-ce-20.10.17-3.el7.x86_64
[root@localhost yum.repos.d]# systemctl start docker
[root@localhost yum.repos.d]# systemctl status docker

[root@localhost ~]# docker --version
Docker version 20.10.17, build 100c701
[root@localhost ~]# docker version
Client: Docker Engine - Community
 Version:           20.10.17
[root@localhost ~]# docker run hello-world
[root@localhost ~]# docker run -it ubuntu bash

下载nginx镜像，alpine的镜像httpd的镜像并且给httpd镜像重新打标签

 

[root@localhost ~]# vi /etc/docker/daemon.json

[root@localhost ~]# systemctl daemon-reload
[root@localhost ~]# systemctl restart docker
[root@localhost ~]# docker info

 

[root@localhost ~]# vi /etc/sysctl.conf

-

 

[root@localhost ~]# docker pull nginx   ----下载nginx镜像（需要等待一段时间）

[root@localhost ~]# docker pull alpine 

[root@localhost ~]# docker pull httpd

 [root@localhost ~]# docker images | grep httpd
httpd         latest    f2a976f932ec   2 weeks ago     145MB
[root@localhost ~]# docker tag httpd test/httpd:v1
[root@localhost ~]# docker images | grep httpd
httpd         latest    f2a976f932ec   2 weeks ago     145MB
test/httpd    v1        f2a976f932ec   2 weeks ago     145MB