centos 7.9 yum 安装docker-ce-20.10.11

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最新推荐文章于 2025-05-02 13:29:02 发布

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Centos 7.9 安装docker

环境查看

#系统内核

uname -r

3.10.0-1160.45.1.el7.x86_64

#系统版本

cat /etc/redhat-release

CentOS Linux release 7.9.2009 (Core)

安装

官方帮助文档：Install Docker Engine on CentOS | Docker Documentation

#1、卸载旧版本

yum remove docker \
>                   docker-client \
>                   docker-client-latest \
>                   docker-common \
>                   docker-latest \
>                   docker-latest-logrotate \
>                   docker-logrotate \
>                   docker-engine

#2、设置安装包（本次安装采用仓库安装）

yum install -y yum-utils

已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirrors.njupt.edu.cn
 * centos-sclo-rh: mirrors.njupt.edu.cn
 * centos-sclo-sclo: mirrors.njupt.edu.cn
 * extras: mirrors.huaweicloud.com
 * updates: mirrors.njupt.edu.cn
软件包 yum-utils-1.1.31-54.el7_8.noarch 已安装并且是最新版本
无须任何处理


#3、设置镜像仓库

官方命令：# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

# 注：官网给出的镜像更改为阿里云镜像运行如下命令

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

已加载插件：fastestmirror, langpacks
adding repo from: http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
grabbing file http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo

#4、快速更新yum源

yum makecache fast

#5、安装最新社区版docker引擎

yum install docker-ce docker-ce-cli containerd.io

#如果不想安装最新版本可指定版本安装命令如下：
# yum install docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io

启动并测试

截止上面步骤docker已经安装完成接下来我们将启动服务并测试hello world

#6、启动docker

systemctl start docker

#7、查看docker版本信息

docker version

Client: Docker Engine - Community #客户端信息
 Version:           20.10.11
 API version:       1.41
 Go version:        go1.16.9
 Git commit:        dea9396
 Built:             Thu Nov 18 00:38:53 2021
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server: Docker Engine - Community #服务端信息
 Engine:
  Version:          20.10.11
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.16.9
  Git commit:       847da18
  Built:            Thu Nov 18 00:37:17 2021
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.4.12
  GitCommit:        7b11cfaabd73bb80907dd23182b9347b4245eb5d
 runc:
  Version:          1.0.2
  GitCommit:        v1.0.2-0-g52b36a2
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

#8、运行hello- world测试docker

docker run hello-world

Unable to find image 'hello-world:latest' locally #没有找到镜像
latest: Pulling from library/hello-world  #拉取hello-world镜像
2db29710123e: Already exists
Digest: sha256:cc15c5b292d8525effc0f89cb299f1804f3a725c8d05e158653a563f15e4f685
Status: Downloaded newer image for hello-world:latest

Hello from Docker! #此处打印说明docker 安装成功并成功运行
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

#9、查看下载的 hello- world 镜像

docker images

REPOSITORY    TAG       IMAGE ID       CREATED        SIZE
hello-world   latest    feb5d9fea6a5   2 months ago   13.3kB

了解：如何卸载docker

#1、Uninstall the Docker Engine, CLI, and Containerd packages:
$ yum remove docker-ce docker-ce-cli containerd.io

#2、Images, containers, volumes, or customized configuration files on your host are not automatically removed. To delete all images, containers, and volumes:
$ rm -rf /var/lib/docker
$ rm -rf /var/lib/containerd