前提条件

安装好Rocky Linux9，可参考 Vmware下安装Rocky Linux9.4

安装Docker

精简版命令

<code>yum install -y yum-utils

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

yum install -y docker-ce

systemctl enable docker --now

mkdir -p /etc/docker

tee /etc/docker/daemon.json <<-'EOF'

{

"registry-mirrors": [

"https://registry.docker-cn.com",

"http://hub-mirror.c.163.com",

"https://docker.mirrors.ustc.edu.cn"

]

}

EOF

systemctl daemon-reload

systemctl restart docker

docker version

docker info

docker run hello-world

详细操作过程

安装必要的包

[root@localhost ~]# yum install -y yum-utils

Last metadata expiration check: 0:25:51 ago on Mon Sep 9 15:49:04 2024.

Package yum-utils-4.3.0-13.el9.noarch is already installed.

Dependencies resolved.

Nothing to do.

Complete!

添加docker-ce repo

[root@localhost ~]# yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

Adding repo from: https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

安装docker-ce

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

...

省略日志输出

...

设置开机自动启动docker及启动docker

[root@localhost ~]# systemctl enable docker --now

配置国内镜像加速，这里配置三个镜像加速地址，根据需要可以添加更多镜像地址

[root@localhost ~]# mkdir -p /etc/docker

[root@localhost ~]# tee /etc/docker/daemon.json <<-'EOF'

{

"registry-mirrors": [

  "https://registry.docker-cn.com",

  "http://hub-mirror.c.163.com",

  "https://docker.mirrors.ustc.edu.cn"

]

}

EOF

{

"registry-mirrors": [

  "https://registry.docker-cn.com",

  "http://hub-mirror.c.163.com",

  "https://docker.mirrors.ustc.edu.cn"

]

}

重新加载配置及重启docker

[root@localhost ~]# systemctl daemon-reload

[root@localhost ~]# systemctl restart docker

查看docker版本信息

[root@localhost ~]# docker version

Client: Docker Engine - Community

Version:           27.2.0

API version:       1.47

Go version:       go1.21.13

Git commit:       3ab4256

Built:             Tue Aug 27 14:17:06 2024

OS/Arch:           linux/amd64

Context:           default

​

Server: Docker Engine - Community

Engine:

Version:         27.2.0

API version:     1.47 (minimum version 1.24)

Go version:       go1.21.13

Git commit:       3ab5c7d

Built:           Tue Aug 27 14:15:14 2024

OS/Arch:         linux/amd64

Experimental:     false

containerd:

Version:         1.7.21

GitCommit:       472731909fa34bd7bc9c087e4c27943f9835f111

runc:

Version:         1.1.13

GitCommit:       v1.1.13-0-g58aa920

docker-init:

Version:         0.19.0

GitCommit:       de40ad0

查看docker信息

[root@localhost ~]# docker info

Client: Docker Engine - Community

Version:   27.2.0

Context:   default

Debug Mode: false

Plugins:

buildx: Docker Buildx (Docker Inc.)

  Version: v0.16.2

  Path:     /usr/libexec/docker/cli-plugins/docker-buildx

compose: Docker Compose (Docker Inc.)

  Version: v2.29.2

  Path:     /usr/libexec/docker/cli-plugins/docker-compose

​

Server:

Containers: 0

Running: 0

Paused: 0

Stopped: 0

Images: 0

Server Version: 27.2.0

Storage Driver: overlay2

Backing Filesystem: xfs

Supports d_type: true

Using metacopy: false

Native Overlay Diff: true

userxattr: false

Logging Driver: json-file

Cgroup Driver: systemd

Cgroup Version: 2

Plugins:

Volume: local

Network: bridge host ipvlan macvlan null overlay

Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog

Swarm: inactive

Runtimes: runc io.containerd.runc.v2

Default Runtime: runc

Init Binary: docker-init

containerd version: 472731909fa34bd7bc9c087e4c27943f9835f111

runc version: v1.1.13-0-g58aa920

init version: de40ad0

Security Options:

seccomp

  Profile: builtin

cgroupns

Kernel Version: 5.14.0-427.33.1.el9_4.x86_64

Operating System: Rocky Linux 9.4 (Blue Onyx)

OSType: linux

Architecture: x86_64

CPUs: 4

Total Memory: 3.543GiB

Name: localhost.localdomain

ID: 24d90a1d-c5bf-41c9-862e-cab401d7b832

Docker Root Dir: /var/lib/docker

Debug Mode: false

Experimental: false

Insecure Registries:

127.0.0.0/8

Registry Mirrors:

https://registry.docker-cn.com/

http://hub-mirror.c.163.com/

https://docker.mirrors.ustc.edu.cn/

Live Restore Enabled: false

​

[root@localhost ~]#

​

验证docker是否可用

下载一个 “hello-world” 测试镜像并在容器中运行它，当容器运行时，它会打印确认消息并退出。

[root@localhost ~]# docker run hello-world

Unable to find image 'hello-world:latest' locally

latest: Pulling from library/hello-world

c1ec31eb5944: Pull complete

Digest: sha256:53cc4d415d839c98be39331c948609b659ed725170ad2ca8eb36951288f81b75

Status: Downloaded newer image for hello-world:latest

​

Hello from Docker!

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/

​

[root@localhost ~]#

​

提示：网络的原因可能需要多尝试几次才能下载成功，如果下载不了，还可以尝试添加更多可用镜像。

卸载docker

卸载docker命令

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

删除docker相关文件

主机上的镜像、容器、卷或自定义配置文件不会自动删除，使用如下命令删除所有的镜像、容器和卷。

[root@localhost ~]# rm -rf /var/lib/docker

[root@localhost ~]# rm -rf /var/lib/containerd

完成！enjoy it！