Rocky Linux9下安装Docker和卸载Docker

前提条件

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

安装Docker

精简版下令

1. yum install -y yum-utils
3. yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
5. yum install -y docker-ce
7. systemctl enable docker --now
9. mkdir -p /etc/docker
11. tee /etc/docker/daemon.json <<-'EOF'
12. {
13.   "registry-mirrors": [
14.     "https://registry.docker-cn.com",
15.     "http://hub-mirror.c.163.com",
16.     "https://docker.mirrors.ustc.edu.cn"
17.   ]
18. }
19. EOF
22. systemctl daemon-reload
24. systemctl restart docker
26. docker version
28. docker info
30. docker run hello-world

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具体操作过程

安装须要的包

1. [root@localhost ~]# yum install -y yum-utils
2. Last metadata expiration check: 0:25:51 ago on Mon Sep  9 15:49:04 2024.
3. Package yum-utils-4.3.0-13.el9.noarch is already installed.
4. Dependencies resolved.
5. Nothing to do.
6. Complete!

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添加docker-ce repo

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

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安装docker-ce

1. [root@localhost ~]# yum install -y docker-ce
2. ...
3. 省略日志输出
4. ...

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设置开机主动启动docker及启动docker

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

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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

1. [root@localhost ~]# mkdir -p /etc/docker
2. [root@localhost ~]# tee /etc/docker/daemon.json <<-'EOF'
3. {
4.   "registry-mirrors": [
5.    "https://registry.docker-cn.com",
6.    "http://hub-mirror.c.163.com",
7.    "https://docker.mirrors.ustc.edu.cn"
8.   ]
9. }
10. EOF
11. {
12.   "registry-mirrors": [
13.    "https://registry.docker-cn.com",
14.    "http://hub-mirror.c.163.com",
15.    "https://docker.mirrors.ustc.edu.cn"
16.   ]
17. }

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重新加载配置及重启docker

1. [root@localhost ~]# systemctl daemon-reload
2. [root@localhost ~]# systemctl restart docker

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查看docker版本信息

1. [root@localhost ~]# docker version
2. Client: Docker Engine - Community
3. Version:           27.2.0
4. API version:       1.47
5. Go version:        go1.21.13
6. Git commit:        3ab4256
7. Built:             Tue Aug 27 14:17:06 2024
8. OS/Arch:           linux/amd64
9. Context:           default
10. ​
11. Server: Docker Engine - Community
12. Engine:
13.   Version:          27.2.0
14.   API version:      1.47 (minimum version 1.24)
15.   Go version:       go1.21.13
16.   Git commit:       3ab5c7d
17.   Built:            Tue Aug 27 14:15:14 2024
18.   OS/Arch:          linux/amd64
19.   Experimental:     false
20. containerd:
21.   Version:          1.7.21
22.   GitCommit:        472731909fa34bd7bc9c087e4c27943f9835f111
23. runc:
24.   Version:          1.1.13
25.   GitCommit:        v1.1.13-0-g58aa920
26. docker-init:
27.   Version:          0.19.0
28.   GitCommit:        de40ad0

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查看docker信息

1. [root@localhost ~]# docker info
2. Client: Docker Engine - Community
3. Version:    27.2.0
4. Context:    default
5. Debug Mode: false
6. Plugins:
7.   buildx: Docker Buildx (Docker Inc.)
8.    Version:  v0.16.2
9.    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
10.   compose: Docker Compose (Docker Inc.)
11.    Version:  v2.29.2
12.    Path:     /usr/libexec/docker/cli-plugins/docker-compose
13. ​
14. Server:
15. Containers: 0
16.   Running: 0
17.   Paused: 0
18.   Stopped: 0
19. Images: 0
20. Server Version: 27.2.0
21. Storage Driver: overlay2
22.   Backing Filesystem: xfs
23.   Supports d_type: true
24.   Using metacopy: false
25.   Native Overlay Diff: true
26.   userxattr: false
27. Logging Driver: json-file
28. Cgroup Driver: systemd
29. Cgroup Version: 2
30. Plugins:
31.   Volume: local
32.   Network: bridge host ipvlan macvlan null overlay
33.   Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
34. Swarm: inactive
35. Runtimes: runc io.containerd.runc.v2
36. Default Runtime: runc
37. Init Binary: docker-init
38. containerd version: 472731909fa34bd7bc9c087e4c27943f9835f111
39. runc version: v1.1.13-0-g58aa920
40. init version: de40ad0
41. Security Options:
42.   seccomp
43.   Profile: builtin
44.   cgroupns
45. Kernel Version: 5.14.0-427.33.1.el9_4.x86_64
46. Operating System: Rocky Linux 9.4 (Blue Onyx)
47. OSType: linux
48. Architecture: x86_64
49. CPUs: 4
50. Total Memory: 3.543GiB
51. Name: localhost.localdomain
52. ID: 24d90a1d-c5bf-41c9-862e-cab401d7b832
53. Docker Root Dir: /var/lib/docker
54. Debug Mode: false
55. Experimental: false
56. Insecure Registries:
57.   127.0.0.0/8
58. Registry Mirrors:
59.   https://registry.docker-cn.com/
60.   http://hub-mirror.c.163.com/
61.   https://docker.mirrors.ustc.edu.cn/
62. Live Restore Enabled: false
63. ​
64. [root@localhost ~]#
65. ​

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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。

1. [root@localhost ~]# docker run hello-world
2. Unable to find image 'hello-world:latest' locally
3. latest: Pulling from library/hello-world
4. c1ec31eb5944: Pull complete
5. Digest: sha256:53cc4d415d839c98be39331c948609b659ed725170ad2ca8eb36951288f81b75
6. Status: Downloaded newer image for hello-world:latest
7. ​
8. Hello from Docker!
9. This message shows that your installation appears to be working correctly.
10. ​
11. To generate this message, Docker took the following steps:
12. 1. The Docker client contacted the Docker daemon.
13. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
14.    (amd64)
15. 3. The Docker daemon created a new container from that image which runs the
16.    executable that produces the output you are currently reading.
17. 4. The Docker daemon streamed that output to the Docker client, which sent it
18.    to your terminal.
19. ​
20. To try something more ambitious, you can run an Ubuntu container with:
21. $ docker run -it ubuntu bash
22. ​
23. Share images, automate workflows, and more with a free Docker ID:
24. https://hub.docker.com/
25. ​
26. For more examples and ideas, visit:
27. https://docs.docker.com/get-started/
28. ​
29. [root@localhost ~]#
30. ​

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提示：网络的原因可能需要多实验几次才气下载乐成，如果下载不了，还可以实验添加更多可用镜像。

卸载docker

卸载docker下令

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

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删除docker相干文件
主机上的镜像、容器、卷或自定义配置文件不会主动删除，使用如下下令删除所有的镜像、容器和卷。

1. [root@localhost ~]# rm -rf /var/lib/docker
2. [root@localhost ~]# rm -rf /var/lib/containerd

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完成！enjoy it！

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