CentOS8安装最新Docker教程（含离线安装方法）

2023-06-18 03:36| 来源: 网络整理| 查看: 265

一、离线安装

我已经将安装Docker所有需要rpm上传： Dcoker整合包，这样就可以离线安装Docker。

整合包安装平台：CentOS

Docker版本：19.03.12

下载解压后，进入解压后的目录，执行：

sudo rpm -Uvh *.rpm

[jeremy@cent8-02-jeremy docker]$ sudo rpm -Uvh *.rpm [sudo] password for jeremy: warning: audit-3.0-0.17.20191104git1c2f876.el8.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 8483c65d: NOKEY warning: containerd.io-1.2.13-3.2.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY Verifying... ################################# [100%] Preparing... ################################# [100%] Updating / installing... 1:libsepol-2.9-1.el8 ################################# [ 3%] ... 19:container-selinux-2:2.124.0-1.mod################################# [ 59%] 20:containerd.io-1.2.13-3.2.el7 ################################# [ 63%] 21:docker-ce-3:19.03.12-3.el7 ################################# [ 66%] 22:audit-3.0-0.17.20191104git1c2f876################################# [ 69%] Cleaning up / removing... 23:selinux-policy-targeted-3.14.1-61################################# [ 72%] 24:audit-3.0-0.10.20180831git0047a6c################################# [ 75%] 25:python3-libselinux-2.8-6.el8 ################################# [ 78%] 26:selinux-policy-3.14.1-61.el8 ################################# [ 81%] 27:policycoreutils-2.8-16.1.el8 ################################# [ 84%] 28:libsemanage-2.8-5.el8 ################################# [ 88%] 29:libselinux-utils-2.8-6.el8 ################################# [ 91%] 30:libselinux-2.8-6.el8 ################################# [ 94%] 31:libsepol-2.8-2.el8 ################################# [ 97%] 32:audit-libs-3.0-0.10.20180831git00################################# [100%] 二、Yum源安装 2.1 添加清华源

执行：

sudo dnf config-manager --add-repo https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo

[jeremy@cent8-01-jeremy ~]$ sudo dnf config-manager --add-repo https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo [sudo] password for jeremy: Adding repo from: https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo

这样其实只是在清华大学开源软件镜像站下载了Docker官方仓库，这样安装软件还是很慢。替换为清华源，执行：

sudo sed -i 's+download.docker.com+mirrors.tuna.tsinghua.edu.cn/docker-ce+' /etc/yum.repos.d/docker-ce.repo

[jeremy@cent8-01-jeremy ~]$ sudo sed -i 's+download.docker.com+mirrors.tuna.tsinghua.edu.cn/docker-ce+' /etc/yum.repos.d/docker-ce.repo [sudo] password for jeremy: 2.2 安装container-selinux

执行：

sudo dnf install container-selinux

[jeremy@cent8-01-jeremy ~]$ sudo dnf install container-selinux Last metadata expiration check: 0:15:22 ago on Sat 12 Sep 2020 01:47:31 PM CST. Dependencies resolved. ==================================================================== Package Arch Version Repository Size ==================================================================== Installing: container-selinux noarch 2:2.124.0-1.module_el8.2.0+305+5e198a41 AppStream 47 k Upgrading: audit x86_64 3.0-0.17.20191104git1c2f876.el8 BaseOS 254 k audit-libs x86_64 3.0-0.17.20191104git1c2f876.el8 BaseOS 116 k libsemanage x86_64 2.9-2.el8 BaseOS 165 k policycoreutils x86_64 2.9-9.el8 BaseOS 377 k selinux-policy noarch 3.14.3-41.el8_2.5 BaseOS 614 k selinux-policy-targeted noarch 3.14.3-41.el8_2.5 BaseOS 15 M Installing dependencies: policycoreutils-python-utils noarch 2.9-9.el8 BaseOS 251 k python3-audit x86_64 3.0-0.17.20191104git1c2f876.el8 BaseOS 86 k python3-libsemanage x86_64 2.9-2.el8 BaseOS 127 k python3-policycoreutils noarch 2.9-9.el8 BaseOS 2.2 M python3-setools x86_64 4.2.2-2.el8 BaseOS 601 k Enabling module streams: container-tools rhel8 Transaction Summary ==================================================================== Install 6 Packages Upgrade 6 Packages Total download size: 20 M 2.3 安装Docker

执行：

sudo dnf install --repo BaseOS,docker-ce-stable docker-ce docker-ce-cli containerd.io

[jeremy@cent8-01-jeremy ~]$ sudo dnf install --repo BaseOS,docker-ce-stable docker-ce docker-ce-cli containerd.io Last metadata expiration check: 0:34:13 ago on Sat 12 Sep 2020 01:47:31 PM CST. Dependencies resolved. ============================================================================================================================================================== Package Arch Version Repository Size ============================================================================================================================================================== Installing: containerd.io x86_64 1.2.13-3.2.el7 docker-ce-stable 25 M docker-ce x86_64 3:19.03.12-3.el7 docker-ce-stable 24 M docker-ce-cli x86_64 1:19.03.12-3.el7 docker-ce-stable 38 M Installing dependencies: libcgroup x86_64 0.41-19.el8 BaseOS 70 k xz x86_64 5.2.4-3.el8 BaseOS 153 k Transaction Summary ============================================================================================================================================================== Install 5 Packages Total download size: 88 M Installed size: 360 M 三、启动Docker

执行：

sudo systemctl start docker

[jeremy@cent8-01-jeremy ~]$ sudo systemctl start docker [sudo] password for jeremy: 四、运行第一个Docker镜像

执行：

sudo docker run hello-world

[jeremy@cent8-01-jeremy ~]$ sudo docker run hello-world Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world 0e03bdcc26d7: Pull complete Digest: sha256:4cf9c47f86df71d48364001ede3a4fcd85ae80ce02ebad74156906caff5378bc 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/ 五、坑 5.1 requires containerd.io >= 1.2.2-3

本来理想状态下，直接执行：

sudo dnf install docker-ce docker-ce-cli containerd.io

就可以安装完成了，结果：

[jeremy@cent8-01-jeremy ~]$ sudo dnf install docker-ce docker-ce-cli containerd.io Last metadata expiration check: 0:01:30 ago on Sat 12 Sep 2020 01:47:31 PM CST. Error: Problem: package docker-ce-3:19.03.12-3.el7.x86_64 requires containerd.io >= 1.2.2-3, but none of the providers can be installed - cannot install the best candidate for the job - package containerd.io-1.2.10-3.2.el7.x86_64 is excluded - package containerd.io-1.2.13-3.1.el7.x86_64 is excluded - package containerd.io-1.2.13-3.2.el7.x86_64 is excluded - package containerd.io-1.2.2-3.3.el7.x86_64 is excluded - package containerd.io-1.2.2-3.el7.x86_64 is excluded - package containerd.io-1.2.4-3.1.el7.x86_64 is excluded - package containerd.io-1.2.5-3.1.el7.x86_64 is excluded - package containerd.io-1.2.6-3.3.el7.x86_64 is excluded (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

这里提示：

Error: Problem: package docker-ce-3:19.03.12-3.el7.x86_64 requires containerd.io >= 1.2.2-3, but none of the providers can be installed - cannot install the best candidate for the job - package containerd.io-1.2.10-3.2.el7.x86_64 is excluded - package containerd.io-1.2.13-3.1.el7.x86_64 is excluded - package containerd.io-1.2.13-3.2.el7.x86_64 is excluded - package containerd.io-1.2.2-3.3.el7.x86_64 is excluded - package containerd.io-1.2.2-3.el7.x86_64 is excluded - package containerd.io-1.2.4-3.1.el7.x86_64 is excluded - package containerd.io-1.2.5-3.1.el7.x86_64 is excluded - package containerd.io-1.2.6-3.3.el7.x86_64 is excluded (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

经过我一番研究，知道了为什么会这样，但是构成的原因不是很理解，只是知道现象，可能是因为还没有适配CentOS8吧，不过知道如何解决也好。

因为container-selinux-2:2.124.0-1与containerd.io之间引起的问题。

直接执行安装是，containerd.io依赖container-selinux，container-selinux在AppStream仓库内，启用了该仓库就会自动过滤了containerd.io-1.2.0-3.el7之后的版本，但是docker-ce-3:19.03.12-3.el7依赖containerd.io，要求本版>= 1.2.2-3，陷入僵局。

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