前言

• CentOS Linux release 8.2
• CentOS Linux release 7.6

安裝 docker

安裝 yum-utils device-mapper-persistent-data lvm2

shell> yum install -y yum-utils device-mapper-persistent-data lvm2

添加 yum 源

shell> yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

安裝 docker-ce docker-ce-cli containerd.io

不指定版本時(shí)，安裝最新版本：

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

安裝完最新版本后，跳到第6步。
如果不想安裝最新版本，想要安裝指定版本，跳過本步。

列出并排序您存儲(chǔ)庫中可用的 docer 版本

shell> yum list docker-ce --showduplicates | sort -r Last metadata expiration check: 1:27:20 ago on Fri 04 Dec 2020 01:37:56 PM CST. Installed Packages docker-ce.x86_64 3:19.03.14-3.el8 docker-ce-stable docker-ce.x86_64 3:19.03.14-3.el8 @docker-ce-stable docker-ce.x86_64 3:19.03.13-3.el8 docker-ce-stable Available Packages

軟件版本：從第一個(gè)冒號(hào)（:）一直到第一個(gè)連字符，并用連字符（-）分隔。例如：3:19.03.14-3.el8，表示版本為19.03.14。

5.安裝指定版本

shell> yum install docker-ce-19.03.14 docker-ce-cli-19.03.14 containerd.io

查看已安裝的 docker 的版本

shell> docker version Client: Docker Engine - CommunityVersion: 19.03.14API version: 1.40Go version: go1.13.15Git commit: 5eb3275d40Built: Tue Dec 1 19:19:47 2020OS/Arch: linux/amd64Experimental: false Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

啟動(dòng) docker

shell> systemctl start docker

查看 docker 運(yùn)行狀態(tài)

shell> systemctl status docker ● docker.service - Docker Application Container EngineLoaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)Active: active (running) since Fri 2020-12-04 15:30:57 CST; 40s agoDocs: https://docs.docker.comMain PID: 208208 (dockerd)Tasks: 13Memory: 46.5MCGroup: /system.slice/docker.service└─208208 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sockDec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ dockerd[208208]: time="2020-12-04T15:30:57.252052950+08:00" level=info msg="[graphdriver] using prior storage driver: overlay2" Dec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ dockerd[208208]: time="2020-12-04T15:30:57.256586740+08:00" level=warning msg="Your kernel does not support cgroup blkio weight" Dec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ dockerd[208208]: time="2020-12-04T15:30:57.256605276+08:00" level=warning msg="Your kernel does not support cgroup blkio weight_device" Dec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ dockerd[208208]: time="2020-12-04T15:30:57.256720411+08:00" level=info msg="Loading containers: start." Dec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ dockerd[208208]: time="2020-12-04T15:30:57.358468112+08:00" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17> Dec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ dockerd[208208]: time="2020-12-04T15:30:57.394937144+08:00" level=info msg="Loading containers: done." Dec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ dockerd[208208]: time="2020-12-04T15:30:57.411469411+08:00" level=info msg="Docker daemon" commit=5eb3275d40 graphdriver(s)=overlay2 versi> Dec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ dockerd[208208]: time="2020-12-04T15:30:57.411520020+08:00" level=info msg="Daemon has completed initialization" Dec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ dockerd[208208]: time="2020-12-04T15:30:57.425874550+08:00" level=info msg="API listen on /var/run/docker.sock" Dec 04 15:30:57 iZ2ze55vge3erirrmw2mstZ systemd[1]: Started Docker Application Container Engine.

docker 版的 Hello World！

shell> docker run hello-worldHello from Docker! This message shows that your installation appears to be working correctly.

至此，正確安裝了 Docker Engine-Community。

參考

https://www.runoob.com/docker/centos-docker-install.html
http://guide.daocloud.io/dcs/docker-9152677.html

總結(jié)

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