本文介紹了如何配置docker官方源并用yum安裝docker ，分享給大家，希望對各位有幫助
一、docker的官方安裝文檔：
https://docs.docker.com/engine/installation/linux/centos/
由docker給的文檔可以看出它也只是去配置了一個docker的yum源、然后就通過這個源來安裝docker了；在這個文檔下我們采用手工配置
的方式
二、配置一個docker用的源：
1、為docker 增加一個新的yum配置文件；touch /etc/yum.repos.d/docker.repo
touch /etc/yum.repos.d/docker.repo
2、docker.repo的內容如下
[docker-ce-stable]name=Docker CE Stable - $basearchbaseurl=https://download.docker.com/linux/centos/7/$basearch/stableenabled=1gpgcheck=0 #我把這里設置成了0、說明我信任了這個源，不對它的rpm進行檢察gpgkey=https://download.docker.com/linux/centos/gpg[docker-ce-stable-debuginfo]name=Docker CE Stable - Debuginfo $basearchbaseurl=https://download.docker.com/linux/centos/7/debug-$basearch/stableenabled=0gpgcheck=1gpgkey=https://download.docker.com/linux/centos/gpg[docker-ce-stable-source]name=Docker CE Stable - Sourcesbaseurl=https://download.docker.com/linux/centos/7/source/stableenabled=0gpgcheck=1gpgkey=https://download.docker.com/linux/centos/gpg[docker-ce-edge]name=Docker CE Edge - $basearchbaseurl=https://download.docker.com/linux/centos/7/$basearch/edgeenabled=0gpgcheck=1gpgkey=https://download.docker.com/linux/centos/gpg[docker-ce-edge-debuginfo]name=Docker CE Edge - Debuginfo $basearchbaseurl=https://download.docker.com/linux/centos/7/debug-$basearch/edgeenabled=0gpgcheck=1gpgkey=https://download.docker.com/linux/centos/gpg[docker-ce-edge-source]name=Docker CE Edge - Sourcesbaseurl=https://download.docker.com/linux/centos/7/source/edgeenabled=0gpgcheck=1gpgkey=https://download.docker.com/linux/centos/gpg[docker-ce-test]name=Docker CE Test - $basearchbaseurl=https://download.docker.com/linux/centos/7/$basearch/testenabled=0gpgcheck=1gpgkey=https://download.docker.com/linux/centos/gpg[docker-ce-test-debuginfo]name=Docker CE Test - Debuginfo $basearchbaseurl=https://download.docker.com/linux/centos/7/debug-$basearch/testenabled=0gpgcheck=1gpgkey=https://download.docker.com/linux/centos/gpg[docker-ce-test-source]name=Docker CE Test - Sourcesbaseurl=https://download.docker.com/linux/centos/7/source/testenabled=0gpgcheck=1gpgkey=https://download.docker.com/linux/centos/gpg
三、安裝docker:
sudo yum install docker-ceLoaded plugins: fastestmirror, langpacksLoading mirror speeds from cached hostfileResolving Dependencies--> Running transaction check---> Package docker-ce.x86_64 0:17.03.1.ce-1.el7.centos will be installed--> Processing Dependency: docker-ce-selinux >= 17.03.1.ce-1.el7.centos for package: docker-ce-17.03.1.ce-1.el7.centos.x86_64--> Running transaction check---> Package docker-ce-selinux.noarch 0:17.03.1.ce-1.el7.centos will be installed--> Finished Dependency ResolutionDependencies Resolved===================================================================================================================================== Package Arch Version Repository Size=====================================================================================================================================Installing: docker-ce x86_64 17.03.1.ce-1.el7.centos docker-ce-stable 19 MInstalling for dependencies: docker-ce-selinux noarch 17.03.1.ce-1.el7.centos docker-ce-stable 28 kTransaction Summary=====================================================================================================================================Install 1 Package (+1 Dependent package)Total download size: 19 MInstalled size: 19 MIs this ok [y/d/N]: y
四、直接下載rpm包的方式來安裝：
1、我在安裝docker的時候發現下載的速度只有3kB/s 然而文件大小有19M；就在我感覺安裝無望的時候、我機智的想到了自己直接把rpm下載下來
看了下docker.repo 、發現centos7的源地址是 https://download.docker.com/linux/centos/7/$basearch/stable 所以我只要去
https://download.docker.com/linux/centos/7/x86_64/stable/Packages/
用迅雷(我是會員有加速)把rpm包下載下來就行了
下載如下文件：
docker-ce-17.03.0.ce-1.el7.centos.x86_64.rpm
docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch.rpm
五、安裝docker:
lltotal 19096-rwxrwxrwx 1 jianglexing jianglexing 19521288 May 30 20:05 docker-ce-17.03.0.ce-1.el7.centos.x86_64.rpm-rw-r--r-- 1 jianglexing jianglexing 29108 May 30 20:15 docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch.rpm[root@workstudio docker]# yum localinstall *Loaded plugins: fastestmirror, langpacksExamining docker-ce-17.03.0.ce-1.el7.centos.x86_64.rpm: docker-ce-17.03.0.ce-1.el7.centos.x86_64Marking docker-ce-17.03.0.ce-1.el7.centos.x86_64.rpm to be installedExamining docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch.rpm: docker-ce-selinux-17.03.0.ce-1.el7.centos.noarchMarking docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch.rpm to be installedResolving Dependencies--> Running transaction check---> Package docker-ce.x86_64 0:17.03.0.ce-1.el7.centos will be installed---> Package docker-ce-selinux.noarch 0:17.03.0.ce-1.el7.centos will be installed--> Finished Dependency ResolutionDependencies Resolved===================================================================================================================================== Package Arch Version Repository Size=====================================================================================================================================Installing: docker-ce x86_64 17.03.0.ce-1.el7.centos /docker-ce-17.03.0.ce-1.el7.centos.x86_64 65 M docker-ce-selinux noarch 17.03.0.ce-1.el7.centos /docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch 43 kTransaction Summary=====================================================================================================================================Install 2 PackagesTotal size: 65 MInstalled size: 65 MIs this ok [y/d/N]: yDownloading packages:Running transaction checkRunning transaction testTransaction test succeededRunning transaction Installing : docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch 1/2 setsebool: SELinux is disabled.libsemanage.semanage_direct_install_info: Overriding docker module at lower priority 100 with module at priority 400. Installing : docker-ce-17.03.0.ce-1.el7.centos.x86_64 2/2 Verifying : docker-ce-17.03.0.ce-1.el7.centos.x86_64 1/2 Verifying : docker-ce-selinux-17.03.0.ce-1.el7.centos.noarch 2/2 Installed: docker-ce.x86_64 0:17.03.0.ce-1.el7.centos docker-ce-selinux.noarch 0:17.03.0.ce-1.el7.centos Complete!
六、啟動docker:
[root@workstudio docker]# systemctl start docker[root@workstudio docker]# ps -ef | grep dockerroot 4458 1 1 20:22 ? 00:00:00 /usr/bin/dockerdroot 4465 4458 0 20:22 ? 00:00:00 docker-containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --metrics-interval=0 --start-timeout 2m --state-dir /var/run/docker/libcontainerd/containerd --shim docker-containerd-shim --runtime docker-runcroot 4589 4333 0 20:22 pts/1 00:00:00 grep --color=auto docker
七、測試docker是否能成功運行：
[root@workstudio docker]# docker run hello-worldUnable to find image 'hello-world:latest' locallylatest: Pulling from library/hello-world78445dd45222: Pull complete Digest: sha256:c5515758d4c5e1e838e9cd307f6c6a0d620b5e07e6f927b07d05f6d12a1ac8d7Status: Downloaded newer image for hello-world:latestHello 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. 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 bashShare images, automate workflows, and more with a free Docker ID: https://cloud.docker.com/For more examples and ideas, visit: https://docs.docker.com/engine/userguide/
如下是第一次運行hello-world 這個docker-image 由于它還不存在于本地、所以要下載它、這可能要用一點時間！
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持VEVB武林網。
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