Docker 的安装

Docker 的安装

环境准备

需要会一点Linux的基础CentOS7我使用Xshell来连接远程服务器

环境查看

#系统内核时3.10以上的 [root@iZ2zedtw714kk6kmn4p41qZ ~]# uname -r 3.10.0-1062.18.1.el7.x86_64 #系统版本 [root@iZ2zedtw714kk6kmn4p41qZ ~]# cat /etc/os-release NAME="CentOS Linux" VERSION="7 (Core)" ID="centos" ID_LIKE="rhel fedora" VERSION_ID="7" PRETTY_NAME="CentOS Linux 7 (Core)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:centos:centos:7" HOME_URL="https://www.centos.org/" BUG_REPORT_URL="https://bugs.centos.org/" CENTOS_MANTISBT_PROJECT="CentOS-7" CENTOS_MANTISBT_PROJECT_VERSION="7" REDHAT_SUPPORT_PRODUCT="centos" REDHAT_SUPPORT_PRODUCT_VERSION="7" [root@iZ2zedtw714kk6kmn4p41qZ ~]#

安装：

帮助文档：

#1.卸载旧的版本 [root@iZ2zedtw714kk6kmn4p41qZ ~]# yum remove docker \ > docker-client \ > docker-client-latest \ > docker-common \ > docker-latest \ > docker-latest-logrotate \ > docker-logrotate \ > docker-engine Loaded plugins: fastestmirror No Match for argument: docker No Match for argument: docker-client No Match for argument: docker-client-latest No Match for argument: docker-common No Match for argument: docker-latest No Match for argument: docker-latest-logrotate No Match for argument: docker-logrotate No Match for argument: docker-engine No Packages marked for removal #2.需要的安装包 yum install -y yum-utils #3.设置镜像的仓库 yum-config-manager \ --add-repo \ https://download.docker.com/linux/centos/docker-ce.repo #默认是从国外的 yum-config-manager \ --add-repo \ http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo #安装阿里云的（推荐使用） #更新yum的软件包索引 # yum makecache fast #4.安装docker docker-ce 社区版 ee企业版 yum install docker-ce docker-ce-cli containerd.io #5.启动docker systemctl start docker #6.使用docker version查看是否安装成功 [root@iZ2zedtw714kk6kmn4p41qZ ~]# docker version Client: Docker Engine - Community Version: 19.03.12 API version: 1.40 Go version: go1.13.10 Git commit: 48a66213fe Built: Mon Jun 22 15:46:54 2020 OS/Arch: linux/amd64 Experimental: false Server: Docker Engine - Community Engine: Version: 19.03.12 API version: 1.40 (minimum version 1.12) Go version: go1.13.10 Git commit: 48a66213fe Built: Mon Jun 22 15:45:28 2020 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.2.13 GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429 runc: Version: 1.0.0-rc10 GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd docker-init: Version: 0.18.0 GitCommit: fec3683 #7.测试hello-world [root@iZ2zedtw714kk6kmn4p41qZ ~]# docker run hello-world Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world 0e03bdcc26d7: Pull complete Digest: sha256:d58e752213a51785838f9eed2b7a498ffa1cb3aa7f946dda11af39286c3db9a9 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/ #8.查看一下下载的这个hello-world镜像 docker images [root@iZ2zedtw714kk6kmn4p41qZ ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest bf756fb1ae65 6 months ago 13.3kB

了解：卸载docker

#1.卸载依赖 yum remove docker-ce docker-ce-cli containerd.io #2.删除资源 rm-rf /var/lib/docker #/var/lib/docker是docker的默认工作路径