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...","2026-09-12T08:28:23.213491Z",[87],[],{"permalink":767,"excerpt":762,"lastModifyTime":768,"phase":118},"\u002Farchives\u002Fdocker-install-compose","2026-09-13T05:20:22.953112Z",[770],{"metadata":771,"spec":772,"status":773,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":775,"spec":778,"status":787,"categories":790},{"name":776,"creationTimestamp":777},"post-docker-install-cassandra-03d02f70","2026-09-12T08:28:22.473185Z",{"title":779,"slug":780,"cover":781,"excerpt":782,"publishTime":784,"categories":785,"tags":786,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker 安装 Cassandra 数据库（图文教程）","docker-install-cassandra","\u002Fupload\u002F172179052498364.jpg",{"raw":783,"autoGenerate":94},"本小节中，我们将通过 Docker 把本地的 Cassandra 测试环境搭建起来。Apache Cassandra 是一个开源的分布式 NoSQL（Not Only SQL）数据库管理系统，专为处理大规模数据量和高写入频率的工作负载而设计。","2026-09-12T08:28:22.546599Z",[87],[],{"permalink":788,"excerpt":783,"lastModifyTime":789,"phase":118},"\u002Farchives\u002Fdocker-install-cassandra","2026-09-13T05:20:25.158312Z",[791],{"metadata":792,"spec":793,"status":794,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":796,"spec":799,"status":808,"categories":811},{"name":797,"creationTimestamp":798},"post-docker-image-e76362b6","2026-09-12T08:28:21.839619Z",{"title":800,"slug":801,"cover":802,"excerpt":803,"publishTime":805,"categories":806,"tags":807,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker 镜像","docker-image","\u002Fupload\u002Fcover-c40a46c7dc01.png",{"raw":804,"autoGenerate":94},"镜像是 Docker 的三个基本概念之一，它是 Docker 运行容器的前提，仓库是存放镜像的场所。Docker 镜像是一个特殊的文件系统，除了提供容器运行时所需的程序、库、资源、配置等文件外...","2026-09-12T08:28:21.903334Z",[87],[],{"permalink":809,"excerpt":804,"lastModifyTime":810,"phase":118},"\u002Farchives\u002Fdocker-image","2026-09-14T00:21:13.584509Z",[812],{"metadata":813,"spec":814,"status":815,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":817,"spec":820,"status":829,"categories":832},{"name":818,"creationTimestamp":819},"post-docker-export-import-container-541bad36","2026-09-12T08:28:21.240842Z",{"title":821,"slug":822,"cover":823,"excerpt":824,"publishTime":826,"categories":827,"tags":828,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker 导出&导入容器","docker-export-import-container","\u002Fupload\u002F165698500345714.jpg",{"raw":825,"autoGenerate":94},"使用 docker export 命令可以导出容器，比如想导出下面的 Redis 容器，执行  docker export 9e8d11aeef0c > redis.tar 命令即可，导出的 tar 包快照存于当前目录下...","2026-09-12T08:28:21.304957Z",[87],[],{"permalink":830,"excerpt":825,"lastModifyTime":831,"phase":118},"\u002Farchives\u002Fdocker-export-import-container","2026-09-13T05:20:25.998391Z",[833],{"metadata":834,"spec":835,"status":836,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":838,"spec":841,"status":850,"categories":853},{"name":839,"creationTimestamp":840},"post-docker-exec-container-4e90d582","2026-09-12T08:28:20.597994Z",{"title":842,"slug":843,"cover":844,"excerpt":845,"publishTime":847,"categories":848,"tags":849,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker 进入容器命令","docker-exec-container","\u002Fupload\u002F165685069315125.jpg",{"raw":846,"autoGenerate":94},"要想进入到已运行的 Docker 容器，主要有如下两种方式，第一种使用 docker exec命令，第二种使用 docker attach 命令...","2026-09-12T08:28:20.663925Z",[87],[],{"permalink":851,"excerpt":846,"lastModifyTime":852,"phase":118},"\u002Farchives\u002Fdocker-exec-container","2026-09-13T05:20:26.724480Z",[854],{"metadata":855,"spec":856,"status":857,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":859,"spec":862,"status":871,"categories":875},{"name":860,"creationTimestamp":861},"post-docker-download-image-bae8d2fe","2026-09-12T08:28:19.928197Z",{"title":863,"slug":864,"cover":865,"excerpt":866,"publishTime":868,"categories":869,"tags":870,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker 拉取&下载镜像","docker-download-image","\u002Fupload\u002F165648522762749.jpg",{"raw":867,"autoGenerate":94},"大家好，本文中，我们将需要学习 Docker 如何拉取&下载镜像？想要在本地运行 Docker 容器，需要先下载 Docker 镜像。默认情况下，Docker 会尝试从 Docker Hub 镜像仓库下载。另外，用户也可以自定义配置镜像仓库地址 ...","2026-09-12T08:28:19.996485Z",[87],[],{"permalink":872,"excerpt":873,"lastModifyTime":874,"phase":118},"\u002Farchives\u002Fdocker-download-image","本文中，我们将需要学习 Docker 如何拉取&下载镜像？想要在本地运行 Docker 容器，需要先下载 Docker 镜像。默认情况下，Docker 会尝试从 Docker Hub 镜像仓库下载。另外，用户也可以自定义配置镜像仓库地址 ...","2026-09-13T05:20:27.610905Z",[876],{"metadata":877,"spec":878,"status":879,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":881,"spec":884,"status":893,"categories":896},{"name":882,"creationTimestamp":883},"post-docker-delete-container-561986e7","2026-09-12T08:28:19.306727Z",{"title":885,"slug":886,"cover":887,"excerpt":888,"publishTime":890,"categories":891,"tags":892,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker 删除容器","docker-delete-container","\u002Fupload\u002F165685534557469.jpg",{"raw":889,"autoGenerate":94},"本小节中将学习如何删除 Docker 容器。执行 docker container rm 命令可以删除一个已经停止运行的容器。举个例子，比如想要删除下面的 Redis 容器...","2026-09-12T08:28:19.369523Z",[87],[],{"permalink":894,"excerpt":889,"lastModifyTime":895,"phase":118},"\u002Farchives\u002Fdocker-delete-container","2026-09-13T05:20:28.217987Z",[897],{"metadata":898,"spec":899,"status":900,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":902,"spec":905,"status":914,"categories":917},{"name":903,"creationTimestamp":904},"post-docker-container-bccc3314","2026-09-12T08:28:18.682458Z",{"title":906,"slug":907,"cover":908,"excerpt":909,"publishTime":911,"categories":912,"tags":913,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker 容器","docker-container","\u002Fupload\u002Fcover-900796218579.png",{"raw":910,"autoGenerate":94},"通过 Docker 镜像运行的实例称之为容器，两者的关系就像是面向对象程序设计中的类和实例一样，镜像是静态的定义，容器是镜像运行时的实体。容器可以被创建、启动、停止、删除、暂停等 ...","2026-09-12T08:28:18.747600Z",[87],[],{"permalink":915,"excerpt":910,"lastModifyTime":916,"phase":118},"\u002Farchives\u002Fdocker-container","2026-09-14T00:21:13.932628Z",[918],{"metadata":919,"spec":920,"status":921,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":923,"spec":926,"status":935,"categories":938},{"name":924,"creationTimestamp":925},"post-docker-compose-example-5841178a","2026-09-12T08:28:18.028525Z",{"title":927,"slug":928,"cover":929,"excerpt":930,"publishTime":932,"categories":933,"tags":934,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker Compose 实战 web 服务","docker-compose-example","\u002Fupload\u002F166467690411164.png",{"raw":931,"autoGenerate":94},"本小节中，我们将通过 Docker Compose 搭建一个简单的网站。这个简单的网站需实现功能：每当用户访问时，页面显示总访问次数 ...","2026-09-12T08:28:18.096894Z",[87],[],{"permalink":936,"excerpt":931,"lastModifyTime":937,"phase":118},"\u002Farchives\u002Fdocker-compose-example","2026-09-13T05:20:32.006565Z",[939],{"metadata":940,"spec":941,"status":942,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":944,"spec":947,"status":955,"categories":958},{"name":945,"creationTimestamp":946},"post-docker-compose-commands-4193309c","2026-09-12T08:28:17.286875Z",{"title":948,"slug":949,"cover":236,"excerpt":950,"publishTime":952,"categories":953,"tags":954,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker Compose 命令大全","docker-compose-commands",{"raw":951,"autoGenerate":94},"本小节中，我们将学习 docker-compose 命令的使用，以及相关命令说明 ...","2026-09-12T08:28:17.374056Z",[87],[],{"permalink":956,"excerpt":951,"lastModifyTime":957,"phase":118},"\u002Farchives\u002Fdocker-compose-commands","2026-09-12T08:28:17.290603Z",[959],{"metadata":960,"spec":961,"status":962,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":964,"spec":967,"status":975,"categories":978},{"name":965,"creationTimestamp":966},"post-centos-install-docker-6341005b","2026-09-12T08:28:16.420289Z",{"title":968,"slug":969,"cover":236,"excerpt":970,"publishTime":972,"categories":973,"tags":974,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"CentOS 安装 Docker","centos-install-docker",{"raw":971,"autoGenerate":94},"Docker 支持以下 64 位的 CentOS 版本, 且内核版本不低于 3.10, 安装之前，请先卸载旧版本的 Docker ...","2026-09-12T08:28:16.506229Z",[87],[],{"permalink":976,"excerpt":971,"lastModifyTime":977,"phase":118},"\u002Farchives\u002Fcentos-install-docker","2026-09-12T08:28:16.424268Z",[979],{"metadata":980,"spec":981,"status":982,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":984,"spec":987,"status":996,"categories":999},{"name":985,"creationTimestamp":986},"post-aliyun-docker-registry-ffd7badf","2026-09-12T08:28:15.567618Z",{"title":988,"slug":989,"cover":990,"excerpt":991,"publishTime":993,"categories":994,"tags":995,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},"Docker 镜像加速器（配置阿里云）","aliyun-docker-registry","\u002Fupload\u002Fcover-0cca1a8bc3e5.png",{"raw":992,"autoGenerate":94},"Docker 默认情况下是从官方 Docker Hub 下载镜像，但是由于 Docker Hub 服务器在国外的缘故，国内用户在下载镜像的时候，会非常慢。想要解决这个问题，我们可以配置国内的镜像加速器，如阿里云加速器、DaoCloud、网易加速器、百度云加速器等等。接下来，我将演示如何配置阿里云镜像加速器。","2026-09-12T08:28:15.641590Z",[87],[],{"permalink":997,"excerpt":992,"lastModifyTime":998,"phase":118},"\u002Farchives\u002Faliyun-docker-registry","2026-09-14T00:21:14.569395Z",[1000],{"metadata":1001,"spec":1002,"status":1003,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"metadata":1005,"spec":1006,"status":1010,"categories":1011,"content":1016},{"name":965,"creationTimestamp":966},{"title":968,"slug":969,"cover":236,"excerpt":1007,"publishTime":972,"categories":1008,"tags":1009,"priority":27,"pinned":94,"deleted":94,"visible":112,"allowComment":113},{"raw":971,"autoGenerate":94},[87],[],{"permalink":976,"excerpt":971,"lastModifyTime":977,"phase":118},[1012],{"metadata":1013,"spec":1014,"status":1015,"postCount":97},{"name":87,"creationTimestamp":88},{"displayName":90,"slug":91,"cover":92,"description":93,"priority":27,"hideFromList":94,"preventParentPostCascadeQuery":94},{"permalink":96,"postCount":97,"visiblePostCount":97},{"content":1017,"raw":1017},"\u003Cp>Docker 支持以下 64 位的 CentOS 版本, 且内核版本不低于 3.10：\u003C\u002Fp>\n\u003Cul>\n\u003Cli>CentOS 7\u003C\u002Fli>\n\u003Cli>CentOS 8\u003C\u002Fli>\n\u003Cli>更高版本...\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3>卸载旧版本\u003C\u002Fh3>\n\u003Cp>旧版本的 Docker 称为 \u003Ccode>docker\u003C\u002Fcode> 或者 \u003Ccode>docker-engine\u003C\u002Fcode>，如之前有安装，需使用以下命令卸载旧版本：\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ sudo yum remove docker \\\n                  docker-client \\\n                  docker-client-latest \\\n                  docker-common \\\n                  docker-latest \\\n                  docker-latest-logrotate \\\n                  docker-logrotate \\\n                  docker-selinux \\\n                  docker-engine-selinux \\\n                  docker-engine\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Ch2>开始安装\u003C\u002Fh2>\n\u003Ch3>使用 yum 安装\u003C\u002Fh3>\n\u003Cp>执行以下命令安装依赖包：\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ sudo yum install -y yum-utils\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>鉴于国内网络问题，强烈建议使用国内源，官方源请在注释中查看。\u003C\u002Fp>\n\u003Cp>执行下面的命令添加 \u003Ccode>yum\u003C\u002Fcode> 软件源：\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ sudo yum-config-manager \\\n    --add-repo \\\n    https:\u002F\u002Fmirrors.aliyun.com\u002Fdocker-ce\u002Flinux\u002Fcentos\u002Fdocker-ce.repo\n\n$ sudo sed -i 's\u002Fdownload.docker.com\u002Fmirrors.aliyun.com\\\u002Fdocker-ce\u002Fg' \u002Fetc\u002Fyum.repos.d\u002Fdocker-ce.repo\n\n# 官方源\n# $ sudo yum-config-manager \\\n#     --add-repo \\\n#     https:\u002F\u002Fdownload.docker.com\u002Flinux\u002Fcentos\u002Fdocker-ce.repo\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>如果需要测试版本的 Docker 请执行以下命令：\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ sudo yum-config-manager --enable docker-ce-test\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Ch4>安装 Docker\u003C\u002Fh4>\n\u003Cp>更新 \u003Ccode>yum\u003C\u002Fcode> 软件源缓存，并安装 \u003Ccode>docker-ce\u003C\u002Fcode>。\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ sudo yum install docker-ce docker-ce-cli containerd.io\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Ch2>CentOS8 额外设置\u003C\u002Fh2>\n\u003Cp>由于 CentOS8 防火墙使用了 \u003Ccode>nftables\u003C\u002Fcode>，但 Docker 尚未支持 \u003Ccode>nftables\u003C\u002Fcode>， 我们可以使用如下设置使用 \u003Ccode>iptables\u003C\u002Fcode>：\u003C\u002Fp>\n\u003Cp>更改 \u003Ccode>\u002Fetc\u002Ffirewalld\u002Ffirewalld.conf\u003C\u002Fcode>\u003C\u002Fp>\n\u003Cpre>\u003Ccode># FirewallBackend=nftables\nFirewallBackend=iptables\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>或者执行如下命令：\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ firewall-cmd --permanent --zone=trusted --add-interface=docker0\n\n$ firewall-cmd --reload\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Ch2>使用脚本安装\u003C\u002Fh2>\n\u003Cp>在测试或开发环境中 Docker 官方为了简化安装流程，提供了一套便捷的安装脚本，CentOS 系统上可以使用这套脚本安装，另外可以通过 \u003Ccode>--mirror\u003C\u002Fcode> 选项使用国内源进行安装：\u003C\u002Fp>\n\u003Cblockquote>\n\u003Cp>若你想安装测试版的 Docker, 请从 test.docker.com 获取脚本\u003C\u002Fp>\n\u003C\u002Fblockquote>\n\u003Cpre>\u003Ccode># $ curl -fsSL test.docker.com -o get-docker.sh\n$ curl -fsSL get.docker.com -o get-docker.sh\n$ sudo sh get-docker.sh --mirror Aliyun\n# $ sudo sh get-docker.sh --mirror AzureChinaCloud\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>执行这个命令后，脚本就会自动的将一切准备工作做好，并且把 Docker 的稳定(stable)版本安装在系统中。\u003C\u002Fp>\n\u003Ch2>启动 Docker\u003C\u002Fh2>\n\u003Cpre>\u003Ccode>$ sudo systemctl enable docker\n$ sudo systemctl start docker\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Ch2>建立 docker 用户组\u003C\u002Fh2>\n\u003Cp>默认情况下，\u003Ccode>docker\u003C\u002Fcode> 命令会使用 Unix socket 与 Docker 引擎通讯。而只有 \u003Ccode>root\u003C\u002Fcode> 用户和 \u003Ccode>docker\u003C\u002Fcode> 组的用户才可以访问 Docker 引擎的 Unix socket。出于安全考虑，一般 Linux 系统上不会直接使用 \u003Ccode>root\u003C\u002Fcode> 用户。因此，更好地做法是将需要使用 \u003Ccode>docker\u003C\u002Fcode> 的用户加入 \u003Ccode>docker\u003C\u002Fcode> 用户组。\u003C\u002Fp>\n\u003Cp>建立 \u003Ccode>docker\u003C\u002Fcode> 组：\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ sudo groupadd docker\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>将当前用户加入 \u003Ccode>docker\u003C\u002Fcode> 组：\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ sudo usermod -aG docker $USER\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>退出当前终端并重新登录，进行如下测试。\u003C\u002Fp>\n\u003Ch2>验证 Docker 是否安装成功\u003C\u002Fh2>\n\u003Cpre>\u003Ccode>$ docker run --rm hello-world\n\nUnable to find image 'hello-world:latest' locally\nlatest: Pulling from library\u002Fhello-world\nb8dfde127a29: Pull complete\nDigest: sha256:308866a43596e83578c7dfa15e27a73011bdd402185a84c5cd7f32a88b501a24\nStatus: Downloaded newer image for hello-world:latest\n\nHello from Docker!\nThis message shows that your installation appears to be working correctly.\n\nTo generate this message, Docker took the following steps:\n 1. The Docker client contacted the Docker daemon.\n 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.\n    (amd64)\n 3. The Docker daemon created a new container from that image which runs the\n    executable that produces the output you are currently reading.\n 4. The Docker daemon streamed that output to the Docker client, which sent it\n    to your terminal.\n\nTo try something more ambitious, you can run an Ubuntu container with:\n $ docker run -it ubuntu bash\n\nShare images, automate workflows, and more with a free Docker ID:\n https:\u002F\u002Fhub.docker.com\u002F\n\nFor more examples and ideas, visit:\n https:\u002F\u002Fdocs.docker.com\u002Fget-started\u002F\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>若能正常输出以上信息，则说明安装成功。\u003C\u002Fp>\n\u003Ch2>镜像加速器\u003C\u002Fh2>\n\u003Cp>如果发现后续下载镜像速度非常慢，可配置国内的镜像加速器，配置教程参考下面链接：\u003C\u002Fp>\n\u003Cp>Docker 镜像加速器\u003Cspan>\u003Csvg xmlns=\"http:\u002F\u002Fwww.w3.org\u002F2000\u002Fsvg\" style=\"color: #aaa; margin-left: 3px;\" aria-hidden=\"true\" focusable=\"false\" x=\"0px\" y=\"0px\" viewBox=\"0 0 100 100\" width=\"15\" height=\"15\" class=\"icon outbound\">\u003Cpath fill=\"currentColor\" d=\"M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z\">\u003C\u002Fpath> \u003Cpolygon fill=\"currentColor\" points=\"45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9\">\u003C\u002Fpolygon>\u003C\u002Fsvg> \u003Cspan class=\"sr-only\">\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fp>\n\u003Ch2>你可能会遇到的问题\u003C\u002Fh2>\n\u003Cp>如果在 CentOS 使用 Docker 看到下面的这些警告信息：\u003C\u002Fp>\n\u003Cpre>\u003Ccode>WARNING: bridge-nf-call-iptables is disabled\nWARNING: bridge-nf-call-ip6tables is disabled\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>请添加内核配置参数以启用这些功能。\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ sudo tee -a \u002Fetc\u002Fsysctl.conf <<-EOF\nnet.bridge.bridge-nf-call-ip6tables = 1\nnet.bridge.bridge-nf-call-iptables = 1\nEOF\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>然后重新加载 \u003Ccode>sysctl.conf\u003C\u002Fcode> 即可\u003C\u002Fp>\n\u003Cpre>\u003Ccode>$ sudo sysctl -p\n\u003C\u002Fcode>\u003C\u002Fpre>\n15:T4718,\u003Ch2 id=\"toc-0\">准备工作\u003C\u002Fh2>\n\u003Ch3 id=\"toc-1\">操作系统要求\u003C\u002Fh3>\n\u003Cp>Docker 支持以下 64 位的 CentOS 版本, 且内核版本不低于 3.10：\u003C\u002Fp>\n\u003Cul>\n\u003Cli>CentOS 7\u003C\u002Fli>\n\u003Cli>CentOS 8\u003C\u002Fli>\n\u003Cli>更高版本...\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"toc-2\">卸载旧版本\u003C\u002Fh3>\n\u003Cp>旧版本的 Docker 称为 \u003Ccode>docker\u003C\u002Fcode> 或者 \u003Ccode>docker-engine\u003C\u002Fcode>，如之前有安装，需使用以下命令卸载旧版本：\u003C\u002Fp>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%24%20sudo%20yum%20remove%20docker%20%5C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20docker-client%20%5C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20docker-client-latest%20%5C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20docker-common%20%5C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20docker-latest%20%5C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20docker-latest-logrotate%20%5C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20docker-logrotate%20%5C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20docker-selinux%20%5C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20docker-engine-selinux%20%5C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20docker-engine%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> yum remove \u003Cspan class=\"token function\">docker\u003C\u002Fspan> \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n                  docker-client \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n                  docker-client-latest \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n                  docker-common \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n                  docker-latest \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n                  docker-latest-logrotate \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n                  docker-logrotate \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n                  docker-selinux \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n                  docker-engine-selinux \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n                  docker-engine\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Ch2 id=\"toc-3\">开始安装\u003C\u002Fh2>\n\u003Ch3 id=\"toc-4\">使用 yum 安装\u003C\u002Fh3>\n\u003Cp>执行以下命令安装依赖包：\u003C\u002Fp>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%24%20sudo%20yum%20install%20-y%20yum-utils%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> yum \u003Cspan class=\"token function\">install\u003C\u002Fspan> \u003Cspan class=\"token parameter variable\">-y\u003C\u002Fspan> yum-utils\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Cp>鉴于国内网络问题，强烈建议使用国内源，官方源请在注释中查看。\u003C\u002Fp>\n\u003Cp>执行下面的命令添加 \u003Ccode>yum\u003C\u002Fcode> 软件源：\u003C\u002Fp>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%24%20sudo%20yum-config-manager%20%5C%0A%20%20%20%20--add-repo%20%5C%0A%20%20%20%20https%3A%2F%2Fmirrors.aliyun.com%2Fdocker-ce%2Flinux%2Fcentos%2Fdocker-ce.repo%0A%0A%24%20sudo%20sed%20-i%20's%2Fdownload.docker.com%2Fmirrors.aliyun.com%5C%2Fdocker-ce%2Fg'%20%2Fetc%2Fyum.repos.d%2Fdocker-ce.repo%0A%0A%23%20%E5%AE%98%E6%96%B9%E6%BA%90%0A%23%20%24%20sudo%20yum-config-manager%20%5C%0A%23%20%20%20%20%20--add-repo%20%5C%0A%23%20%20%20%20%20https%3A%2F%2Fdownload.docker.com%2Flinux%2Fcentos%2Fdocker-ce.repo%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> yum-config-manager \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n    --add-repo \u003Cspan class=\"token punctuation\">\\\u003C\u002Fspan>\n    https:\u002F\u002Fmirrors.aliyun.com\u002Fdocker-ce\u002Flinux\u002Fcentos\u002Fdocker-ce.repo\n\n$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> \u003Cspan class=\"token function\">sed\u003C\u002Fspan> \u003Cspan class=\"token parameter variable\">-i\u003C\u002Fspan> \u003Cspan class=\"token string\">'s\u002Fdownload.docker.com\u002Fmirrors.aliyun.com\\\u002Fdocker-ce\u002Fg'\u003C\u002Fspan> \u002Fetc\u002Fyum.repos.d\u002Fdocker-ce.repo\n\n\u003Cspan class=\"token comment\"># 官方源\u003C\u002Fspan>\n\u003Cspan class=\"token comment\"># $ sudo yum-config-manager \\\u003C\u002Fspan>\n\u003Cspan class=\"token comment\">#     --add-repo \\\u003C\u002Fspan>\n\u003Cspan class=\"token comment\">#     https:\u002F\u002Fdownload.docker.com\u002Flinux\u002Fcentos\u002Fdocker-ce.repo\u003C\u002Fspan>\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Cp>如果需要测试版本的 Docker 请执行以下命令：\u003C\u002Fp>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%24%20sudo%20yum-config-manager%20--enable%20docker-ce-test%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> yum-config-manager \u003Cspan class=\"token parameter variable\">--enable\u003C\u002Fspan> docker-ce-test\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Ch4 id=\"toc-5\">安装 Docker\u003C\u002Fh4>\n\u003Cp>更新 \u003Ccode>yum\u003C\u002Fcode> 软件源缓存，并安装 \u003Ccode>docker-ce\u003C\u002Fcode>。\u003C\u002Fp>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%24%20sudo%20yum%20install%20docker-ce%20docker-ce-cli%20containerd.io%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> yum \u003Cspan class=\"token function\">install\u003C\u002Fspan> docker-ce docker-ce-cli containerd.io\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Ch2 id=\"toc-6\">CentOS8 额外设置\u003C\u002Fh2>\n\u003Cp>由于 CentOS8 防火墙使用了 \u003Ccode>nftables\u003C\u002Fcode>，但 Docker 尚未支持 \u003Ccode>nftables\u003C\u002Fcode>， 我们可以使用如下设置使用 \u003Ccode>iptables\u003C\u002Fcode>：\u003C\u002Fp>\n\u003Cp>更改 \u003Ccode>\u002Fetc\u002Ffirewalld\u002Ffirewalld.conf\u003C\u002Fcode>\u003C\u002Fp>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%23%20FirewallBackend%3Dnftables%0AFirewallBackend%3Diptables%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">\u003Cspan class=\"token comment\"># FirewallBackend=nftables\u003C\u002Fspan>\n\u003Cspan class=\"token assign-left variable\">FirewallBackend\u003C\u002Fspan>\u003Cspan class=\"token operator\">=\u003C\u002Fspan>iptables\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Cp>或者执行如下命令：\u003C\u002Fp>\n\u003Cdiv class=\"language-sql\" data-ext=\"sql\" data-code=\"%24%20firewall-cmd%20--permanent%20--zone%3Dtrusted%20--add-interface%3Ddocker0%0A%0A%24%20firewall-cmd%20--reload%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-sql\">$ firewall\u003Cspan class=\"token operator\">-\u003C\u002Fspan>cmd \u003Cspan class=\"token comment\">--permanent --zone=trusted --add-interface=docker0\u003C\u002Fspan>\n\n$ firewall\u003Cspan class=\"token operator\">-\u003C\u002Fspan>cmd \u003Cspan class=\"token comment\">--reload\u003C\u002Fspan>\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Ch2 id=\"toc-7\">使用脚本安装\u003C\u002Fh2>\n\u003Cp>在测试或开发环境中 Docker 官方为了简化安装流程，提供了一套便捷的安装脚本，CentOS 系统上可以使用这套脚本安装，另外可以通过 \u003Ccode>--mirror\u003C\u002Fcode> 选项使用国内源进行安装：\u003C\u002Fp>\n\u003Cblockquote>\n\u003Cp>若你想安装测试版的 Docker, 请从 test.docker.com 获取脚本\u003C\u002Fp>\n\u003C\u002Fblockquote>\n\u003Cdiv class=\"language-sql\" data-ext=\"sql\" data-code=\"%23%20%24%20curl%20-fsSL%20test.docker.com%20-o%20get-docker.sh%0A%24%20curl%20-fsSL%20get.docker.com%20-o%20get-docker.sh%0A%24%20sudo%20sh%20get-docker.sh%20--mirror%20Aliyun%0A%23%20%24%20sudo%20sh%20get-docker.sh%20--mirror%20AzureChinaCloud%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-sql\">\u003Cspan class=\"token comment\"># $ curl -fsSL test.docker.com -o get-docker.sh\u003C\u002Fspan>\n$ curl \u003Cspan class=\"token operator\">-\u003C\u002Fspan>fsSL get\u003Cspan class=\"token punctuation\">.\u003C\u002Fspan>docker\u003Cspan class=\"token punctuation\">.\u003C\u002Fspan>com \u003Cspan class=\"token operator\">-\u003C\u002Fspan>o get\u003Cspan class=\"token operator\">-\u003C\u002Fspan>docker\u003Cspan class=\"token punctuation\">.\u003C\u002Fspan>sh\n$ sudo sh get\u003Cspan class=\"token operator\">-\u003C\u002Fspan>docker\u003Cspan class=\"token punctuation\">.\u003C\u002Fspan>sh \u003Cspan class=\"token comment\">--mirror Aliyun\u003C\u002Fspan>\n\u003Cspan class=\"token comment\"># $ sudo sh get-docker.sh --mirror AzureChinaCloud\u003C\u002Fspan>\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Cp>执行这个命令后，脚本就会自动的将一切准备工作做好，并且把 Docker 的稳定(stable)版本安装在系统中。\u003C\u002Fp>\n\u003Ch2 id=\"toc-8\">启动 Docker\u003C\u002Fh2>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%24%20sudo%20systemctl%20enable%20docker%0A%24%20sudo%20systemctl%20start%20docker%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> systemctl \u003Cspan class=\"token builtin class-name\">enable\u003C\u002Fspan> \u003Cspan class=\"token function\">docker\u003C\u002Fspan>\n$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> systemctl start \u003Cspan class=\"token function\">docker\u003C\u002Fspan>\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Ch2 id=\"toc-9\">建立 docker 用户组\u003C\u002Fh2>\n\u003Cp>默认情况下，\u003Ccode>docker\u003C\u002Fcode> 命令会使用 Unix socket 与 Docker 引擎通讯。而只有 \u003Ccode>root\u003C\u002Fcode> 用户和 \u003Ccode>docker\u003C\u002Fcode> 组的用户才可以访问 Docker 引擎的 Unix socket。出于安全考虑，一般 Linux 系统上不会直接使用 \u003Ccode>root\u003C\u002Fcode> 用户。因此，更好地做法是将需要使用 \u003Ccode>docker\u003C\u002Fcode> 的用户加入 \u003Ccode>docker\u003C\u002Fcode> 用户组。\u003C\u002Fp>\n\u003Cp>建立 \u003Ccode>docker\u003C\u002Fcode> 组：\u003C\u002Fp>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%24%20sudo%20groupadd%20docker%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> \u003Cspan class=\"token function\">groupadd\u003C\u002Fspan> \u003Cspan class=\"token function\">docker\u003C\u002Fspan>\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Cp>将当前用户加入 \u003Ccode>docker\u003C\u002Fcode> 组：\u003C\u002Fp>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%24%20sudo%20usermod%20-aG%20docker%20%24USER%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> \u003Cspan class=\"token function\">usermod\u003C\u002Fspan> \u003Cspan class=\"token parameter variable\">-aG\u003C\u002Fspan> \u003Cspan class=\"token function\">docker\u003C\u002Fspan> \u003Cspan class=\"token environment constant\">$USER\u003C\u002Fspan>\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Cp>退出当前终端并重新登录，进行如下测试。\u003C\u002Fp>\n\u003Ch2 id=\"toc-10\">验证 Docker 是否安装成功\u003C\u002Fh2>\n\u003Cdiv class=\"language-sql\" data-ext=\"sql\" data-code=\"%24%20docker%20run%20--rm%20hello-world%0A%0AUnable%20to%20find%20image%20'hello-world%3Alatest'%20locally%0Alatest%3A%20Pulling%20from%20library%2Fhello-world%0Ab8dfde127a29%3A%20Pull%20complete%0ADigest%3A%20sha256%3A308866a43596e83578c7dfa15e27a73011bdd402185a84c5cd7f32a88b501a24%0AStatus%3A%20Downloaded%20newer%20image%20for%20hello-world%3Alatest%0A%0AHello%20from%20Docker!%0AThis%20message%20shows%20that%20your%20installation%20appears%20to%20be%20working%20correctly.%0A%0ATo%20generate%20this%20message%2C%20Docker%20took%20the%20following%20steps%3A%0A%201.%20The%20Docker%20client%20contacted%20the%20Docker%20daemon.%0A%202.%20The%20Docker%20daemon%20pulled%20the%20%22hello-world%22%20image%20from%20the%20Docker%20Hub.%0A%20%20%20%20(amd64)%0A%203.%20The%20Docker%20daemon%20created%20a%20new%20container%20from%20that%20image%20which%20runs%20the%0A%20%20%20%20executable%20that%20produces%20the%20output%20you%20are%20currently%20reading.%0A%204.%20The%20Docker%20daemon%20streamed%20that%20output%20to%20the%20Docker%20client%2C%20which%20sent%20it%0A%20%20%20%20to%20your%20terminal.%0A%0ATo%20try%20something%20more%20ambitious%2C%20you%20can%20run%20an%20Ubuntu%20container%20with%3A%0A%20%24%20docker%20run%20-it%20ubuntu%20bash%0A%0AShare%20images%2C%20automate%20workflows%2C%20and%20more%20with%20a%20free%20Docker%20ID%3A%0A%20https%3A%2F%2Fhub.docker.com%2F%0A%0AFor%20more%20examples%20and%20ideas%2C%20visit%3A%0A%20https%3A%2F%2Fdocs.docker.com%2Fget-started%2F%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-sql\">$ docker run \u003Cspan class=\"token comment\">--rm hello-world\u003C\u002Fspan>\n\nUnable \u003Cspan class=\"token keyword\">to\u003C\u002Fspan> find image \u003Cspan class=\"token string\">'hello-world:latest'\u003C\u002Fspan> locally\nlatest: Pulling \u003Cspan class=\"token keyword\">from\u003C\u002Fspan> library\u003Cspan class=\"token operator\">\u002F\u003C\u002Fspan>hello\u003Cspan class=\"token operator\">-\u003C\u002Fspan>world\nb8dfde127a29: Pull complete\nDigest: sha256:\u003Cspan class=\"token number\">308866\u003C\u002Fspan>a43596e83578c7dfa15e27a73011bdd402185a84c5cd7f32a88b501a24\n\u003Cspan class=\"token keyword\">Status\u003C\u002Fspan>: Downloaded newer image \u003Cspan class=\"token keyword\">for\u003C\u002Fspan> hello\u003Cspan class=\"token operator\">-\u003C\u002Fspan>world:latest\n\nHello \u003Cspan class=\"token keyword\">from\u003C\u002Fspan> Docker\u003Cspan class=\"token operator\">!\u003C\u002Fspan>\nThis message shows that your installation appears \u003Cspan class=\"token keyword\">to\u003C\u002Fspan> be working correctly\u003Cspan class=\"token punctuation\">.\u003C\u002Fspan>\n\n\u003Cspan class=\"token keyword\">To\u003C\u002Fspan> generate this message\u003Cspan class=\"token punctuation\">,\u003C\u002Fspan> Docker took the \u003Cspan class=\"token keyword\">following\u003C\u002Fspan> steps:\n \u003Cspan class=\"token number\">1.\u003C\u002Fspan> The Docker client contacted the Docker daemon\u003Cspan class=\"token punctuation\">.\u003C\u002Fspan>\n \u003Cspan class=\"token number\">2.\u003C\u002Fspan> The Docker daemon pulled the \u003Cspan class=\"token string\">\"hello-world\"\u003C\u002Fspan> image \u003Cspan class=\"token keyword\">from\u003C\u002Fspan> the Docker Hub\u003Cspan class=\"token punctuation\">.\u003C\u002Fspan>\n    \u003Cspan class=\"token punctuation\">(\u003C\u002Fspan>amd64\u003Cspan class=\"token punctuation\">)\u003C\u002Fspan>\n \u003Cspan class=\"token number\">3.\u003C\u002Fspan> The Docker daemon created a new container \u003Cspan class=\"token keyword\">from\u003C\u002Fspan> that image which runs the\n    executable that produces the output you are currently reading\u003Cspan class=\"token punctuation\">.\u003C\u002Fspan>\n \u003Cspan class=\"token number\">4.\u003C\u002Fspan> The Docker daemon streamed that output \u003Cspan class=\"token keyword\">to\u003C\u002Fspan> the Docker client\u003Cspan class=\"token punctuation\">,\u003C\u002Fspan> which sent it\n    \u003Cspan class=\"token keyword\">to\u003C\u002Fspan> your terminal\u003Cspan class=\"token punctuation\">.\u003C\u002Fspan>\n\n\u003Cspan class=\"token keyword\">To\u003C\u002Fspan> try something more ambitious\u003Cspan class=\"token punctuation\">,\u003C\u002Fspan> you can run an Ubuntu container \u003Cspan class=\"token keyword\">with\u003C\u002Fspan>:\n $ docker run \u003Cspan class=\"token operator\">-\u003C\u002Fspan>it ubuntu bash\n\n\u003Cspan class=\"token keyword\">Share\u003C\u002Fspan> images\u003Cspan class=\"token punctuation\">,\u003C\u002Fspan> automate workflows\u003Cspan class=\"token punctuation\">,\u003C\u002Fspan> \u003Cspan class=\"token operator\">and\u003C\u002Fspan> more \u003Cspan class=\"token keyword\">with\u003C\u002Fspan> a free Docker ID:\n https:\u003Cspan class=\"token comment\">\u002F\u002Fhub.docker.com\u002F\u003C\u002Fspan>\n\n\u003Cspan class=\"token keyword\">For\u003C\u002Fspan> more examples \u003Cspan class=\"token operator\">and\u003C\u002Fspan> ideas\u003Cspan class=\"token punctuation\">,\u003C\u002Fspan> visit:\n https:\u003Cspan class=\"token comment\">\u002F\u002Fdocs.docker.com\u002Fget-started\u002F\u003C\u002Fspan>\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Cp>若能正常输出以上信息，则说明安装成功。\u003C\u002Fp>\n\u003Ch2 id=\"toc-11\">镜像加速器\u003C\u002Fh2>\n\u003Cp>如果发现后续下载镜像速度非常慢，可配置国内的镜像加速器，配置教程参考下面链接：\u003C\u002Fp>\n\u003Cp>Docker 镜像加速器\u003Cspan>\u003Csvg xmlns=\"http:\u002F\u002Fwww.w3.org\u002F2000\u002Fsvg\" style=\"color: #aaa; margin-left: 3px;\" aria-hidden=\"true\" focusable=\"false\" x=\"0px\" y=\"0px\" viewBox=\"0 0 100 100\" width=\"15\" height=\"15\" class=\"icon outbound\">\u003Cpath fill=\"currentColor\" d=\"M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z\">\u003C\u002Fpath> \u003Cpolygon fill=\"currentColor\" points=\"45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9\">\u003C\u002Fpolygon>\u003C\u002Fsvg> \u003Cspan class=\"sr-only\">\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fp>\n\u003Ch2 id=\"toc-12\">你可能会遇到的问题\u003C\u002Fh2>\n\u003Cp>如果在 CentOS 使用 Docker 看到下面的这些警告信息：\u003C\u002Fp>\n\u003Cdiv class=\"language-sql\" data-ext=\"sql\" data-code=\"WARNING%3A%20bridge-nf-call-iptables%20is%20disabled%0AWARNING%3A%20bridge-nf-call-ip6tables%20is%20disabled%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-sql\">WARNING: bridge\u003Cspan class=\"token operator\">-\u003C\u002Fspan>nf\u003Cspan class=\"token operator\">-\u003C\u002Fspan>\u003Cspan class=\"token keyword\">call\u003C\u002Fspan>\u003Cspan class=\"token operator\">-\u003C\u002Fspan>iptables \u003Cspan class=\"token operator\">is\u003C\u002Fspan> disabled\nWARNING: bridge\u003Cspan class=\"token operator\">-\u003C\u002Fspan>nf\u003Cspan class=\"token operator\">-\u003C\u002Fspan>\u003Cspan class=\"token keyword\">call\u003C\u002Fspan>\u003Cspan class=\"token operator\">-\u003C\u002Fspan>ip6tables \u003Cspan class=\"token operator\">is\u003C\u002Fspan> disabled\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Cp>请添加内核配置参数以启用这些功能。\u003C\u002Fp>\n\u003Cdiv class=\"language-bash\" data-ext=\"bash\" data-code=\"%24%20sudo%20tee%20-a%20%2Fetc%2Fsysctl.conf%20%3C%3C-EOF%0Anet.bridge.bridge-nf-call-ip6tables%20%3D%201%0Anet.bridge.bridge-nf-call-iptables%20%3D%201%0AEOF%0A\">\n        \u003Cbutton class=\"vp-copy-code-button\" data-copy data-copied=\"已复制\" aria-label=\"复制代码\">\u003C\u002Fbutton>\n        \u003Cpre>\u003Ccode class=\"language-bash\">$ \u003Cspan class=\"token function\">sudo\u003C\u002Fspan> \u003Cspan class=\"token function\">tee\u003C\u002Fspan> \u003Cspan class=\"token parameter variable\">-a\u003C\u002Fspan> \u002Fetc\u002Fsysctl.conf \u003Cspan class=\"token operator\"><<-\u003C\u002Fspan>\u003Cspan class=\"token string\">EOF\nnet.bridge.bridge-nf-call-ip6tables = 1\nnet.bridge.bridge-nf-call-iptables = 1\nEOF\u003C\u002Fspan>\n\u003C\u002Fcode>\u003C\u002Fpre>\n      \u003C\u002Fdiv>\n\u003Cp>然后重新加载 \u003Ccode>sysctl.conf\u003C\u002Fcode> 即可\u003C\u002Fp>"]