Docker 安装部署（CentOS 8）

以下所有操作都是基于 CentOS 8 系统进行操作的。安装的 Docker 版本为 25.0.5-1.el8。

1、卸载老版本 Docker

sudo yum remove docker \docker-client \docker-client-latest \docker-common \docker-latest \docker-latest-logrotate \docker-logrotate \docker-engine

注：如果是之前未安装过了忽略此步

2、设置 Docker 安装源

# 安装 yum-utils，如果已安装可以忽略
sudo yum install -y yum-utils
# 以下为国内镜像，可以提升下载速度
sudo yum-config-manager --add-repo https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo

3、查看镜像源中可安装的版本

yum list docker-ce --showduplicates | sort -r

4、选择指定的版本（25.0.5-1.el8）进行安装

sudo yum install -y docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io docker-buildx-plugin docker-compose-plugin

选择指定的版本号替换<VERSION_STRING>，如我的安装是25.0.5-1.el8

sudo yum install -y docker-ce-25.0.5-1.el8 docker-ce-cli-25.0.5-1.el8 containerd.io docker-buildx-plugin docker-compose-plugin

5、设置 Docker 镜像源

sudo cat >> /etc/docker/daemon.json << EOF
{"registry-mirrors": ["https://docker.mirrors.ustc.edu.cn/"]
}
EOF

6、加载服务配置，并使其生效

sudo systemctl daemon-reload

7、启动 Docker 服务

sudo systemctl restart docker

8、查看 Docker 信息

sudo docker info

Client:Context:    defaultDebug Mode: falsePlugins:app: Docker App (Docker Inc., v0.9.1-beta3)buildx: Build with BuildKit (Docker Inc., v0.6.3-docker)compose: Docker Compose (Docker Inc., v2.27.0)scan: Docker Scan (Docker Inc., v0.23.0)Server:Containers: 40Running: 16Paused: 0Stopped: 24Images: 13Server Version: 20.10.9Storage Driver: overlay2Backing Filesystem: xfsSupports d_type: trueNative Overlay Diff: trueuserxattr: falseLogging Driver: json-fileCgroup Driver: systemdCgroup Version: 1Plugins:Volume: localNetwork: bridge host ipvlan macvlan null overlayLog: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslogSwarm: inactiveRuntimes: io.containerd.runtime.v1.linux runc io.containerd.runc.v2Default Runtime: runcInit Binary: docker-initcontainerd version: 8b3b7ca2e5ce38e8f31a34f35b2b68ceb8470d89runc version: v1.1.12-0-g51d5e94init version: de40ad0Security Options:seccompProfile: defaultKernel Version: 3.10.0-1160.el8.x86_64Operating System: CentOS Linux 8 (Core)OSType: linuxArchitecture: x86_64CPUs: 4Total Memory: 3.682GiBName: k8sID: OGWE:A4BS:MOWR:VQUY:6Q7D:I5E6:4ZCW:JC3Z:G2PW:3P7X:F3YR:F62QDocker Root Dir: /var/lib/dockerDebug Mode: falseRegistry: https://index.docker.io/v1/Labels:Experimental: falseInsecure Registries:127.0.0.0/8Registry Mirrors:https://docker.mirrors.ustc.edu.cn/Live Restore Enabled: false