centos 7.x 安装docker最新版

1、查看centos版本

[root@localhost ~]# cat /etc/centos-release
CentOS Linux release 7.9.2009 (Core)
[root@localhost ~]# 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"

2、更新最新系统

sudo yum update -y[root@localhost ~]# sudo yum update -y
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile* base: mirrors.aliyun.com* extras: mirrors.aliyun.com* updates: mirrors.aliyun.com
No packages marked for update
[root@localhost ~]#

3、安装所需的软件包以允许yum使用HTTPS存储库

sudo yum install -y yum-utils device-mapper-persistent-data lvm2
或
sudo yum -y install yum-utils

4、添加Docker的官方GPG密钥

sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
或使用aliyun速度更快
sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

5、安装Docker Engine-Community

sudo yum install -y docker-ce docker-ce-cli containerd.io
或
sudo yum -y install docker-ce docker-ce-cli containerd.io

6、启动Docker服务查看状态开机启动服务

#启动Docker服务
sudo systemctl start docker#设置Docker服务开机自启动
sudo systemctl enable docker# 查看docker服务状态
sudo systemctl status docker

7、查看docker 版本信息

[root@localhost ~]# docker -v
Docker version 24.0.7, build afdd53b
[root@localhost ~]# docker --version
Docker version 24.0.7, build afdd53b
[root@localhost ~]# docker version
Client: Docker Engine - CommunityVersion:           24.0.7API version:       1.43Go version:        go1.20.10Git commit:        afdd53bBuilt:             Thu Oct 26 09:11:35 2023OS/Arch:           linux/amd64Context:           defaultServer: Docker Engine - CommunityEngine:Version:          24.0.7API version:      1.43 (minimum version 1.12)Go version:       go1.20.10Git commit:       311b9ffBuilt:            Thu Oct 26 09:10:36 2023OS/Arch:          linux/amd64Experimental:     falsecontainerd:Version:          1.6.26GitCommit:        3dd1e886e55dd695541fdcd67420c2888645a495runc:Version:          1.1.10GitCommit:        v1.1.10-0-g18a0cb0docker-init:Version:          0.19.0GitCommit:        de40ad0
[root@localhost ~]#

8、docker 官方案例验证Docker是否成功安装

sudo docker run hello-world[root@localhost ~]# sudo docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
c1ec31eb5944: Pull complete 
Digest: sha256:ac69084025c660510933cca701f615283cdbb3aa0963188770b54c31c8962493
Status: 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.(amd64)3. The Docker daemon created a new container from that image which runs theexecutable that produces the output you are currently reading.4. The Docker daemon streamed that output to the Docker client, which sent itto 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://hub.docker.com/For more examples and ideas, visit:https://docs.docker.com/get-started/

9、设置国内镜像，加速镜像拉取速度

打开 Docker 配置文件 /etc/docker/daemon.json，如果该文件不存在，则可以创建该文件。
在该配置文件中添加以下内容：
{
"registry-mirrors": ["http://hub-mirror.c.163.com","https://registry.docker-cn.com","https://docker.mirrors.ustc.edu.cn"]
}作者：啊布多
链接：https://www.jianshu.com/p/fb74dd78e92a
来源：简书
著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。
如果要使用多个镜像源，可以在 "registry-mirrors" 数组中添加多个镜像源地址，以英文逗号分隔。
保存配置文件，并重启 Docker 服务，以使配置生效。可以使用以下命令重启 Docker 服务：
sudo systemctl restart docker
如果使用的是 Ubuntu 14.04 等旧版系统，可以使用以下命令重启 Docker 服务：
sudo service docker restart
配置完成后，可以使用 docker pull 命令测试是否成功使用了国内镜像源。例如，可以使用以下命令拉取官方的 Ubuntu 镜像：
docker pull ubuntu
如果使用了正确的国内镜像源地址，镜像的下载速度应该比官方源快很多。[root@localhost ~]# vim /etc/docker/daemon.json
[root@localhost ~]# systemctl restart docker 
[root@localhost ~]# docker info
Client: Docker Engine - CommunityVersion:    24.0.7Context:    defaultDebug Mode: falsePlugins:buildx: Docker Buildx (Docker Inc.)Version:  v0.11.2Path:     /usr/libexec/docker/cli-plugins/docker-buildxcompose: Docker Compose (Docker Inc.)Version:  v2.21.0Path:     /usr/libexec/docker/cli-plugins/docker-composeServer:Containers: 1Running: 0Paused: 0Stopped: 1Images: 1Server Version: 24.0.7Storage Driver: overlay2Backing Filesystem: xfsSupports d_type: trueUsing metacopy: falseNative Overlay Diff: trueuserxattr: falseLogging Driver: json-fileCgroup Driver: cgroupfsCgroup Version: 1Plugins:Volume: localNetwork: bridge host ipvlan macvlan null overlayLog: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslogSwarm: inactiveRuntimes: io.containerd.runc.v2 runcDefault Runtime: runcInit Binary: docker-initcontainerd version: 3dd1e886e55dd695541fdcd67420c2888645a495runc version: v1.1.10-0-g18a0cb0init version: de40ad0Security Options:seccompProfile: builtinKernel Version: 3.10.0-1160.105.1.el7.x86_64Operating System: CentOS Linux 7 (Core)OSType: linuxArchitecture: x86_64CPUs: 1Total Memory: 972.1MiBName: localhost.localdomainID: 3aef30e8-073c-47a1-8c41-10cf608838ecDocker Root Dir: /var/lib/dockerDebug Mode: falseExperimental: falseInsecure Registries:127.0.0.0/8Registry Mirrors:http://hub-mirror.c.163.com/https://registry.docker-cn.com/https://docker.mirrors.ustc.edu.cn/Live Restore Enabled: false[root@localhost ~]# 查看docker info 可以查看到