Docker YUM安装

1. 安装相关依赖

$ yum install -y yum-utils device-mapper-persistent-data lvm2

2. 配置Docker镜像源

$ yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
$ sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo
$ yum makecache fast

查找docker版本
$ yum list docker-ce --showduplicates  | sort -r

3. 安装docker

安装指定版本docker
$ yum install docker-ce-24.0.6-1.el7 -y

4. 配置镜像加速

$ cat >/etc/docker/daemon.json<< EOF
{
"registry-mirrors": ["https://hub-mirror.c.163.com","https://mirror.baidubce.com","https://mirror.ccs.tencentyun.com"],
"log-driver":"json-file",  # 设置日志输出格式
"log-opts":{
"max-size" :"50m",         #保留日志大小为50MB
"max-file":"3"             # 保留日志个数
}
}
EOF

4. 启动docker并配置开机自启

$ systemctl enable --now docker
$ systemctl status docker

5. 验证
   拉取hello-world镜像并执行，会输出一些描述

$ docker pull hello-world
$ docker run hello-world

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/