linux下安装docker

1. 使用yum安装docker

yum -y install docker

2. 启动docker

 systemctl start docker
 systemctl status docker

查看docker状态

常见问题:

1. docker pull 其他报该错
   [root@localhost bin]# docker pull elasticsearch:7.10.1
   Trying to pull repository docker.io/library/elasticsearch …
   Get https://registry-1.docker.io/v2/: x509: certificate has expired or is not yet valid

原因为系统时间错误，修复下时间

 yum -y install ntpdate
ntpdate cn.pool.ntp.org

3. docker-compose 安装

1、下载软件包
curl -L https://github.com/docker/compose/releases/download/2.2.3/docker-compose-uname -s-uname -m -o /usr/local/bin/docker-compose

2、添加可执行权限
chmod +x /usr/local/bin/docker-compose

3、检查安装
docker-compose -v

如果不能下载，也可以直接访问官网进行下载
访问：https://github.com/docker/compose/releases
选择对应版本下载下来
mv docker-compose-linux-x86_64 /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose

如果不能访问github的话，则采用第二种方式

yum -y install epel-release
yum install python-pip
pip install --upgrade pip
pip install docker-compose
docker-compose -version

查看docker-compose 版本
docker-compose version