centos 7、8 安装 docker

我这里环境是centos 7、8 mini版本

一、卸载原来的docker

sudo yum remove docker \
yum remove docker docker-common docker-selinux docker-engine

二、安装docker

1、更新yum

yum -y update

2、安装需要的软件包和设置yum源

yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager  --add-repo  https://download.docker.com/linux/centos/docker-ce.repo

 centos8 可能会出现：Error: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

sudo sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
sudo sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*

3、安装docker

查看当前所有仓库中所有 docker 版本

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

 

 选择一个版本进行安装，默认安装最新版本

yum -y install docker-ce-18.06.3.ce
//查看docker版本
docker version

 

 4、设置开机启动并启动docker

systemctl enable docker && systemctl start docker

三、安装docker-compose

这里有所有平台版本 https://github.com/docker/compose/releases

sudo curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

docker-compose --version

四、其它操作

1、限制日志大小

vi /etc/docker/daemon.json
{
  "log-driver":"json-file",
  "log-opts": {"max-size":"300m", "max-file":"3"}
}
systemctl daemon-reload && systemctl restart docker