docker安装

1)配置docker源

# 更换阿里源 加载docker源 替换docker源里的阿里源为清华源  列出docker 可以安装的列表
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/docker-ce.repo https://download.docker.com/linux/centos/docker-ce.repo
sed -i 's+download.docker.com+mirrors.tuna.tsinghua.edu.cn/docker-ce+' /etc/yum.repos.d/docker-ce.repo
yum list docker-ce --showduplicates

2)安装指定的docker版本

yum -y install docker-ce-18.09.9 docker-ce-cli-18.09.9
yum -y install bash-completion
source /usr/share/bash-completion/bash_completion

4)配置docker优化

mkdir -pv /etc/docker && cat <<EOF | sudo tee /etc/docker/daemon.json
{
  "registry-mirrors": ["https://tuv7rqqq.mirror.aliyuncs.com","https://reg-mirror.qiniu.com","https://docker.mirrors.ustc.edu.cn/","https://hub-mirror.c.163.com/"],
  "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF	

5)配置docker开机自启动

systemctl enable --now docker
systemctl status docker

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