#!/bin/bash  
  
  
# CentOS-Base.repo，docker-ce.repo
rm -rf /etc/yum.repos.d/*
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# 关闭防火墙和selinux
systemctl stop firewalld && systemctl disable firewalld
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
setenforce 0

# 设置时间同步
yum install -y ntp ntpdate
ntpdate cn.pool.ntp.org 


  
# 将文本添加到Crontab文件  
echo "* */1 * * * /usr/sbin/ntpdate   cn.pool.ntp.org" >> "crontab -e"  
  

#yum
yum install -y wget net-tools nfs-utils lrzsz gcc gcc-c++ make cmake libxml2-devel openssl-devel curl curl-devel unzip sudo ntp libaio-devel wget vim ncurses-devel autoconf automake zlib-devel python-devel epel-release openssh-server socat ipvsadm conntrack
yum install docker-ce-20.10.17 -y
systemctl start docker && systemctl enable docker

# 开启包转发功能和修改内核参数
cat > /etc/sysctl.d/docker.conf <<EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF

#使参数生效
sysctl -p /etc/sysctl.d/docker.conf

echo "modprobe br_netfilter" > /etc/sysconfig/modules/br_netfilter.modules
chmod 755 /etc/sysconfig/modules/br_netfilter.modules

lsmod |grep br_netfilter

systemctl restart docker  

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://3vta0yzw.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker


# 输出安装完成消息  
echo "Docker安装完成！"