初始化docker安装环境

1.安装NTP服务，保证服务器时间的正确性

1	yum -y install ntp && systemctl start ntpd && systemctl enable ntpd

2.直接关闭防火墙服务：

1	systemctl stop firewalld && systemctl disable firewalld

3.关闭SELINUX

1	vim /etc/selinux/config

1
2
3

#注释以下配置  
#SELINUX=enforcing
#SELINUXTYPE=targeted

增加以下配置

1	SELINUX=disabled

4.开启转发

1	echo 'net.ipv4.ip_forward=1'> /usr/lib/sysctl.d/00-system.conf systemctl restart network

5.安装docker

sudo yum update -y  

sudo yum install -y wget  

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

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

sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo 

sudo mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup  

sudo wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo 

sudo yum makecache 

sudo yum install -y docker-ce 

sudo systemctl start docker 

sudo systemctl enable docker

6.阿里云镜像加速器

针对Docker客户端版本大于 1.10.0 的用户您可以通过修改daemon配置文件/etc/docker/daemon.json来使用加速器

sudo mkdir -p /etc/docker 

sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://uywr58b5.mirror.aliyuncs.com"]
}
EOF

sudo systemctl daemon-reload sudo 

systemctl restart docker