docker 安装

环境

centos7+
更新yum

关闭防火墙,禁止firewall开机启动

systemctl stop firewalld.service &  systemctl disable firewalld.service

yum update -y

安装时间同步软件

yum install ntp -y

ntpdate -u 0.centos.pool.ntp.org

date

修改最大打开文件数

 sudo tee -a /etc/sysctl.conf <<-'EOF'
fs.inotify.max_user_watches = 1048576
fs.inotify.max_user_instances = 1048576
kernel.pid_max = 1000000
EOF

 sudo tee -a /etc/security/limits.conf <<-'EOF'
* soft nproc 11000
* hard nproc 11000
* soft nofile 655350
* hard nofile 655350
EOF

#生效
/sbin/sysctl -p

安装相关组件

yum install -y conntrack ipvsadm ipset jq sysstat curl iptables libseccomp

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

添加

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

创建配置文件

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{  
  "registry-mirrors": ["https://5t3mqz4n.mirror.aliyuncs.com"]
}
EOF

配置生效

sudo systemctl daemon-reload

安装docker

yum install -y docker-ce-18.09.0 docker-ce-cli-18.09.0 containerd.io

启动docker 配置开机启动

sudo systemctl start docker && sudo systemctl enable docker

docker ps

如图所示：成功