#工具
yum install -y net-tools vim bash-completion wget telnet 
 
#关闭防火墙 
 sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config  && setenforce 0  &&  systemctl stop firewalld && systemctl disable firewalld   

#iptables
iptables -F && service iptables status  &&  service iptables stop
 
#查看cpu 
cat /proc/cpuinfo| grep "processor"| wc -l  
或者
lscpu


#内存
free -m  
 
#磁盘
lsblk

#查看主机版本
cat /etc/redhat-release 

#gpu
nvidia-smi

关闭dnsmasq (否则可能导致docker 容器无法解析域名)
service dnsmasq stop  && systemctl  disable dnsmasq