1.清除内存缓存（慎用）
> sync > sync > sync > echo 1 > /proc/sys/vm/drop_caches > echo 2 > /proc/sys/vm/drop_caches > echo 3 > /proc/sys/vm/drop_caches
2.关闭系统防火墙
ubuntu
ufw disable
centos7
systemctl stop firewalld.service
systemctl disable firewalld.service
3.修改静态ip地址
ubuntu
vim /etc/network/interfaces
iface ens33 inet static address 192.168.5.101 netmask 255.255.255.0 gateway 192.168.5.1 vim /etc/resolvconf/resolv.conf.d/head nameserver 114.114.114.114
centos7
vim /etc/sysconfig/network-scripts/ifcfg-eth0 bootproto=static onboot=yes IPADDR=192.168.1.160 NETMASK=255.255.255.0 GATEWAY=192.168.1.1 DNS1=114.114.114.114 DNS2=8.8.8.8
重启网络
systemctl restart network
