1、route -n查看是设置了网关 # ping 8.8.8.8PING 8.8.8.8 (8.8.8.8): 56 data bytesping: sendto: Network is unreachable 2、设置dns 文件 cat /etc/resolv.confnameserver 8.8.8.8nameserver 8.8.4.4nameserver 114.114.114.114