What should I do if centos7 cannot ping the gateway under the virtual machine?

1. Change the network connection mode to NAT mode

2. Check the centos server related information

3. Use the vim /etc/sysconfig/network-scripts/ifcfg-ens33 command to modify the relevant configuration, as shown in the figure below:

Press the a key to start modifying the file. After the modification is completed, first press the Esc key, then press the English: key, and finally press the wq key to save!

wq: save; q!: do not save

The relevant configuration is:

TYPE=Ethernet BOOTPROTO=static #配置静态IP，网关，子网掩码 IPADDR=192.168.204.100 NETMASK=255.255.255.0 GATEWAY=192.168.204.2 取消networkmanager 管理 NM_CONTROLLED=no DEFROUTE=yes PEERDNS=yes PEERROUTES=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_PEERDNS=yes IPV6_PEERROUTES=yes IPV6_FAILURE_FATAL=no NAME=ens33 UUID=d8b51bef-1883-419d-a7b2-3ddf580af668 DEVICE=ens33 ONBOOT=yes

Then restart the network card:

systemctl restart network

or

service network restart

4. Configure DNS

Switch to the networkmanager directory c

d /etc/NetworkManager

Modify the NetworkManager.conf configuration file and add dns=none at the end

Modify resolv.conf and add a new dns configuration vi /etc/resolv.conf, as shown below:

#主DNS nameserver 8.8.8.8 #备DNS nameserver 114.114.114.114 search localdomain

5. Restart the network card

systemctl restart network

or

service network restart

. Just complete the above steps.

Recommended tutorial:centos tutorial

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