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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