Solve the problem of being unable to ping the external network after installing Centos7 in VMware

A problem occurred when configuring a cluster. Originally, all three virtual machines could ping the external network, but suddenly only one could ping the external network. The three virtual machines could ping each other. I looked at many methods and compared the relevant network configurations in /etc/sysconfig/network-scripts/ifcfg-ens33 of the three virtual machines. There was still no problem. Later, I found the answer on a foreign website.

Answer link 1: https://geekflare.com/no-internet-connection-from-vmware-with-centos-7/

Answer link 2: https://stackoverflow.com/questions/22010904/cannot-connect-centos-vm-to-internet-nat-connection

The second answer link is from stackoverflow.

Simply put, use the command dhclient -v

That is, re-obtain the IP address.

The first answer first describes the problem: the IP address cannot be obtained using the ifconfig command (I personally installed the mini version, which does not have this command installed. If you are in the same situation as me, you can install it. Of course, if you can't connect to the external network like me, then hehehe)

The author gives possible reasons for the problem: the network adapter is not enabled, or it cannot obtain a DHCP IP address.

The answer 1 also gives the method of automatic startup:

Open /etc/init.d

Create a file net-autostart (you can name it yourself)

#!/bin/bash
# Solution for "No Internet Connection from VMware"
#
### BEGIN INIT INFO
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
### END INIT INFO
dhclient -v

After saving, change the permissions

chmod 755 net-autostart

Set up auto-start

chkconfig --add net-autostart

Then reboot

Summarize

The above is what I introduced to you to solve the problem of not being able to ping the external network after installing Centos7 in VMware. I hope it will be helpful to you. If you have any questions, please leave me a message and I will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!
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