Automatic overwrite of the resolv. conf file in Ubuntu

If multiple NICs exist and one of the lan nics is set to DHCP, if the multi-event resolvconf is installed, it clears the resolv. conf file for configuring nameserver.

The simplest way is

/Etc/resolvconf/resolv. conf. d/head (either base or tail)

Add the required Domain Name Server: nameserver XXX. XXX

Then use the command to update: resolvconf-u

If the network adapter has a static IP address, you can modify the/etc/Network/interfaces file,

Append information such as DNS-nameservers XXX. XXX

I 've been tossing this problem many times until I knocked on man resolvconf.