resolv.conf

Redhat 8 Network Manager

March 10, 2022 by Ulysses

In Redhat 8, every time you the Network Manager get’s restarted it overwrites /etc/resolv.conf. To prevent that from hapenning, create a new file called /etc/NetworkManager/conf.d/90-dns-none.conf and add the following lines. Restart Network Manager. Your /etc/resolv.conf should be unchanged.

[main]
dns=none

Restart Network Manager

$ systemctl reload NetworkManager

Generated by NetworkManager

May 27, 2021 by Ulysses

If your /etc/resolv.conf keeps getting overwritten, take a look at /etc/NetworkManager/NetworkManager.conf. Set DNS to none.

[main]
dns=none

Resolv.conf

January 7, 2019 by Ulysses

Resolv.conf is a computer file used by various operating systems as a DNS resolver. The file is in plain text. It’s usually generated by the system administrator or a network program. The file is located in the /etc/ directory and contains the search domain as well a list of nameservers.

Here’s an example of the /etc/resolv.conf file.

search domain.com local.lan
nameserver 1.1.1.1
nameserver 8.8.8.8
nameserver 9.9.9.9

If you have problems resolving domain names, check this file first.