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+++ title = 'Update your DNS server on Linux' tags = ["linux", "dns", "ubuntu"] +++
There's a lot of different Linux distributions so you're solution might vary.
- Updating DNS in Ubuntu
- Updating DNS by editing "/etc/resolv.conf"
- Updating DNS by editing "/etc/systemd/resolved.conf"
Updating DNS in Ubuntu
On the top right of your desktop, open the drop down and select either Wired Settings or WiFi Settings.
![ubuntu wired settings]({{< static "post-img/ubuntu-wired-settings.png" >}})
Next press the gear icon next to the connection.
![ubuntu gear icon]({{< static "post-img/ubuntu-interface-settings.png" >}})
A window should pop up, nagivate to the IPv4 tab, disable Automatic in the DNS row and put 8.8.8.8,8.8.4.4 in the text field.
![ubuntu dns settings]({{< static "post-img/ubuntu-set-dns.png" >}})
Updating DNS by editing "/etc/resolv.conf"
Linux uses the file /etc/resolv.conf to define the DNS servers it uses. However, this file is often managed by another program on the computer.
View the contents of /etc/resolv.conf by running cat /etc/resolv.conf. If you see a warning similar to
![linux resolv conf warning]({{< static "post-img/linux-etc-resolv-conf.png" >}})
do not edit the file. Instead follow Updating DNS by editing "/etc/systemd/resolved.conf"
If you do not see this warning, change the file contents to
nameserver 8.8.8.8
nameserver 8.8.4.4
Updating DNS by editing "/etc/systemd/resolved.conf"
Systemd is a program on many linux distributions that help manage the operating system. To update the DNS we'll edit /etc/systemd/resolved.conf. Find A part in the file that looks like
[Resolve]
DNS=192.168.1.1
FallbackDNS=8.8.8.8
or
[Resolve]
#DNS=
#FallbackDNS=
Change lines DNS=... and FallbackDNS=... to be
[Resolve]
DNS=8.8.8.8
FallbackDNS=8.8.4.4
Save the file and run service systemd-resolved restart.