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How to Diagnose and Fix DNS Resolution Failures on Linux episode artwork

EPISODE · Jun 6, 2026 · 8 MIN

How to Diagnose and Fix DNS Resolution Failures on Linux

from Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering · host Fexingo

Episode 34 of Linux Server Admin with Fexingo. Lucas and Luna walk through a real-world DNS failure that took down a staging environment for six hours. They explain how to use `dig`, `nslookup`, `systemd-resolved`, and `/etc/nsswitch.conf` to pinpoint the cause, and share a concrete fix using conditional forwarding in `systemd-resolved`. You'll also learn how to monitor DNS health with a simple custom script. Perfect for sysadmins who have ever stared at a blinking cursor wondering why `curl` hangs. Includes a quick note on how listener support keeps the show ad-free. #Linux #DNS #Sysadmin #SystemdResolved #NetworkTroubleshooting #Dig #Nslookup #NsswitchConf #ResolvConf #BashScripting #ServerEngineering #Technology #FexingoBusiness #BusinessPodcast #DevOps #Infrastructure #OpenSource #CommandLine Keep every episode free: buymeacoffee.com/fexingo

What this episode covers

Episode 34 of Linux Server Admin with Fexingo. Lucas and Luna walk through a real-world DNS failure that took down a staging environment for six hours. They explain how to use `dig`, `nslookup`, `systemd-resolved`, and `/etc/nsswitch.conf` to pinpoint the cause, and share a concrete fix using conditional forwarding in `systemd-resolved`. You'll also learn how to monitor DNS health with a simple custom script. Perfect for sysadmins who have ever stared at a blinking cursor wondering why `curl` hangs. Includes a quick note on how listener support keeps the show ad-free. #Linux #DNS #Sysadmin #SystemdResolved #NetworkTroubleshooting #Dig #Nslookup #NsswitchConf #ResolvConf #BashScripting #ServerEngineering #Technology #FexingoBusiness #BusinessPodcast #DevOps #Infrastructure #OpenSource #CommandLine Keep every episode free: buymeacoffee.com/fexingo

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How to Diagnose and Fix DNS Resolution Failures on Linux

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Frequently Asked Questions

How long is this episode of Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering?

This episode is 8 minutes long.

When was this Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering episode published?

This episode was published on June 6, 2026.

What is this episode about?

Episode 34 of Linux Server Admin with Fexingo. Lucas and Luna walk through a real-world DNS failure that took down a staging environment for six hours. They explain how to use `dig`, `nslookup`, `systemd-resolved`, and `/etc/nsswitch.conf` to...

Can I download this Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering episode?

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