DNS troubles

[gcraenen]

After bringing the cluster up with these scripts and deploying some apps and pods in it, I am having problems with DNS in the cluster. I cannot reach pods, etc. in the cluster itself (same namespace) by dns name, but can reach them by ip address. Same goes for destinations outside of the cluster.

I tries and tested the steps from kubernete.io with the dnsutils pod and in those test I only find a lot of error messages like:

[WARNING] No files matching import glob pattern: custom/*.override

It seems to be a coredns problem, already described in this blogpost: https://blog.differentpla.net/blog/2022/02/25/pod-dns-problems/

[timothystewart6]

Hey, this could be related to your DNS suffix in DHCP. I would disabled it if you have it enabled for that VLAN and then test it again

[gcraenen]

Ok, I'm going to find out if I have that enabled in my local DNS server.

[gcraenen]

That was it!