this post was submitted on 18 Nov 2024
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16
Local domains constantly time out according to Uptime-Kuma (lemmy.dbzer0.com)
submitted 1 week ago* (last edited 6 days ago) by [email protected] to c/[email protected]
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I followed this tutorial to set up local domain names with SSL-certificates using DuckDNS: https://notthebe.ee/blog/easy-ssl-in-homelab-dns01/

I have three local domains for my Nginx Proxy Manager running on a VPS, for my self-hosted Nextcloud and my Proxmox-WebGUI both running on my local Homeserver. They follow the scheme service.dataprolet.duckdns.org.

Now I use Uptime-Kuma to monitor my services including the three domains and for some reason those three domains constantly time out after 48 seconds. I already set up the retries to 3, but to no avail.

I also use Pi-hole and Unbound and thought, that might be an issue, but testing my DNS using dig, mtr, traceroute, nslookup and host all returned normal values and no errors.

Does anybody have any idea what could cause this? I'm kind of clueless at this point. Thanks in advance!

EDIT: I don't get it.

  1. I can't ping duckdns.org on my home server. I only get 100 % packet loss. I can open the website in my browser though. I also can't ping www.duckdns.org, which redirects to appservers-duckdns-prod-1630339571.ca-central-1.elb.amazonaws.com. Also gets 100 % packet loss.
  2. I've added duckdns.org to my Uptime-Kuma and it got flagged as down because timeout of 48000ms exceeded but my other domains using DuckDNS were unaffected.
  3. I added another local domain to Uptime-Kuma to see the differences of having ignoring SSL errors tuned on or off and the number of retries:
  • Nextcloud
    • Ignore SSL error = false
    • Retries = 2
  • Proxmox
    • Ignore SSL error = true
    • Retries = 1
  • VPS
    • Ignore SSL error = false
    • Retries = 1
  • Homepage
    • Ignore SSL error = true
    • Retries = 2

Throughout the day only the newly added Homepage got flagged as down for 5 times. The 3 others were up the whole time.

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[–] [email protected] 4 points 6 days ago (1 children)

I've heard DuckDNS has become more unreliable. You could try another service like afraid.org and see if it makes a difference.

[–] [email protected] 1 points 6 days ago

Yeah, I suspect it's simply an issue on the side of DuckDNS. :/