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.
appservers-duckdns-prod-1630339571.ca-central-1.elb.amazonaws.com
. Also gets 100 % packet loss.timeout of 48000ms exceeded
but my other domains using DuckDNS were unaffected.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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It shouldn’t go through the VPN although idk how to verify that. Do you still have the timeout errors in your monitors? What do those errors say?
After changing the MTU to 1200 I have no timeouts anymore, but a lot of
read ECONNRESET
errors. -.-I just changed the Docker’s MTU to 1200 and will observe the change.