Follow up, after editing my dnsmasq server to increase the TTLs on the internal domains, proxmox is not honoring them. I still see a huge number of queries, so for now I'm going to set the metrics server to an IP address as a break fix.
Ahh doh. Good catch. Just looked around for that fix and found it:
https://discourse.pi-hole.net/t/change-the-ttl/6903
I actually had to fix this on my OpenWRT dnsmaq config, by default it uses ttl=0 for local, just like Pihole does.
Did you make any progress on this? I noticed this behavior as well with sending stats to influxdb, all of the proxmox nodes are super chatty doing dns lookups for the influx server.
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