ProxMox VE Frequent DNS Queries for ProxMox Backup Server

Jul 8, 2021
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Indiana, USA
Not really a major issue, but I have noticed that my ProxMox VE server makes frequent DNS queries pertaining to my ProxMox Backup Server (8 queries every 10 seconds). This actually makes up ~50% of the DNS traffic reported by my PiHole server on my network which is surprising considering all the smart devices I own and I only trigger backups every 6 hours.

Is this expected behavior or do I potentially have something misconfigured? PiHole is configured out of the box with a low TTL, but I am surprised ProxMox wants to ping the backup server so often when not in use.
 

aaron

Proxmox Staff Member
Staff member
Jun 3, 2019
2,941
465
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every 10 seconds
This sounds a lot like the pvestatd service checking on the configured storage.

I assume you configured the PBS via its name and not directly via its IP? Why there are 8 queries all the time, I cannot say for sure right now.
 
Jul 8, 2021
9
0
1
25
Indiana, USA
Yep, that's how I set it up. I guess to be fair I also have two separate pools managed by that server, so might just be 4 per pool. Also checks for ipv6 too despite not being assigned an address (other than link local), so may could be thought of as 2 per.Screenshot_20211104_220753.png

P.S. I am loving PBS so far as the file restore function came in handy recently.
 

pixitha

Member
Dec 24, 2019
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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.
 

pixitha

Member
Dec 24, 2019
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6
39
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.
 

DrGeek

New Member
May 4, 2022
6
0
1
I had the sameproblem. I used the host.conf to specify order hosts bind and put the ip resolution addresses in /etc/hosts file.
 

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