Bug: Tons of DNS queries from APIC simulator

[zulfikhar_a]

We have deployed multiple APIC simulator on  to our vmware host where the APIC doing tons of DNS query. We are seeing for all the deployed Simulator.

The query is for "kafka.service.apic.local.uhc.com"

APIC version: 4.2(4i)

[Robert Burns]

Please try the following from the APIC CLI:

acidiag scheduler cleanup force
acidiag scheduler enable

Known Bug: CSCvs03090

Thanks,

Robert

[dthorson]

Same basic issue. If my DNS domain is set to "company.com" then I see the destinations/querytypes shown below. Approximately 84 queries per minute, split across these 6 types, so more than 1 query per second, 24x365. I tried the "acidiag" commands Robert provided, but these don't seem to make a difference, possibly because this is the ACI Simulator running on VMware?

Query

kafka.service.apic.local IN A + (10.1.1.1)

kafka.service.apic.local IN AAAA + (10.1.1.1)

kafka.service.apic.local.apic.local IN A + (10.1.1.1)

kafka.service.apic.local.apic.local IN AAAA + (10.1.1.1)

kafka.service.apic.local.company.com IN A + (10.1.1.1)

kafka.service.apic.local.company.com IN AAAA + (10.1.1.1)

[dthorson]

We've seen a reduction approx 5:1 after upgrading to 4.2(5k). The number of queries is still too high, but slightly more manageable. We would prefer if they stopped altogether since they are not beneficial to the operations of the ACI Simulator, and is still putting an unnecessary burden on our name servers.