vDiscovery on Azure in error state with overlapping VNETs error

[#1]

Hi,

I have a question regarding a recent problem we found on our infoblox grid manager. We usually use a vDiscovery Job on our Azure Subscription to discover the network information and DNS.

Since we updated in a recent version of infoblox (v. 8.5.4-419474), the Azure vDiscovery job is in error state, with the following messages in the "show log debug" command:

[2021/09/29 15:45:57.262] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2013 add_message(): Overlapped VNETs encountered with direct network view mapping option, entire discovered dataset discarded. (Overlapping with existing NIOS objects)
[2021/09/29 15:45:57.263] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2575 _on_message(): Error during message callback : Overlapping with existing NIOS objects
[2021/09/29 15:45:57.263] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message(): CDiscoveryVpcOverlappedDataError: Overlapping with existing NIOS objects
[2021/09/29 15:45:57.264] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message(): File "cdiscovery_data_aggregation.py", line 2526, in _on_message
[2021/09/29 15:45:57.264] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message():
[2021/09/29 15:45:57.264] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message(): File "cdiscovery_data_aggregation.py", line 2000, in add_message
[2021/09/29 15:45:57.264] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message():
[2021/09/29 15:45:57.264] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message(): File "cdiscovery_data_aggregation.py", line 732, in _retrieve_missing_ipam_nviews
[2021/09/29 15:45:57.264] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message():
[2021/09/29 15:45:57.264] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message(): File "cdiscovery_data_aggregation.py", line 557, in _ensure_network_view
[2021/09/29 15:45:57.264] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message():
[2021/09/29 15:45:57.264] (21605 <py>/infoblox/dns/bin/cdiscovery_aggregator) cdiscovery_data_aggregation.py:2576 _on_message(): File "cdiscovery_data_aggregation.py", line 517, in _validate_direct_network_view_vpc_overlapped

It seems that we have some overlapping vnets but we cannot find which ones in the logs.

Could you please help us with this problem?

Thank you! =)

[#2]

Moreoever, we don't want to create a new network view.

[#3]

We just came across the same error today and was hoping there was an answer out there somewhere. However, we're still on 8.4.7...

[#4]

I ran into this error today.  I imported our azure subscription into a new view and found that there were 2 subnets that existed in different azure regions in the same subscription.  My Azure guys tell me that to add a subnet to a route table, they have to add it to the vnet.  So, overlapping subnets in 3 different azure regions.  They were all subnets we had put in for Prisma when we were testing last year.  I have put in a request to have our Azure team remove the subnets from all 3 regions' vnets and I will try the discovery again tomorrow trying to pull it into our default view.  

Also, the logs wouldn't tell me which subnets were overlapping which is why I pulled it into a new view to find them manually.