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Windows 2016 cluster nodes , unable to reach internet after creating cluster with Azure Vms.

I have 3 VMS in Azure. 3 vms in same Vnet and subnet.

1 DC with domain foo.bar.local 10.83.48.4
VM1 2016 with SQL joined to that domain with name: VM1. foo.bar.local 10.83.48.5
VM2 2016 with SQL joined to that domain with name: VM1. foo.bar.local 10.83.48.6

I created a failovercluster with those 2 nodes. This will later will be configured for SQL always on.
Service cluster SQL1.foo.bar.local with ip 10.83.48.9 was created successfully and 2 nodes are up and running.
If I go to DC I can see that both nodes and cluster service are registered ok.

But then I started to see in event logsof both vms:

 Cluster network name resource failed registration of one or more associated DNS name(s) because the a DNS server could not be reached. 
        
  Cluster Network name: 'Cluster Name'
  DNS Zone: 'reddog.microsoft.com'
  DNS Server: '10.83.48.4'

. I already posted this here: https://docs.microsoft.com/en-us/answers/questions/387422/windows-service-cluster-2016-in-azure-getting-clus.html

And @jiayaozhu-MSFT said It could be related to specifying the correct DNS suffix in the configuration of both nics in the Azure Vms. So I added the DC prefix in the DSN configuration as showed in this pic. (DC has internet access)

95250-dns-sufix.png


I don´t see event´s now related to cluster error trying to reach reddog.microsoft.com , but vms are still unable to access internet, even though I can see the little computer below saying internet access is available


95238-iaccess.png




Both nodes before cluster creation had internet access. Issue started to happen after cluster creation . No new NSG rules were added at the subnet of vms so outgoing traffic should be able to reach internet.

What can this be related to?. I´m posting here now according to @jiayaozhu-MSFT



if you need more professional explaination, you may need to post your issue on our Azure Q&A forum without windows-server or windows-server-clustering tags and new technical supporter responsible for Azure will come to help you as soon as possible



Thank you!



azure-sql-virtual-machines
dns-sufix.png (17.8 KiB)
iaccess.png (2.8 KiB)
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According to your description, seems you would like to get Azure supporter's help. In this way, I will remove the windows-server-2016 tag for you. If there are any concerns, please feel free to let me know.

Best Regards,
Anne

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@Yiyo33-7398 Just following up to check if you got a chance to go through my previous comment.

Do let me know if we can be of any further helps!!!

Thanks

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Hey @prmanhas-MSFT yes I have already opened a casa With Azure. Tks.-

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@Yiyo33-7398 Thank you for confirming on same!!!

Will request you to share solution on thread as well once you have it so community can benefit from that too :)

Thanks

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Yiyo33-7398 answered

Hello @XiaoweiHe-MSFT what do you mean with Azure support? isn´t it this the link for this question?:

https://docs.microsoft.com/en-us/answers/questions/389264/windows-2016-cluster-nodes-unable-to-reach-interne.html

Did you meana case with Azure in Azure portal? not sure if they provide support for windows cluster

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