Azure / Azure/azure-quickstart-templates

unable to set a dns setting to a vm through azure template

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Description

Hi
I have been struggling to configure the DNS setting of a Vnic trough the template. but it is impossible.
When i do it manually trough the portal i can verify the config via the "Automation script" button like this :
"dnsSettings": {
"dnsServers": [
"10.0.0.4"
]
},

But when done trough the template it inherite the dns from the virtual network everytime.
Please look at this write deployment log and compare the requestbody and the response body.

"operationName": {
"localizedValue": "Microsoft.Network/networkInterfaces/write",
"value": "Microsoft.Network/networkInterfaces/write"
},
"properties": {
"requestbody": "{\"location\":\"westeurope\",\"properties\":{\"ipConfigurations\":[{\"name\":\"ipconfig1\",\"properties\":{\"privateIPAllocationMethod\":\"Static\",\"privateIPAddress\":\"10.0.0.10\",\"subnet\":{\"id\":\"/subscriptions/######/resourceGroups/csalab1/providers/Microsoft.Network/virtualNetworks/Vnet1/subnets/Subnet-INT\"},\"loadBalancerBackendAddressPools\":[{\"id\":\"/subscriptions/#####/resourceGroups/csalab1/providers/Microsoft.Network/loadBalancers/LB-INT/BackendAddressPools/SFBLBBE\"}],\"loadBalancerInboundNatRules\":[{\"id\":\"/subscriptions/#####/resourceGroups/csalab1/providers/Microsoft.Network/loadBalancers/LB-INT/inboundNatRules/VM-SFB-CL1-RDP\"}],\"dnsSettings\":{\"dnsServers\":[\"10.0.0.4\"],\"appliedDnsServers\":[\"10.0.0.4\"]}}}]}}",
"statusCode": "Created",
"serviceRequestId": "#####",
"responseBody": "{\"name\":\"VM-SFB-CL1-NIC\",\"id\":\"/subscriptions/#####/resourceGroups/csalab1/providers/Microsoft.Network/networkInterfaces/VM-SFB-CL1-NIC\",\"etag\":\"W/\\\"####\\\"\",\"location\":\"westeurope\",\"properties\":{\"provisioningState\":\"Succeeded\",\"resourceGuid\":\"####\",\"ipConfigurations\":[{\"name\":\"ipconfig1\",\"id\":\"/subscriptions/fb40671f-c2d5-40a5-ae34-ae655ba58cc7/resourceGroups/csalab1/providers/Microsoft.Network/networkInterfaces/VM-SFB-CL1-NIC/ipConfigurations/ipconfig1\",\"etag\":\"W/\\\"####\\\"\",\"properties\":{\"provisioningState\":\"Succeeded\",\"privateIPAddress\":\"10.0.0.10\",\"privateIPAllocationMethod\":\"Static\",\"subnet\":{\"id\":\"/subscriptions/#####/resourceGroups/csalab1/providers/Microsoft.Network/virtualNetworks/Vnet1/subnets/Subnet-INT\"},\"primary\":true,\"loadBalancerBackendAddressPools\":[{\"id\":\"/subscriptions/#####/resourceGroups/csalab1/providers/Microsoft.Network/loadBalancers/LB-INT/backendAddressPools/SFBLBBE\"}],\"loadBalancerInboundNatRules\":[{\"id\":\"/subscriptions/####/resourceGroups/csalab1/providers/Microsoft.Network/loadBalancers/LB-INT/inboundNatRules/VM-SFB-CL1-RDP\"}]}}],\"dnsSettings\":{\"dnsServers\":[],\"appliedDnsServers\":[]},\"enableIPForwarding\":false},\"type\":\"Microsoft.Network/networkInterfaces\"}"
},

Contributor guide

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Research direction

Start with the Azure template that creates the Microsoft.Network/networkInterfaces resource and compare its request body with the deployment response body shown in the issue. Investigate why dnsSettings.dnsServers is omitted from the created network interface, then verify the behavior with a repeat deployment and the Azure portal's Automation script.

Written by the indexing model from the issue text.

Assessment

Tech stack
azure
Domain
cloud, infrastructure
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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