基于输入参数的Azure ARM模板参数

Question

Given a template.json with:

"parameters": {

    "virtualMachineName": {
        "type": "string"
    },
      "networkInterfaceName": {
        "type": "string"
    }
}

How can I set the networkInterfaceName based upon the input of virtualMachineName?

For example:

New-AzureRmResourceGroupDeployment -Name MyDeployment -TemplateFile .\template.json -TemplateParameterFile .\parameters.json

will prompt for VirtualMachineName and if 'test-vm' is entered, we would like the networkInterfaceName to default to 'test-vm-nic'.

We have tried adding this parameters.json:

"networkInterfaceName": {
        "value": "[concat(parameters('virtualMachineName'),'_nic')]"
},

but receive the error:

Error: Code=InvalidResourceName; Message=Resource name 
[concat(parameters('virtualMachineName'),'_nic')] is invalid. The 
name can be up to 80 characters long. It must begin with a word character,  
and it must end with a word character or with '_'. The name may contain word 
characters or '.', '-', '_'.

Answer 1

You could add the NIC name under variables in the main template, instead of under parameters. Your parameters section would then only hold the 'virtualMachineName' parameter:

"parameters": {
      "virtualMachineName": {
        "type": "string"
      }
    },
"variables": {
      "networkInterfaceName": "[concat(parameters('virtualMachineName'),'_nic')]"
    },
"resources":{
...
}

In the resource definition, you would define the nic name as

variables('networkInterfaceName')