How can we add new host key in Function App using ARM-template - arm-template

Question

what app setting property needs to be added so that new host key will be generated using ARM Template
"appSettings": [
{
"name": "AzureWebJobsDashboard",
"value": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('storageAccountName'), ';AccountKey=', listKeys(variables('storageAccountid'),'2015-05-01-preview').key1)]"
},
{
"name": "AzureWebJobsStorage",
"value": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('storageAccountName'), ';AccountKey=', listKeys(variables('storageAccountid'),'2015-05-01-preview').key1)]"
},
{
"name": "WEBSITE_CONTENTAZUREFILECONNECTIONSTRING",
"value": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('storageAccountName'), ';AccountKey=', listKeys(variables('storageAccountid'),'2015-05-01-preview').key1)]"
},
{
"name": "WEBSITE_CONTENTSHARE",
"value": "[toLower(variables('functionAppName'))]"
},
{
"name": "FUNCTIONS_EXTENSION_VERSION",
"value": "~1"
},
{
"name": "WEBSITE_NODE_DEFAULT_VERSION",
"value": "6.5.0"
},
{
"name": "ConfigurationStorageAccount",
"value": "[variables('storageAccountName')]"
},
{
"name": "ConfigurationStorageAccountKey",
"value": "[listKeys(variables('storageAccountid'),'2015-05-01-preview').key2]"
}
]

Answer 1

Currently it's not possible to create keys directly from the template. But you can create keys using Powershell / .NET whatever way you are using to deploy the template. Since the KEY MANAGEMENT API is just REST.
you can call the below API in your Powershell script to add a new key:
PUT api/sites/{name}[/slots/{slot}]/host/default/{functionkeys|systemkeys}/{keyName}
{
"properties": {
"name":"<keyName>",
"value":<keyValue>"
}
}
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