As mentioned in the above pages, we are able to create new secrets in
Key Vault. But, we do not see the imported certificate in the list of
Certificates (when checked in the Azure Portal UI)
This is because ARM Template doesn't have a property to upload a certificate so instead it stores a base64 encoded value of the PFX certificate in the Secret in a application/x-pkcs12
like below :
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"keyVault": {
"type": "string",
"defaultValue" :"funccertimporttestkv"
},
"TestCedential_1": {
"type": "secureString",
"defaultValue":"MIIKYAIBAzCCChwXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXhp4XPejOrOIgc9/6dkfBBSgxY73wtbf+G3N7KTYP1LKKHS0YwICB9A="
},
"TestCedentialName_1": {
"type": "string",
"defaultValue": "funcAppValidationCert"
}
},
"variables": {
},
"resources": [
{
"type": "Microsoft.KeyVault/vaults/secrets",
"name": "[concat(parameters('keyVault'), '/', parameters('TestCedentialName_1'))]",
"apiVersion": "2015-06-01",
"properties": {
"contentType": "application/x-pkcs12",
"value": "[parameters('TestCedential_1')]"
}
}
],
"outputs": {}
}

we are not able to Import the Certificates in the Function App. Is
this not supported in the current ARM Template Key Vault commandlet?
How can this be fixed?
If you are using a template like below :
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"envName": {
"defaultValue": "qa",
"type": "String"
},
"certificateName": {
"type": "string",
"defaultValue": "funcAppValidationCert"
},
"domainName": {
"type": "string",
"defaultValue": "localhost"
},
"keyvaultName": {
"type": "string",
"defaultValue": "funccertimporttestkv"
},
"password": {
"type": "string",
"defaultValue": "Password@1234"
}
},
"variables":{
"functionStorageAccountName" :"[concat('storaccfn',parameters('envName'),resourceGroup().location)]",
"appServicePlanName" :"[concat('plan-myapp-',parameters('envName'),resourceGroup().location)]",
"sitesFunctionAppName" :"[concat('func-ans-',parameters('envName'),resourceGroup().location)]"
},
"resources": [
{
"type": "Microsoft.Storage/storageAccounts",
"apiVersion": "2021-04-01",
"name": "[variables('functionStorageAccountName')]",
"location": "[resourceGroup().location]",
"sku": {
"name": "Standard_LRS",
"tier": "Standard"
},
"kind": "Storage",
"properties": {
"supportsHttpsTrafficOnly": true
}
},
{
"type": "Microsoft.Web/serverfarms",
"apiVersion": "2018-02-01",
"name": "[variables('appServicePlanName')]",
"location": "[resourceGroup().location]",
"sku": {
"name": "S1",
"tier": "Standard",
"size": "S1",
"family": "S",
"capacity": 1
},
"kind": "app",
"properties": {
"perSiteScaling": false,
"maximumElasticWorkerCount": 1,
"isSpot": false,
"reserved": false,
"isXenon": false,
"hyperV": false,
"targetWorkerCount": 0,
"targetWorkerSizeId": 0
}
},
{
"type": "Microsoft.Web/sites",
"apiVersion": "2018-11-01",
"name": "[variables('sitesFunctionAppName')]",
"location": "[resourceGroup().location]",
"dependsOn": [
"[resourceId('Microsoft.Web/serverfarms', variables('appServicePlanName'))]",
"[resourceId('Microsoft.Storage/storageAccounts', variables('functionStorageAccountName'))]"
],
"kind": "functionapp",
"identity": {
"type": "SystemAssigned"
},
"properties": {
"enabled": true,
"serverFarmId": "[resourceId('Microsoft.Web/serverfarms', variables('appServicePlanName'))]",
"httpsOnly": true,
"siteConfig": {
"appSettings":[
{
"name": "AzureWebJobsStorage",
"value": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('functionStorageAccountName'), ';AccountKey=', listKeys(resourceId('Microsoft.Storage/storageAccounts', variables('functionStorageAccountName')),'2017-06-01').keys[0].value)]"
},
{
"name": "WEBSITE_CONTENTAZUREFILECONNECTIONSTRING",
"value": "[concat('DefaultEndpointsProtocol=https;AccountName=', variables('functionStorageAccountName'), ';AccountKey=', listKeys(resourceId('Microsoft.Storage/storageAccounts', variables('functionStorageAccountName')),'2017-06-01').keys[0].value)]"
},
{
"name": "WEBSITE_CONTENTSHARE",
"value": "[toLower(variables('sitesFunctionAppName'))]"
},
{
"name": "FUNCTIONS_EXTENSION_VERSION",
"value": "~3"
},
{
"name": "FUNCTIONS_WORKER_RUNTIME",
"value": "dotnet"
},
{
"name": "WEBSITE_RUN_FROM_PACKAGE",
"value": "1"
},
{
"name": "WEBSITE_TIME_ZONE",
"value": "UTC"
}
]
}
}
},
{
"type": "Microsoft.Web/sites/hostNameBindings",
"apiVersion": "2016-08-01",
"name": "[concat(variables('sitesFunctionAppName'), '/', parameters('domainName'))]",
"location": "[resourceGroup().location]",
"dependsOn": [
"[resourceId('Microsoft.Web/certificates', parameters('certificateName'))]",
"[resourceId('Microsoft.Web/sites', variables('sitesFunctionAppName'))]"
],
"properties": {
"siteName": "[variables('sitesFunctionAppName')]",
"hostNameType": "Verified",
"sslState": "SniEnabled",
"thumbprint": "[reference(resourceId('Microsoft.Web/certificates', parameters('certificateName'))).Thumbprint]"
}
},
{
"type": "Microsoft.Web/certificates",
"name": "[parameters('certificateName')]",
"apiVersion": "2016-03-01",
"location": "[resourceGroup().location]",
"properties": {
"keyVaultId": "[resourceId('Microsoft.KeyVault/vaults', parameters('keyvaultName'))]",
"keyVaultSecretName": "[parameters('certificateName')]",
"password": "[parameters('password')]",
"serverFarmId": "[resourceId('Microsoft.Web/serverfarms', variables('appServicePlanName'))]"
},
"dependsOn":[
"[resourceId('Microsoft.Web/sites', variables('sitesFunctionAppName'))]"
]
}
]
}
And facing a Problem of Bad Request which says not able to access the keyvault like below:

Then Add Microsoft.Azure.CertificateRegistration
(i.e. ObjectId : ed47c2a1-bd23-4341-b39c-f4fd69138dd3) , Microsoft Azure App Service (Internal)
(i.e. ObjectId : 505e3754-d8a9-4f8b-97b6-c3e48ac7a543) & Microsoft Azure App Service
(i.e. ObjectId : f8daea97-62e7-4026-becf-13c2ea98e8b4) in access policy for keyvault.

And If you get the below after solving the above then please check if you have converted the certificate value to a proper base64 encoded value.

Then you can refer this SO thread
to properly provide a base64 value of the certificate.
Output:
After successful deployment you can see this TLS/SSL settings :
