Creating SAS token with ARM template: error InvalidValuesForRequestParameters

Question

I am trying to generate a SAS token from an ARM template, to allow my template to subsequently access resources in a blob storage (including linked templates)

However, I get the following error:

{
      "code": "InvalidValuesForRequestParameters",
      "message": "Values for request parameters are invalid: signedPermission,signedExpiry,signedResourceTypes,signedServices."
 }

My template had this variable and line to generate the SAS token:

    "variables": {
        "vaultName": "[concat('hpc',uniqueString(resourceGroup().id, parameters('keyVaultName')))]",
        "accountSasProperties": {
            "type": "object",
            "defaultValue": {
                "signedServices": "fb",
                "signedPermission": "rwdlacup",
                "signedExpiry": "2021-11-30T00:00:00Z",
                "signedResourceTypes": "co"
            }
        }
    },
(...)
      {
            "apiVersion": "2018-02-14",
            "type": "Microsoft.KeyVault/vaults/secrets",
            "dependsOn": [
                "[concat('Microsoft.KeyVault/vaults/', variables('vaultName'))]"
            ],
            "name": "[concat(variables('vaultName'), '/', 'StorageSaSToken')]",
            "properties": {
                "value": "[listAccountSas(resourceId(parameters('StorageAccountRg'),'Microsoft.Storage/storageAccounts', parameters('storageAccountName')), '2018-07-01', variables('accountSasProperties')).accountSasToken]"
            }
        }

the idea is to generate a SAS token and put it in a vault (I create it in the same template).
As a side note, the storage account for which I generate a SAS token is in another resource group

I tried several variation of the parameters, but could not find what's wrong, and the error is not really helping

Answer 1

Found the issue myself, and it's the worst kind of solution: the stupid mistake

I switched "accountSasProperties" from parameters to variables, and in the process, I forgot to remove the "defaultValue", and put the value directly under "accountSasProperties"
the correct syntax for a variable in my case:

   "accountSasProperties": {  
         "signedServices": "fb",  
         "signedPermission": "rwdlacup",  
         "signedExpiry": "2021-11-30T00:00:00Z",  
         "signedResourceTypes": "co"  
    }  

thanks @shiva patpi for your example, it somehow helped me to discover my issue

Answer 2

Hello @Jean Pascal JOURNET ,
Thanks for your query !
I just followed the sample template mentioned here and able to create the Keyvault , generate the SASToken and stored as a secret in KeyVault.
https://github.com/sam-cogan/Demos/blob/master/SaSToken/SaSToken.json

FYI - Here is the complete JSON file:
(for the KeyVaultAccessObjectID - it will be a unique Identifier)
(Edited couple of values to reflect closer to your template)

{
"$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"keyVaultName": {
"type": "string",
"metadata": {
"description": "Name of KeyVault to Store SaS Token"
}
},
"tenantID": {
"type": "string",
"metadata": {
"description": "Azure AD Tenant ID"
}
},
"keyVaultAccessObjectID": {
"type": "string",
"metadata": {
"description": "ID of user or App to grant access to KV"
}
},
"StorageAccountName": {
"type": "string",
"metadata": {
"description": "Name of Storage Account to Create"
}
},
"accountSasProperties": {
"type": "object",
"defaultValue": {
"signedServices": "fb",
"signedPermission": "rwlacup",
"signedExpiry": "2022-03-01T00:00:01Z",
"signedResourceTypes": "co"
}
}
},
"variables": {},
"resources": [
{
"type": "Microsoft.Storage/storageAccounts",
"apiVersion": "2018-07-01",
"name": "[parameters('StorageAccountName')]",
"location": "[resourceGroup().location]",
"tags": {
"displayName": "[parameters('StorageAccountName')]"
},
"sku": {
"name": "Standard_LRS"
},
"kind": "StorageV2"
},
{
"type": "Microsoft.KeyVault/vaults",
"apiVersion": "2018-02-14",
"name": "[parameters('keyVaultName')]",
"location": "[resourceGroup().location]",
"tags": {
"displayName": "[parameters('keyVaultName')]"
},
"properties": {
"enabledForDeployment": true,
"enabledForTemplateDeployment": true,
"enabledForDiskEncryption": true,
"tenantId": "[parameters('tenantID')]",
"accessPolicies": [
{
"tenantId": "[parameters('tenantID')]",
"objectId": "[parameters('keyVaultAccessObjectID')]",
"permissions": {
"keys": [
"get"
],
"secrets": [
"list",
"get",
"set"
]
}
}
],
"sku": {
"name": "standard",
"family": "A"
}
}
},
{
"apiVersion": "2018-02-14",
"type": "Microsoft.KeyVault/vaults/secrets",
"dependsOn": [
"[concat('Microsoft.KeyVault/vaults/', parameters('keyVaultName'))]"
],
"name": "[concat(parameters('keyVaultName'), '/', 'StorageSaSToken')]",
"properties": {
"value": "[listAccountSas(parameters('StorageAccountName'), '2018-07-01', parameters('accountSasProperties')).accountSasToken]"
}
}
],
"outputs": {}
}

Kindly let us know if that helps !