使用ARM模板到Azure函数的WebDeploy失败，并出现ERROR_INSUFFICIENT_ACCESS_TO_SITE_FOLDER

问题描述

我正在尝试使用ARM模板通过MSDeploy部署Azure Function应用（.NET Core，函数v3），并且几乎每次都会出现此错误。这只是偶尔成功。我的函数应用程序具有5个基于计时器的函数，它们每秒运行一次。我目前正在使用部署插槽，并且当它们位于暂存插槽中时（通过disabledAttribute和特定于插槽的设置），我的功能已设置为禁用。

我用来部署的ARM模板：

{
            "apiVersion": "2018-02-01","name": "[concat(variables('webAppName'),'/staging')]","type": "Microsoft.Web/sites/slots","kind": "app","location": "[resourceGroup().location]","resources": [
                {
                    "apiVersion": "2015-02-01","type": "Extensions","name": "MSDeploy","dependsOn": [
                        "[concat(resourceId('Microsoft.Web/Sites/',variables('webAppName')),'/slots/staging')]"
                    ],"properties": {
                        "packageUri": "[parameters('packageUrl')]"
                    }
                }
            ]
        }

ARM-MSDeploy Deploy Failed: 'Microsoft.Web.Deployment.DeploymentDetailedUnauthorizedAccessException: Unable to perform the operation ("Delete File") for the specified directory ("D:\home\site\wwwroot\bin\MyAssembly.dll"). This can occur if the server administrator has not authorized this operation for the user credentials you are using. Learn more at: http://go.microsoft.com/fwlink/?LinkId=221672#ERROR_INSUFFICIENT_ACCESS_TO_SITE_FOLDER. ---> Microsoft.Web.Deployment.DeploymentException: The error code was 0x80070005. ---> System.UnauthorizedAccessException: Access to the path 'D:\home\site\wwwroot\bin\MyAssembly.dll' is denied.

如何阻止此错误的发生？

解决方法

有关类似问题，请参考this主题。

您需要添加appOfline参数并将其设置为true，如this文章中所述

    {
  "apiVersion": "2016-08-01","name": "MSDeploy","type": "Extensions","properties": {
    "packageUri": "https://storage.blob.core.windows.net/artifacts/package.zip","appOffline": true
  }

希望以上内容有助于解决您的问题。