Deployment Azure CD问题：无法获取应用程序服务'；myAppServiceName'；发布凭据

我正在尝试在azure web应用程序上部署我的版本。它不起作用了，我不知道该怎么办。也许我在我的应用程序服务或发布管道的配置中遗漏了一些东西。我有以下错误

Failed to fetch App Service 'myAppServiceName' publishing credentials. Error: Could not fetch access token for Managed Service Principal.

下面是我调试的一个模块：

2019-04-11T08:25:35.4761242Z ##[debug]Predeployment Step Started
2019-04-11T08:25:35.4776374Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e data subscriptionid = xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
2019-04-11T08:25:35.4776793Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e data subscriptionname = Paiement à l’utilisation
2019-04-11T08:25:35.4777798Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e auth param serviceprincipalid = null
2019-04-11T08:25:35.4778094Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e data environmentAuthorityUrl = https://login.windows.net/
2019-04-11T08:25:35.4781237Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e auth param tenantid = ***
2019-04-11T08:25:35.4782509Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e=https://management.azure.com/
2019-04-11T08:25:35.4782769Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e data environment = AzureCloud
2019-04-11T08:25:35.4785012Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e auth scheme = ManagedServiceIdentity
2019-04-11T08:25:35.4785626Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e data msiclientId = undefined
2019-04-11T08:25:35.4785882Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e data activeDirectoryServiceEndpointResourceId = https://management.core.windows.net/
2019-04-11T08:25:35.4786107Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e data AzureKeyVaultServiceEndpointResourceId = https://vault.azure.net
2019-04-11T08:25:35.4786348Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e data AzureKeyVaultDnsSuffix = vault.azure.net
2019-04-11T08:25:35.4786525Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e auth param authenticationType = null
2019-04-11T08:25:35.4786735Z ##[debug]33ddf4aa-03c4-4031-95fa-e2083d49cc9e data EnableAdfsAuthentication = false
2019-04-11T08:25:35.4792324Z ##[debug]{"subscriptionID":"mysubscriptionID","subscriptionName":"Paiement à l’utilisation","servicePrincipalClientID":null,"environmentAuthorityUrl":"https://login.windows.net/","tenantID":"***","url":"https://management.azure.com/","environment":"AzureCloud","scheme":"ManagedServiceIdentity","activeDirectoryResourceID":"https://management.azure.com/","azureKeyVaultServiceEndpointResourceId":"https://vault.azure.net","azureKeyVaultDnsSuffix":"vault.azure.net","authenticationType":null,"isADFSEnabled":false,"applicationTokenCredentials":{"clientId":null,"domain":"***","baseUrl":"https://management.azure.com/","authorityUrl":"https://login.windows.net/","activeDirectoryResourceId":"https://management.azure.com/","isAzureStackEnvironment":false,"scheme":0,"isADFSEnabled":false}}
2019-04-11T08:25:35.4809400Z Got service connection details for Azure App Service:'myAppServiceName'
2019-04-11T08:25:35.4846967Z ##[debug][GET]http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=https://management.azure.com/
2019-04-11T08:25:35.5443632Z ##[debug]Deployment Failed with Error: Error: Failed to fetch App Service 'myAppServiceName' publishing credentials. Error: Could not fetch access token for Managed Service Principal. Please configure Managed Service Identity (MSI) for virtual machine 'https://aka.ms/azure-msi-docs'. Status code: 400, status message: Bad Request
2019-04-11T08:25:35.5444488Z ##[debug]task result: Failed
2019-04-11T08:25:35.5501745Z ##[error]Error: Failed to fetch App Service 'myAppServiceName' publishing credentials. Error: Could not fetch access token for Managed Service Principal. Please configure Managed Service Identity (MSI) for virtual machine 'https://aka.ms/azure-msi-docs'. Status code: 400, status message: Bad Request
2019-04-11T08:25:35.5511780Z ##[debug]Processed: ##vso[task.issue type=error;]Error: Failed to fetch App Service 'myAppServiceName' publishing credentials. Error: Could not fetch access token for Managed Service Principal. Please configure Managed Service Identity (MSI) for virtual machine 'https://aka.ms/azure-msi-docs'. Status code: 400, status message: Bad Request
2019-04-11T08:25:35.5512729Z ##[debug]Processed: ##vso[task.complete result=Failed;]Error: Failed to fetch App Service 'myAppServiceName' publishing credentials. Error: Could not fetch access token for Managed Service Principal. Please configure Managed Service Identity (MSI) for virtual machine 'https://aka.ms/azure-msi-docs'. Status code: 400, status message: Bad Request
2019-04-11T08:25:35.5512828Z Failed to add release annotation. Error: Failed to get App service 'myAppServiceName' application settings. Error: Could not fetch access token for Managed Service Principal. Please configure Managed Service Identity (MSI) for virtual machine 'https://aka.ms/azure-msi-docs'. Status code: 400, status message: Bad Request
2019-04-11T08:25:35.5645194Z (node:5004) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Error: Failed to fetch App Service 'myAppServiceName' publishing profile. Error: Could not fetch access token for Managed Service Principal. Please configure Managed Service Identity (MSI) for virtual machine 'https://aka.ms/azure-msi-docs'. Status code: 400, status message: Bad Request
2019-04-11T08:25:35.5759915Z ##[section]Finishing: Deploy Azure App Service

还有一些截图

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如果你需要更多信息，请告诉我。。我是新手，所以可能会错过一些简单的事情。。。致以最诚挚的问候

您是否已设置身份状态？ 如下

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我的研究表明这是一个间歇性问题。 我重新部署了两次，效果很好。

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第一次重新部署-似乎要等很长时间才能连接到可用的代理，所以我也取消了，并重新部署了-这项工作没有任何问题。

如果这仍然是一个问题，或者有人有这个问题，我所做的只是重新运行该版本，并且进展顺利。希望有人通过重新发布来节省时间，如果这不起作用，那么可能尝试其他方法