希望有人也看到了。我们最后一次成功建造是在2019年12月6日。新的部署尝试在部署步骤失败（与生成和发布管道中的问题相同）。
错误报告如下：

Got service connection details for Azure App Service:'OUR SITE'
Package deployment using ZIP Deploy initiated.

## [error]Failed to deploy web package to App Service.

## [error]Error: Error: Failed to deploy web package to App Service. Conflict (CODE: 409)

## [warning]Error: Failed to update deployment history. Error: Bad Request (CODE: 400)

App Service Application URL: OUR SITE

这是我们的部署 YAML ，抱歉，我已经做了好几天了：(

# Node.js Express Web App to Linux on Azure

# Build a Node.js Express app and deploy it to Azure as a Linux web app.

# Add steps that analyze code, save build artifacts, deploy, and more:

# https://docs.microsoft.com/azure/devops/pipelines/languages/javascript

trigger:
- master

variables:

  # Azure Resource Manager connection created during pipeline creation
  azureSubscription: '[OUR SUB ID]'

  # Web app name
  webAppName: 'website-to-deploy'

  # Environment name
  environmentName: 'web-to-deploy'

  # Agent VM image name
  vmImageName: 'ubuntu-latest'

stages:
- stage: Build
  displayName: Build stage
  jobs:  
  - job: Build
    displayName: Build
    pool:
      vmImage: $(vmImageName)

    steps:
    - task: NodeTool@0
      inputs:
        versionSpec: '10.x'
      displayName: 'Install Node.js'

    - script: |
        npm install
        npm run build --if-present
        npm run test --if-present
      displayName: 'npm install, build and test'

    - task: ArchiveFiles@2
      displayName: 'Archive files'
      inputs:
        rootFolderOrFile: '$(System.DefaultWorkingDirectory)'
        includeRootFolder: false
        archiveType: zip
        archiveFile: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
        replaceExistingArchive: true

    - upload: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
      artifact: drop
    - task: AzureRmWebAppDeployment@4
      inputs:
        ConnectionType: 'AzureRM'
        azureSubscription: 'OUR SUBSCRIPTION'
        appType: 'webAppLinux'
        WebAppName: 'site-to-deploy'
        packageForLinux: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
        RuntimeStack: 'NODE|12-lts'
        StartupCommand: 'npm start'
        AppSettings: 'WE DO HAVE SOME SETTINGS'

请注意：我已尝试添加 WEBSITE_WEBDEPLOY_USE_SCM = true 对于配置来说，这没有帮助。
以上版本没有任何更改 YAML 这是成功的工作和饲料到释放管道
谢谢你的帮助。
更新：您可以添加ms dev ops引发的问题 system.debug: true 在变量部分中，可以获得更详细的日志记录。
这让我看到 AppService 返回 409 代码，因为它认为部署已经在进行中。如果我得到一个决议，我会编辑这篇文章。
以下是调试信息：

## [debug]Encountered a retriable status code: 409. Message: 'Conflict'.

## [debug][POST]https://$web040-glndev-com:***@web040-glndev-com.scm.azurewebsites.net/api/zipdeploy?isAsync=true&deployer=VSTS_ZIP_DEPLOY

## [debug]Could not parse response: {}

## [debug]Response: undefined

## [debug]Encountered a retriable status code: 409. Message: 'Conflict'.

## [debug][POST]https://$web040-glndev-com:***@web040-glndev-com.scm.azurewebsites.net/api/zipdeploy?isAsync=true&deployer=VSTS_ZIP_DEPLOY

## [debug]Could not parse response: {}

## [debug]Response: undefined

## [debug]ZIP Deploy response: {"statusCode":409,"statusMessage":"Conflict","headers":{"transfer-encoding":"chunked","content-type":"text/plain; charset=utf-8","server":"Kestrel","date":"Wed, 15 Jan 2020 17:40:47 GMT","connection":"close"},"body":"There is a deployment currently in progress. Please try again when it completes."}

## [error]Failed to deploy web package to App Service.

## [debug]Processed: ##vso[task.issue type=error;]Failed to deploy web package to App Service.

## [debug]task result: Failed

## [error]Error: Error: Failed to deploy web package to App Service. Conflict (CODE: 409)

## [debug]Processed: ##vso[task.issue type=error;]Error: Error: Failed to deploy web package to App Service. Conflict (CODE: 409)

## [debug]Processed: ##vso[task.complete result=Failed;]Error: Error: Failed to deploy web package to App Service. Conflict (CODE: 409)

## [debug][POST]https://management.azure.com/subscriptions/7a7aad03-79b0-4118-8dd1-8ebd63716c6a/resourceGroups/appsvc_linux_centralus/providers/Microsoft.Web/sites/web040-glndev-com/config/appsettings/list?api-version=2016-08-01

## [debug]Correlation ID from ARM api call response : e4ebaf0f-7ccf-4b7b-ba4d-b70b8fd13bea

## [debug]Application Insights is not configured for the App Service. Skipping adding release annotation.

票证在这里：409无法部署web包