Azure App Service Deploy overwrites content of wwwroot with old version of application

Question, Bug, or Feature?
Type: Bug

Enter Task Name: Azure App Service deploy (v4.*)

Environment

Azure DevOps (hosted agent) Agent - Private Windows NT 2.170.1

Issue Description

Issue is very similar and started as this one https://github.com/microsoft/azure-pipelines-tasks/issues/11661

When I started developing pipeline for our project I needed to deploy 2 web apps on 1 app service in Azure. My starting options for 2 deployments were as follows:

- task: AzureRmWebAppDeployment@4
  displayName: 'Deploy ${{ parameters.projectName}} '
  inputs:
    azureSubscription: ${{ parameters.azureSubscription }}
    WebAppName: $(Deploy.App1.WebAppName)
    packageForLinux: '$(Pipeline.Workspace)/backend/${{ parameters.projectName }}'
    VirtualApplication: '/' # /app1 for app1
    AppSettings: >-
      -- redacted --

First i was deploying app to wwwroot and then I was publishing second app to different dir. I had noticed that my first app is being wiped out from the earth after second publish so I changed order of publishing and everything seemed ok up to Friday this week - so it was publishing in this order:

app1 - \app1
app2 - \

I had this super weird issue where my code was acting like code from few weeks ago. i had some initialization logic that I changed recently and the change were not visible on remote. It turned out that during deployment of app1 it was somehow deploying old content of my code to \ and it was long enough so all initialization logic for this app was running and it was giving me wrong results.

Chronology of events:

• app1 starts deployment
• during deployment of app1 I see that dll of app2 is being changed to one from 6th november
• app2 old dll is doing unwanted changes to db.
• app1 completes deployment
• app1 is being deployed with newest version
• app1 crashes due to changes made by old dlls of app1 that app2 created.

Task logs

I would rather not disclose logs atm.

Fix attemps

• I added UseWebDeploy: true to deploy files per this comment
  • Nothing changed. I still got old app that is doing old stuff.
• I did simple recurse search on D:/home
  • I did not find old version of my app. Searching on D:/ resulted on error.
  • I found only new dll that is correct.
• I decompiled compiled code
  • it was new code - that’s correct behaviour.
• I checked if app1 published directory contains app2
  • there was no sight of app2 files in app1.
• I checked if I have any old files in checked source code
  • 1:1 match with kdiff3
• I will list all files in publish directory for my job
  • Everything looks normal. That dll is only in 1 place and it’s new one and it is in app2 directory.
• I tried to use RemoveAdditionalFilesFlag
  • Problem was not resolved.
• I changed task version to 3
  • This resolved the problem. Old version of app2 is no longer running during deploy of app1.
  • This is only workaround for me. It is not real solution.

Workaround

Change task version to 3. (There is 1 important change between 3<->4 - packageForLinux for version 3 is not alias for Package as it is in v4)

input json (it is not clear from readme what are inputs names): https://github.com/microsoft/azure-pipelines-tasks/blob/master/Tasks/AzureRmWebAppDeploymentV3/task.json readme: https://github.com/microsoft/azure-pipelines-tasks/blob/master/Tasks/AzureRmWebAppDeploymentV3/README.md

[czerwinskilukasz1]

Hello @chshrikh and @arjgupta , it’s been a while since we submitted this issue. Are there any updates?

I wish you Happy Holidays soon. Best, Łukasz

[sunkarakamal]

y alias is tijohnso.

Hi I also have same issue. Did you get any solution for the same