CODEWITHSUNDEEP
c#azurevisual-studio-2012web-deploymentazure-web-app-service
Manu Mohan
Manu Mohan

Reputation: 1824

Getting site under construction message after azure webapp deployment

I had a network failure while publishing (using visual studio webdeploy ) my webapp to azure. Later i tried again, Then i got the below error message.

Error 5 Web deployment task failed. (Web Deploy cannot modify the file 'NewRelic.Agent.Core.dll' on the destination because it is locked by an external process. In order to allow the publish operation to succeed, you may need to either restart your application to release the lock, or use the AppOffline rule handler for .Net applications on your next publish attempt. Learn more at: http://go.microsoft.com/fwlink/?LinkId=221672#ERROR_FILE_IN_USE.) 0 0 ABCD.ABCD.ABCD.ABCD

So i restarted my webapp several times, but same exception. then i tried with FTP. That was also a failure. After few minutes i tried again with visual studio web deploy, then publishing succeeded. But now i am getting a 503 error- site under construction. Any idea?

Note: I tried app offline also. No hope

Upvotes: 35

Views: 16979

Answers (5)

Manu Mohan
Manu Mohan

Reputation: 1824

I resolved my issue. Solution was to remove offline html (APP_OFFLINE.html) from root directory(on server) that is created because of the app offline rule i added to publish profile.

actual problem : <EnableMSDeployAppOffline>true</EnableMSDeployAppOffline> in your publish profile that is actually used to take your app offline while deploying. After finishing deployment, MSDeploy tool should delete APP_OFFLINE.html automatically. But, it did not happened in above case. And that is because my first deployment failed because of a DLL being used and locked by some process.

So what I suggest is, take a look at the root directory of your website and if there's a file called APP_OFFLINE.html, just remove that.

In future, when doing deployment just stop the app service before publishing and make sure your deployment is not failing because of any locked files

Upvotes: 74

Shahid Malik
Shahid Malik

Reputation: 171

I figured out that, As I received Build Succeeded Email, and I go to browser and open the site. It showing "Site Under Construction". I wait 5 minutes, And than refresh. It loaded correctly. It looks like some time startup need more time as usual.

Upvotes: 0

Joe
Joe

Reputation: 1305

FYI, this happened for me today, deployment automated through ADO CI/CD. It looks like the last deployment failed for ERR_FILE_IN_USE on the .exe for the web app itself, so it appears the rollback wasn't successful.

Upvotes: 1

Martin Staufcik
Martin Staufcik

Reputation: 9502

This error can happen when publishing from Visual Studio using a publish profile and the publishing fails with an error.

The solution is to solve the publishing error.

In my case the error was connected with a locked file. Stopping the app service before publishing solved the issue.

Upvotes: 0

Ajay B L
Ajay B L

Reputation: 1106

Culprit for this outage : app_offline.htm

This is a known bug with Azure Kudu service where it fails intermittently to delete app_offline.htm file from the server - https://github.com/projectkudu/kudu/issues/2949.

This file gets added to bring the site down temporarily and should be removed once the site is upgraded. But this is not happening consistently. As of Nov 2019, the bug is still open.

There is a simple work around for this :

  • Open your app service in Azure. On left hand panel, scroll and find Advanced Tools. Click Go. This will take you to Kudu service for your app service.
  • On the nav bar, click Tools > Zip push deploy.
  • There will be a file app_offline.htm in the list.
  • Click on delete button left to it and delete it. That's it! Your app should be up now.

Permanent Solution would be :

Tell Kudu not to create this file at all by adding key SCM_CREATE_APP_OFFLINE with value 0 in your appsettings.

Upvotes: 15

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