Why can't I move any of my app services to a new app service plan I created?

Question

Why can't I move any of my app services to a new app service plan I created?

David Thielen 691

I created a new app service plan, identical to an existing one (the only way to rename a plan). But it won't let me assign app services to it. Why?

Same region & plan.

thanks - dave

BhargaviAnnadevara-MSFT 5,341 Reputation points

2021-07-15T06:06:49.107+00:00

@David Thielen Thanks for reaching out. In addition to being in the same region, the source and target plans should be in the same resource group as well. Is that true in your case?

BhargaviAnnadevara-MSFT 5,341 Reputation points

2021-07-15T06:06:49.107+00:00

@David Thielen Thanks for reaching out. In addition to being in the same region, the source and target plans should be in the same resource group as well. Is that true in your case?

Answer 1

BhargaviAnnadevara-MSFT 5,341

@David Thielen You can move an app to another App Service plan, as long as the source plan and the target plan are in the same resource group and geographical region.

To elaborate, Azure deploys each new App Service plan into a deployment unit, internally called a webspace. Each region can have many webspaces, but your app can only move between plans that are created in the same webspace. All plans created with the same resource group and region combination are deployed into the same webspace.

For example, if you created a plan in resource group A and region B, then any plan you subsequently create in resource group A and region B is deployed into the same webspace. (Note that plans can’t move webspaces after they’re created, so you can’t move a plan into “the same webspace” as another plan by moving it to another resource group.)

Please refer to this article to know more: Move an app to another App Service plan

Hope this helps. Do let us know if you have further questions.

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David Thielen 691 Reputation points

2021-07-21T20:09:19.373+00:00

Hi;

First off, sorry for the delay answering. I was on vacation.

All of this is in subscription ID ********-****-****-****-***********

It is in the same resource group. I am trying to move the 12SimpleSecrets app service to the App Service Plan SmallWebsites

Both are in the resource group Thielen_Websites and Location West US.

??? - thanks - dave
BhargaviAnnadevara-MSFT 5,341 Reputation points

2021-07-28T15:23:42.43+00:00
@David Thielen Apologies for not getting back sooner here. Just to clarify, are you not able to find the expected ASP when trying to initiate the move from the Change App Service plan blade? Or is the operation resulting in an error when attempted?

Since it appears like you're not able to move your app to an existing App Service plan, I'd request you to please try the following:

Navigate to the app that you want to move on the Azure Portal

From the left menu, select Change App Service plan

Create a new plan manually by selecting Create new

Select the pricing tier of the new plan, or proceed with the default

When done, click OK

Please check if that helps. Do let me know what you see.
David Thielen 691 Reputation points

2021-07-28T18:29:00.403+00:00

Hi bhargaviannadevara-msft;

First off, no reason to apologize for the delay. I was slow to get back to you (I was on vacation).

Second, I want to figure this out rather than create a new App Service Plan. Here is my app service plan:

Resource group: Thielen_Websites
Location: West US
Pricing tier: D1:shared

Here is the App Service:

Resource group: Thielen_Websites
Location: West US
App Service Plan: Default 1 (D1: Shared)

When I go to change the App Service Plan - it does not show the App Service plan SmallWebsites as an option:

Any idea why not?

thanks - dave
BhargaviAnnadevara-MSFT 5,341 Reputation points

2021-07-29T06:46:32.057+00:00
@David Thielen Thanks a lot for providing the screenshots and additional details. So I understand that the App Service 12SimpleSecrets and (target) App Service Plan SmallWebsites are in the same resource group Thielen_Websites. Could you confirm if the (source) App Service Plan Default1 is also in the Thielen_Websites RG? As it wouldn't be possible if that's not the case.

If it indeed is, could you please try changing it via the command line and see what happens? You can do so with either of the following options on your local machine or Azure Cloud Shell:

Azure PowerShell:
Set-AzWebApp -ResourceGroupName Thielen_Websites -Name 12SimpleSecrets -AppServicePlan SmallWebsites

Azure CLI:
az webapp create --name 12SimpleSecrets --resource-group Thielen_Websites --plan SmallWebsites

Please check and let me know if you still see issues.
David Thielen 691 Reputation points

2021-07-29T18:49:18.307+00:00
Hi;

I created a new AppServicePlan as you suggested above for one of the sites. And then I tried to set another using PS as you suggested (new service plan name is Thielen-ASP).

Got an error:

PS /home/david> Set-AzWebApp -ResourceGroupName Thielen_Websites -Name 12SimpleSecrets -AppServicePlan Thielen-ASP Set-AzWebApp: Operation returned an invalid status code 'Conflict' PS /home/david>

Any idea what the conflict could be?

thanks - dave
BhargaviAnnadevara-MSFT 5,341 Reputation points

2021-07-30T03:35:13.843+00:00

@David Thielen Regardless of a newly created ASP or an existing one, the resource group of the App Service Plan is one of the deciding factors for whether the move would be possible or not. The source plan and the target plan must be in the same resource group and geographical region.

As requested in the earlier comment, could you please confirm the following?

So I understand that the App Service 12SimpleSecrets and (target) App Service Plan SmallWebsites are in the resource group Thielen_Websites. Could you confirm if the (source) App Service Plan Default1 is also in the Thielen_Websites RG?

For the move to work, plans SmallWebsites or Thielen-ASP have to reside in the same resource group as the source plan Default1.
David Thielen 691 Reputation points

2021-07-30T13:17:33.8+00:00

Yes, everything is in the same resource group

thanks - dave

Answer 2

@David Thielen Thanks for taking the time to report this issue. Summarizing the outcome of the offline investigation here so it helps others in the community as well.

To work around the issue, you can clone your existing App Service app to a newly created app in the same region selecting the desired App Service Plan.

Steps to clone your App Service app:

Navigate to your app on the Azure Portal and look for the Clone App option under the Development Tools section
When cloning the app, make sure you select the desired values for the app name (cannot be the same as the previous app), resource group and App Service plan (choose the desired ASP)
Click on Create

The above can also be performed with some Azure PowerShell cmdlets. Check this article for more details: Azure App Service App Cloning Using PowerShell

Hope this helped you get around the issue. Do let us know if you have further questions.

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Donatas 1 Reputation point

2022-08-11T09:12:29.74+00:00

Hello.
We are facing the same issue with some migrations.
@BhargaviAnnadevara-MSFT thanks a lot for a workaround. Is there any chance Azure will fix this bug or an official solution is to use workarounds?

Thanks a lot for your answers in advance

Answer 3

Looks like we've found a solution.
It appears ability to move resources between service plans depends on something called "webspace" which you can not define by yourself but it is possible to ensure you deploy service plan to the same webspace.
ToDo:

check json of service plan you want to move and check for the resource group defined in a webspace ( it might be different than an actual resource group plan is currently in if plan was previously moved )
create new service plan in the same group that is defined in a webspace attribute ( region must be the same )
move service plan to the group you want it to be in

Once you create plan under "correct" webspace you can move it whenever you want as webspace parameter won't change anymore.
The app should see the new plan listed after that's done

Answer 4

I have an App Service Plan and a Web App that are in the same Resource Group and also the same Region, which according to the above comments and the referenced documentation make them part of the same webspace, but I still cannot move the Web App, and in fact the "Change app service plan" link in the Azure Portal is disabled.

After reading the section at https://learn.microsoft.com/en-us/azure/app-service/app-service-plan-manage#move-an-app-to-another-app-service-plan I see the statement "Note that plans can’t move webspaces after they’re created, so you can’t move a plan into “the same webspace” as another plan by moving it to another resource group." This applies to me, as I first created the Web Apps in one Resource Group and then moved them to the Resource Group of the target App Service Plan, to no avail :-(

I thin it would be very helpful for the Azure Portal to display the name of the webspace in the Overview section of the Web App and App Service Plan, to explicitly call out this "hidden" but important attribute and avoid confusion, thanks.

Why can't I move any of my app services to a new app service plan I created?

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