Monitoring Instance count for App Services

Question

Monitoring Instance count for App Services

Piyush Bhatt AIS 6

Following question was asked and archived. But this answer is obsolete now as the UI has changed.

https://social.msdn.microsoft.com/Forums/azure/en-US/9c1c0633-ceff-493f-be9b-f62f8cb279e2/how-can-i-monitore-the-instance-count-of-an-app-service-plan-on-a-dashboard?forum=windowsazurewebsitespreview

So if you have new steps for how to see [Instance Count] for an app service under [Metrics] or some other way would be helpful to put here.

4 answers

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Answer 1

Neutrino Sunset 21

Jesus Christ what decade is this editor from? After spending 20 minutes trying to upload some images I gave up.

Anyway, this is possible.

First realize that instance scaling is a function of the App Service Plan that the App Service runs in.

Then on either the App Service or the App Service Plan that it is hosted in select 'Settings -> Scale Out (App Service Plan)' in the left navigation bar.
From the 'Scale Out' view select 'Run History' from the tab at the top.
Then at the end of the time range selector labelled 'Show data for last' click the ellipsis (three dots ...), then select 'Pin to dashboard'.

In this manner you can pin the instance count metric to either your default dashboard or any custom dashboard.

Matthew McKenzie 5 Reputation points

2025-04-03T22:32:07.8966667+00:00

Frankly, this is crap. There is no way to see why instances are kicked. It is always going to be be a health check, but the history is where? What about them not being replaced? I imagine that this would expose hardware failures. How can I tell if it is an agent failure?

Answer 2

Fabio Peruzzo Barbosa 10

Any update on this? With the new (in preview) automatic scaling rules there is no way see the instance count?

Answer 3

Grmacjon-MSFT 19,301 Moderator

Hi @Piyush Bhatt AIS ,

You can find the number of instances in an app service plan shows in the upper right-hand corner of the Overview UX for an app service plan:

Beyond that, there isn't a specific metric that shows app service plan instance count. To get an actual instance count metric you have to have an auto-scale rule created for the app service plan. Auto scale rules do have metrics that enable you to track the instance count of the auto-scaled resource (which in this case would be the app service plan).

Hope that helps. Please let us know if you have further questions.

Thanks,
Grace

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Piyush Bhatt 6 Reputation points

2021-11-10T22:08:49.273+00:00

Thanks- but we do have Autoscale Rules to increase/decrease count automatically. That works fine.

Point was to be able to see how many counts were there during 24 hours or over last week and see some trends. Looks like that is not available.
Grmacjon-MSFT 19,301 Reputation points Moderator

2021-11-11T17:10:46.297+00:00

@Piyush Bhatt AIS , you're correct that option is currently not available. If you would like to suggest this as a feature please leave your feedback on our Azure feedback site.

Thanks,
Grace
Neutrino Sunset 21 Reputation points

2022-07-12T20:11:10.08+00:00

The ability to monitor the instance count of a resource has previously existed in multiple forms in Azure and each of those features has been removed.

Therefore it would seem to be pointless to ask for this monitoring feature to be added again until Microsoft decides to stop flipping removing it!

Answer 4

EricaLopez-7502 31

Hello ,

Is there any solution to this:

How to monitor Instance count for App Services?

Thank you.

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Monitoring Instance count for App Services

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