How to get Application Gateway Backend Health Status with healthprobelog through Powershell

Question

How to get Application Gateway Backend Health Status with healthprobelog through Powershell

Murali R 245

Hi Team,

My request is for the status of Application Gateway Backend Health with the healthprobelog and create a Automation Runbook with the same.

Firstly, i have used Azure CLI with the following command and i get the result of the server address, Health Status and HealthProbeLog

az network application-gateway show-backend-health --resource-group "your resource group name" --name "your app gw name"

Result:

User's image

Secondly, i have used Windows Powershell with the following command and i can receive healthprobelog status

Get-AzApplicationGatewayBackendHealth -Name "your app gw name" -ResourceGroupName "your resource group name" | Select -ExpandProperty BackendAddressPoolsText

Result:

User's image

I would be requiring the help on Powershell script to get the result of healthprobelog in Application Gateway Backend

With regards,

Murali

ChaitanyaNaykodi-MSFT 27,366 Reputation points Microsoft Employee

2023-10-04T17:12:33.23+00:00

@Murali R

Just checking in to see if the below answer helped. If this answers your query, please don’t forget to click "Accept the answer" which might be beneficial to other community members reading this thread. And, if you have any further query do let us know.
ChaitanyaNaykodi-MSFT 27,366 Reputation points Microsoft Employee

2023-10-05T15:17:57.12+00:00

@Murali R

Just checking in to see if the below answer helped. If this answers your query, please don’t forget to click "Accept the answer" which might be beneficial to other community members reading this thread. And, if you have any further query do let us know.
ChaitanyaNaykodi-MSFT 27,366 Reputation points Microsoft Employee

2023-10-06T18:59:24.56+00:00

@Murali R

Just checking in to see if the below answer helped. If this answers your query, please don’t forget to click "Accept the answer" which might be beneficial to other community members reading this thread. And, if you have any further query do let us know.

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ChaitanyaNaykodi-MSFT 27,366 Reputation points Microsoft Employee

2023-10-04T17:12:33.23+00:00

@Murali R

Just checking in to see if the below answer helped. If this answers your query, please don’t forget to click "Accept the answer" which might be beneficial to other community members reading this thread. And, if you have any further query do let us know.
ChaitanyaNaykodi-MSFT 27,366 Reputation points Microsoft Employee

2023-10-05T15:17:57.12+00:00

@Murali R

Just checking in to see if the below answer helped. If this answers your query, please don’t forget to click "Accept the answer" which might be beneficial to other community members reading this thread. And, if you have any further query do let us know.
ChaitanyaNaykodi-MSFT 27,366 Reputation points Microsoft Employee

2023-10-06T18:59:24.56+00:00

@Murali R

Just checking in to see if the below answer helped. If this answers your query, please don’t forget to click "Accept the answer" which might be beneficial to other community members reading this thread. And, if you have any further query do let us know.

Answer 1

ChaitanyaNaykodi-MSFT 27,366 Microsoft Employee

@Murali R

Thank you for reaching out.

Based on my understanding of your question above. I understand that in Get-AzApplicationGatewayBackendHealth command healthProbeLog property is missing.

I was able to reproduce the issue on my end and I have logged it as bug under Azure PowerShell repo here.

https://github.com/Azure/azure-powershell/issues/22883

Please let me know if you have any additional requirements here. Thank you!

Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

Murali R 245 Reputation points

2023-10-02T14:03:48.7033333+00:00

Hi @ChaitanyaNaykodi-MSFT , Any updates on the above. Also if there is any other powershell script which provide with healthprobelog details. Could you please help me with that.
ChaitanyaNaykodi-MSFT 27,366 Reputation points Microsoft Employee

2023-10-04T05:40:56.37+00:00
@Murali R

Thank you for getting back.

You can use the following script to get the healthprobelog details.

I have used the Application Gateways - Backend Health API Call to fetch the details in a PowerShell script.

Please include your values in <> in the script below.

Connect-AzAccount Set-AzContext -Subscription "<SubID>" $url = "https://management.azure.com/subscriptions/<SubID>/resourceGroups/<RG>n/providers/Microsoft.Network/applicationGateways/<APPGateway>/backendhealth?api-version=2023-05-01" $token = (Get-AzAccessToken).token $headers = @{'Authorization' = "Bearer $token"} $result = Invoke-WebRequest -Method POST -Uri $url -Headers $headers -UseBasicParsing $Backendhealth= $result.Headers.Location Start-Sleep -Seconds 5 $L= (Invoke-WebRequest -Uri $Backendhealth -Headers $headers -UseBasicParsing).Content $L

The script will fetch the details in the following format, and it will include the healthprobelog details.

Hope this helps! Please let me know if you have any additional questions. Thank you!

Please "Accept the answer" if the information helped you. This will help us and others in the community as well.
Murali R 245 Reputation points

2023-10-09T05:11:19.2+00:00

Hi @ChaitanyaNaykodi-MSFT Thank u for the reply, let me check and get back to you on this
Murali R 245 Reputation points

2023-10-10T16:30:37.78+00:00

Hi @ChaitanyaNaykodi-MSFT Thank you very much. I have tried your suggestion and it gives the result which includes healthprobelog.

Currently, Iam trying to extract specific values such as Backendpoolname, Unhealthy servers, server address, health and healthProbeLog. Is it possible to extract that information from the above script.

Because when i used powershell script as below i was able to get the list, of unhealthy servers but only thing i was missing out is healthprobelog

Get-AzApplicationGatewayBackendHealth -Name "xxxxxxxx" -ResourceGroupName "xxxxxxx" | Select -ExpandProperty BackendAddressPools | Select -ExpandProperty BackendHttpSettingsCollection | Select -ExpandProperty servers | Select-Object -Property "Address", "Health" | Where-Object -Property Health -eq "Unhealthy"

ChaitanyaNaykodi-MSFT 27,366 Microsoft Employee

@Murali R

Thank you for getting back. In this case you can try running the following script.

Connect-AzAccount
Set-AzContext -Subscription "<SubID>" 
$url = "https://management.azure.com/subscriptions/<SubID>/resourceGroups/<RG>n/providers/Microsoft.Network/applicationGateways/<APPGateway>/backendhealth?api-version=2023-05-01" 

$token = (Get-AzAccessToken).token

$headers = @{'Authorization' = "Bearer $token"}

$result = Invoke-WebRequest -Method POST -Uri $url -Headers $headers -UseBasicParsing

$Backendhealth= $result.Headers.Location

Start-Sleep -Seconds 5

$L= Invoke-WebRequest -Uri $Backendhealth -Headers $headers
$body = $L.Content | ConvertFrom-Json
$serverlist = $body.backendAddressPools.backendHttpSettingsCollection.servers
Foreach ($server in $serverlist)
{
$healthStaus = $server.health
if ("Unhealthy" -eq $healthStaus)
{
$server
}
}

This script will list down the health, address and healthProbeLog for unhealthy servers as shown below.

User's image

Hope this helps! Please let me know if you have any additional questions. Thank you!

Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

Murali R 245 Reputation points

2023-10-11T08:58:36.4766667+00:00

Hi @ChaitanyaNaykodi-MSFT Thank you very much for all your help.
Murali R 245 Reputation points

2023-10-17T10:01:42.0933333+00:00

Hi @ChaitanyaNaykodi-MSFT I have a doubt. Is it possible to send an email trigger to the concerned application team saying that their Backend is Unhealthy. For example if we have 50+ applications in one application gateway, that means i need to send the alert to the 50+ application team email whenever their backend is Unhealthy.
ChaitanyaNaykodi-MSFT 27,366 Reputation points Microsoft Employee

2023-10-19T18:51:21.4+00:00

@Murali R

I understand you already know about the in-built alerts for Application Gateway based on your previous thread here.

If you wish to have more granular control over how the alerts should be sent and where those should be sent to. You can try setting up your own automation here using Azure Function Apps and Logic apps, where you do data operations using Azure Function and use Azure Logic App to send out notifications. Currently we do not have a specific example for your case but you can refer to this tutorial.

Hope this helps!

As your original query was resolved, it will help if you could create a new thread if you have any additional questions. Thank you!
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How to get Application Gateway Backend Health Status with healthprobelog through Powershell

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