PowerShell script to execute DOS commands using KUDU APIs

First published on MSDN on Jul 13, 2018

Lets say you would like to get the machine name from all VM instances that are running your Azure AppService website or you would like to create a folder under the wwwroot, this below sample PowerShell scripts can execute any DOS command

[code language="powershell"]
#Login-AzureRmAccount

$resoureGroupName = "wabac"
$websiteName = "wabacblue"

$env = @{
command= 'Set COMPUTERNAME'
dir= 'site'
}
$json = $env | ConvertTo-Json

$env2 = @{
command= 'mkdir vdir'
dir= 'site\wwwroot'
}
$json2 = $env2 | ConvertTo-Json

$website = Get-AzureWebsite -Name $websiteName
$username = $website.PublishingUsername
$password = $website.PublishingPassword
$base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $username,$password)))
$apiBaseUrl = "https://$($website.Name).scm.azurewebsites.net/api"

[System.Uri]$Uri = $apiBaseUrl

$instances = Get-AzureRmResource -ResourceGroupName $resoureGroupName `
-ResourceType Microsoft.Web/sites/instances `
-ResourceName $websiteName `
-ApiVersion 2018-02-01


foreach($instance in $instances)
{
$instanceName = $instance.Name
Write-Host "`tVM Instance ID `t`t: " $instanceName

#Now execute 'SET COMPUTER' cmd
$cookie= New-Object System.Net.Cookie
$cookie.Name = "ARRAffinity"
$cookie.Value = $instanceName
$Cookie.Domain = $uri.DnsSafeHost
$session=New-Object Microsoft.Powershell.Commands.WebRequestSession
$session.Cookies.add($cookie)

$response = Invoke-RestMethod -Uri "$apiBaseUrl/command" `
-Headers @{Authorization=("Basic {0}" `
-f $base64AuthInfo)} `
-Method Post -Body $json `
-ContentType 'application/json' `
-WebSession $session
Write-Host "`tVM Instance Name `t: " $response

$response = Invoke-RestMethod -Uri "$apiBaseUrl/command" `
-Headers @{Authorization=("Basic {0}" `
-f $base64AuthInfo)} `
-Method Post -Body $json2 `
-ContentType 'application/json' `
-WebSession $session
Write-Host "`tCreate folder Results `t: " $response
}

[/code]