Copy All AppSettings and ConnectionStrings from One Azure Webapp to Another

copy_azure_configs.ps1

<#
.SYNOPSIS
  Powershell Script that copies AppSettings and ConnectionStrings between from one Azure Web App to another on the same subscription
.Description
  Pass the old and new resource group and webapp names to this script and it will copy the settings over seamlessly
.NOTES
  Version:        1.0
  Author:         jcefoli
  Creation Date:  7/27/2017
  This script assumes you have the AzureRM Powershell modules installed, are logged into your Azure Account (Login-AzureRmAccount) and on the correct Subscription

.PARAMETER FromResourceGroup
  The resource group of the Web App to copy settings FROM
.PARAMETER FromWebApp
  Azure Web App to copy settings FROM
.PARAMETER ToResourceGroup
  The resource group of the Web App to copy settings TO
.PARAMETER ToWebApp
  Azure Web App to copy settings FROM
.EXAMPLE
  ./copy_azure_configs.ps1 -FromResourceGroup "old-resource-group" -FromWebApp "old-webapp" -ToResourceGroup "new-resource-group" -FromWebApp "new-webapp"
  This will recursively run all scripts except those with filenames matching "*RunOnce*" in E:\SQL\v1_1 against the database specified in the connectionString. -SQLFolderSuffix may be a NULL string
#>

param (
    [string]
    $FromResourceGroup = $(throw "-FromResourceGroup is required."),
    [string]
    $FromWebApp = $(throw "-FromWebApp is required."),
    [string]
    $ToResourceGroup = $(throw "-ToResourceGroup is required."),
    [string]
    $ToWebApp = $(throw "-ToWebApp is required.")
)

#Get some data. We'll use these later
$fromWebappObject = Get-AzureRMWebApp -ResourceGroupName $FromResourceGroup -Name $FromWebApp
$fromappSettingList = $fromWebappObject.SiteConfig.AppSettings
$fromConnStringsList = $fromWebappObject.SiteConfig.ConnectionStrings

#Create hash table of AppSetings
$appSettingsHashTable = @{}
ForEach ($kvp in $fromappSettingList) {
  $appSettingsHashTable[$kvp.Name] = $kvp.Value
}

#Create hash table of ConnectionStrings
$connStringsHashTable = @{}
ForEach ($kvp in $fromConnStringsList) {
  $connStringsHashTable[$kvp.Name] = @{ Type = $kvp.Type.ToString(); Value = $kvp.ConnectionString }
}

#Update AppSettings Config on new Web App
Set-AzureRMWebApp -ResourceGroupName $ToResourceGroup -Name $ToWebApp -AppSettings $appSettingsHashTable

#Update ConnectionStrings Config on new Web App
Set-AzureRmWebapp -ResourceGroupName $ToResourceGroup -Name $ToWebApp -ConnectionStrings $connStringsHashTable

Write-Host "[DONE] - Copied AppSettings and ConnectionStrings from $FromWebApp to $ToWebApp"