Automated Pi-Hole setup in Azure

The whole concept behind Pi-Hole got me hooked: A DNS sinkhole that blocks traffic I don't want (trackers, malware, etc.). And this can be done for the whole network if you set the upstream DNS server on your router to the Pi-Hole instance. So, no add blocker needed anymore.

Disclaimer: I was not able to get it working... I got the same error discussed in this thread. So, if any skilled linuxer can fix it. I'd be glad!

The instance is quickly set up in Azure thanks to this article:

Pi-hole in Azure Container Instances

Ganessh Kumar ・ May 1 ・ 2 min read

#docker #azure #containers #pihole

I went a little further and extended the script to replace yaml placeholders via PowerShell. Line 30 to 45 shows how the replacement is done.

	# Source: https://dev.to/ganesshkumar/pi-hole-in-azure-container-instances-4abf
	# Download Azure CLI optionally
	#Invoke-WebRequest -Uri https://aka.ms/installazurecliwindows -OutFile .\AzureCLI.msi; Start-Process msiexec.exe -Wait -ArgumentList '/I AzureCLI.msi /quiet'; rm .\AzureCLI.msi
	cd $PSScriptRoot
	$subscriptionId = "1231321332144" # shown after logging in with 'az login'
	$rgName = "rg-pi-hole"
	$location = "WestEurope" # use 'az account list-locations' to list all locations
	$storageName = "piholestorage"
	$containerGroupName = "pi-hole-container-group"
	$containerName = "pi-hole-container"
	$yamlOriginalFileName = "deploy-pi-hole-original.yaml"
	$yamlModifiedFileName = "deploy-pi-hole.yaml"
	$customDnsName = "pihole"
	$webPassword = "superSecretLongAndCrazyPass22..334"
	az login
	az account set --subscription $subscriptionId
	az group create --name $rgName --location $location
	az storage account create --resource-group $rgName --name $storageName --location $location --sku Standard_LRS
	az storage share create --account-name $storageName --name etc-pihole
	az storage share create --account-name $storageName --name etc-dnsmasq
	$STORAGE_KEY=$(az storage account keys list --resource-group $rgName --account-name $storageName --query "[0].value" --output tsv)
	# prepare yaml file
	$stringsToReplace = @(
	@("<location>", $location),
	@("<container_group_name>", $containerGroupName),
	@("<container_name>", $containerName),
	@("<custom_large_string>", $webPassword),
	@("<custom_dnsname>", $customDnsName),
	@('<value of $STORAGE_KEY>', $STORAGE_KEY),
	@('<storage_name>', $storageName)
	)
	Copy-Item -Path $yamlOriginalFileName -Destination $yamlModifiedFileName
	# Replacing all placeholder in the yaml file
	foreach($replace in $stringsToReplace){
	(Get-Content $yamlModifiedFileName).replace($replace[0], $replace[1]) | Set-Content $yamlModifiedFileName
	}
	az container create --resource-group $rgName --file $yamlModifiedFileName
	az container show --resource-group $rgName --name $containerGroupName --query ipAddress.ip --output tsv

view raw Deploy-PiHoleToAzure.ps1 hosted with ❤ by GitHub

The whole gist including the yaml input file is available here.

More posts on my blog: https://engineerer.ch/