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Zeller.sh

Zeller.sh

Everything that interests me.

Who am I
Who am I
Some information about myself.
PowerShell
My Powershell posts.
Azure
My Azure posts.
DNS management with a CI/CD pipeline

As we started working with Terraform on work, I thought about a fun process to learn it a bit, I started to implement my Public DNS records as code. While doing that I learned about an DNS PRovider agnostic way, using the tool DNSControl.

DNSControl is a way to implement, DNS as Code where the configuration of the DNS records is as Provider independent as possible.
The nice thing for that is, that you have your DNS configuration on a Provider independent file and that you can simply add comments to your records to explain why they are there and who requested them.

Andreas ZellerOctober 10, 2024About 6 minCloudDNSGithubCloudflareHomelabDNSControlIAC
Reset different Notebook Models for Intune

At the place where I work we have the problem that we have multiple different notebook models and manufacturer in use and sometimes need to reset those devices via USB. While I was searching for a way to make the deployment as easy as possible, and create the possibility to have multiple languages on a single USB, I learned about OSDCloud. OSDClouds makes it possible to install different drivers and languages on Notebooks from a single USB stick without the need to create custom Windows Images. The Creation of an USB with OSDCloud is quite straightforward.

A tldr is available on the bottom of the page.

Andreas ZellerOctober 8, 2024About 5 minPowershellIntuneOSDCloudPowershellIntune
Use Dynamic DNS with Azure DNS zones

I wanted to use Azure DNS Zones for my personal domains. The problem I noticed was, that I cannot use a CName record at the root of a Domain. To host my Website and some more stuff at my home, where I have a dynamic IP adress, I needed to find a way to update a Azure DNS A-Record when my Public IP Address changes.

The solution I decided to use, was to create a powershell script which is scheduled and updates the DNS records on IP change.

Andreas ZellerMay 20, 2023About 4 minPowershellCloudDDNSAzureAzureCLIPowershellHomelab
Use Powershell Secret Store with Service Accounts

Sometimes it's needed to use secrets or passwords in scheduled Powershell Scripts. Those secrets should not be written down in the script directly. To do that more securely the Powershell Secret Store should be used.

With the Secret Store Module, the secrets can be securely saved on the Device. A secret saved by the Secret Store Module is encrypted and only the account which created the secret can read it.

Andreas ZellerFebruary 25, 2023About 2 minPowershellPowershellPasswordsSecret ManagementSecrets