SHIFT-WIKI - Sjoerd Hooft's InFormation Technology
This WIKI is my personal documentation blog. Please enjoy it and feel free to reach out through blue sky if you have a question, remark, improvement or observation. See below for the latest additions, or use the search or tags to browse for content.
Configure Request Header Forwarding in AWS Application Load Balancer and Apache
Summary: This wiki page shows how to configure both AWS Application Load Balancer and Apache to forward the request header to a backend container.
Date: 30 January 2026
To start, this is the setup we're talking about:
As you can see, the application load balancer receives the request from clients and needs to forward the client IP address to the apache container, which then forwards it to the backend application container. To achieve this, we need to set the “X-Forwarded-For” header in both the load balancer and apache configurations.
PowerShell and Bash Prompt with Git Branch
Summary: This wiki page shows how I configure my PowerShell and bash prompts to include my current git branch and path.
Date: 1 March 2025
I work a lot from the command line, both in PowerShell and in Bash. I also work a lot with git repositories, and I really don't like it to constantly check what branch I'm in, or to not be able to read my commands I'm typing because I'm so deep into a directory. To fix that, I created my own custom prompt, for both PowerShell and Bash, that shows me (at least):
- if inside a git repository
- show current git branch
- show only the last 2 parts of the path, but like this: C:\…\part1\part2
Kubernetes Nodepool Scheduling
Summary: This wiki page shows how I configure my AKS nodepools and migrate pods between nodepools if needed.
Date: 2 January 2026
I would like to start with explaining what nodepools are, especially in Azure Kubernetes Service (AKS). However, sometimes, the documentation is just very good:
In Azure Kubernetes Service (AKS), nodes of the same configuration are grouped together into node pools. Node pools contain the underlying VMs that run your applications. System node pools and user node pools are two different node pool modes for your AKS clusters. System node pools serve the primary purpose of hosting critical system pods such as CoreDNS and metrics-server. User node pools serve the primary purpose of hosting your application pods.
Terraform Override File
Summary: This wiki page shows how to use terraform override files to make it more convenient to work locally.
Date: 1 January 2026
I use terraform override files to test my terraform code which I make publicly available. This allows me to really test the code and make sure all of the small errors and mistakes are gone, and the code is ready for use. There are several use cases for using override files, but as the documentation says, use them sparingly.