Author: admin

  • Solved: Blank Screen After Login in Gnome Shell 44

    Background: I have an old desktop computer running Fedora 36 + Gnome Shell desktop environment and upgraded to 38 recently. It was used as an archive so I left it in garage and only connect to it vis SSH or VNC. Now I moved it into my home office because I think it can act…

  • Terraform: String Manipulation for Default Domains

    Imaging when I needed to grant access to a Google storage bucket for a list of Google service accounts, I put the list in YAML like this: Assuming horizon is the default GCP project and mass-effect is a partner project and most GSAs are of course from the default project. So can this list be…

  • How to Replace Characters in MongoDB

    TL; DR: As of MongoDB 6.0, this is how I learned to replace some characters in a field in all documents. In the example below all “.” characters in field_name will be replaced by “_” character: The backstory is when using MongoDB with MongoEngine, there’s an issue when a key in a dictionary field contains…

  • How to Sort Lines in YAML

    I asked myself this question and it turns out that I don’t need to write a script to do this, yq has the answer already. More on array sorting and map sorting 🙂

  • Sample Terraform Code to Manage Temporary Access to GCP

    TL; DR: This is a way to grant a temporary access to some GCP resources using Terraform’s time_static and google_project_iam_member resources. 🙂

  • Solved: Uninstallation of config-connector Got Stuck in ArgoCD

    The Kubernetes Config Connector is another level of IaC(Infrastructure as Code): It wraps Google Cloud resources like a Cloud Load Balancer with Kubernetes CRDs(Custom Resource Definition) so instead of writing Terraform HCL I can write YAML to manage GCP infrastructure. However when there’s a need to uninstall a config-connector, it got stuck in ArgoCD As…

  • SAUS: Such A URL Shortener

    TL; DR: It’s a simple but effective URL shortener I wrote in Python + Django, I consider it stable now. Also added QR code generator for mobile applications. Source code is in Github. 🙂

  • How to Serve QR Images from Memory with Django

    TL; DR: I used SpooledTemporaryFile with FileResponse to server generated QR images directly from memory, no disk IO involved. Please see my code sample with notes: 🙂