How I Used AI to Prepare for the CKA
How I used Claude Code and the CK-X exam simulator to generate around 10 custom CKA mock exams focused on my weak spots, and passed with 85%.
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7 articles on DevOps, self-hosting and infrastructure.
Reduce Memory Usage of Gitlab Server
How I reduced a self-hosted GitLab server's memory usage from 8GB to about 3.6GB by tuning Puma, Sidekiq, Prometheus and swap.
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Migrate GCP CloudSQL Between Projects
How to migrate a Google Cloud SQL database between GCP projects using the Cloud SQL Admin API, since there is no direct Web UI or CLI option.
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Dump and restore Postgres database using Docker
How to dump and restore a PostgreSQL database using Docker containers, without installing Postgres on your machine.
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Configuring S3 backup for Longhorn
A guide on how to configure an S3 backup target (MinIO or Backblaze) for Longhorn on a k3s/Kubernetes cluster.
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Docker in WSL 2
A guide on how to install and run Docker natively in WSL 2 on Windows, without Docker Desktop.
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Certbot DNS Challenge
A guide on how to use the DNS challenge with Cloudflare and Certbot to issue and renew SSL certificates without stopping NGINX.
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