Understanding Kubernetes: A Beginner's Guide to Container Orchestration
If you have already explored Docker , you know how convenient containers are. You package your application, dependencies, and environment into a nea…
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Docker Demystified: The Ultimate Guide to Containers and Architecture
If you have ever dealt with the nightmare of "it works on my machine but crashes in production," you have felt the pain that containerization was bu…
Practice Linux, Docker and kubectl in Your Browser, No VM Required
Reading about chmod is not the same as typing it. Everyone who learned the terminal knows this, and everyone who teaches it says the same thing: you…
Docker Says "Healthy" and the Pod Keeps Sending Broken Traffic
Run this on any Kubernetes cluster that has containers with HEALTHCHECK defined in their Dockerfile and no livenessProbe or readinessProbe configure…
Visio-Display: Building a Self-Hosted Digital Signage Platform
I have been developing Visio-Display , a free and open-source digital signage platform released under the GPL-3.0 license . The project started with…
VectorAI DB Doesn't Embed Your Text, and That's the Point
Building a small local knowledge base on top of Actian VectorAI DB, the actual challenge wasn't the database. It was easy to accidentally fake seman…
Docker Swarm Said “Insufficient Resources.” The Running Service Was Using 480 KiB
I expected this task to schedule. The running service was barely doing anything: MemoryUsage=480KiB / 5.772GiB MemoryPercent=0.01% CPU=0.00% Then I…
wkhtmltopdf in Docker in 2026: musl, libssl1.1, and the ways out
Disclosure up front: I'm Vitalii, founder of PDFik , a hosted URL/HTML-to-PDF API. It shows up once near the end, clearly marked. The rest of this i…
Docker Networking Explained: Bridges, DNS and Why localhost Breaks
A mental model for Docker networks: how containers find each other, when to publish ports, and the difference between expose and ports. The mental m…
Health Checks in Docker Compose: Startup Order and Self-Healing
Write health checks that reflect real readiness, gate dependent services on them, and enable automatic recovery from wedged states. Why "running" is…
Deploying DeepSeek R1 Reasoning LLM Using SGLang
DeepSeek R1 is a first-generation reasoning model tuned for math, coding, and logical reasoning — reinforcement learning with a cold-start phase for…
Docker in Production: What Changes When Containers Meet Reality?
post 8: You run a container. It starts successfully. The application works. So… is it production-ready? Not necessarily. The real test of a producti…
Multi-stage builds in Docker: smaller, cleaner images
There's a particular kind of waste that happens in Docker images and that everyone accepts as normal until someone points it out: shipping the compi…
Your agent's 'secure' network policy was off unless you did four steps — so it was off
If you run an autonomous LLM agent in a container, here is a question worth sitting with: is your network egress policy actually enforced, or is it…
How I Automated a 3-Tier Application CI/CD Pipeline with Docker, Azure & GitHub Actions
How I Automated a 3-Tier Application CI/CD Pipeline with Docker, Azure & GitHub Actions I recently completed a hands-on DevOps project where I t…
Why Your Self-Hosted Stirling-PDF Container OOMs, Hangs or Returns a Broken PDF: 15 Anti-Patterns and Their Fixes
Stirling-PDF is not an unstable application. Almost every crash, hang and quietly mangled output traces back to one of fifteen decisions you made ou…
Put an Orange In Your Pulp
Welcome back dear reader, I am Alex M. Schapelle, AKA Silent-Mobius, your Semi-automated cog-engine. As the time of machine is upon us, also known a…
Installing Minikube on Debian
Installing Minikube on Debian Minikube is a practical way to run a small Kubernetes cluster on a Debian workstation or development instance. This gu…
Install Docker Engine on Debian
Install Docker Engine on Debian Docker Engine provides the daemon, CLI, and runtime needed to build and run containers on Debian. This guide install…
🧐 ECS Express Mode vs Traditional ECS: A Hands-on Comparison with Terraform
Hola Amigos 👋 Welcome to the world of Cloud and Automation! AWS launched ECS Express Mode in late 2025, and in today’s blog, we will understand how…
Iskor Devlog #1 - Learning a Little Bit of Everything
Introduction Frontend Studied the common signs of a vibecoded website and avoided it. Backend Used Spring Boot and learned SOLID principles. Authent…
Kubernetes Explained: Why Every Cloud & DevOps Engineer Should Learn It 🚀
Imagine you have one application running on a single server. Everything is fine. Then your users increase from 1,000 → 10,000 → 100,000 . Suddenly,…
AWS EC2 Deployment — Q&A Reference
A reference guide compiled from deploying two Node.js/Docker apps to AWS EC2, covering the real issues hit and how they were fixed. 1. Getting Conne…
Put Your Docker Images on a Diet with Alpine Linux (2015)
Archival repost — originally published on my old blog on June 21, 2015, back when Alpine was still a dark-horse pick rather than the default. Alread…
Building Production Readiness into a Flask ERP Project
Building ERP_cloud , a Flask-based ERP platform, has taught me that production readiness goes far beyond getting the application working. Recently,…
A container per job, without a daemon
Some workloads want an image each. A build that needs a specific toolchain, a test that needs a specific database client, a task whose dependencies…
Setting up an IPv6 only VM
Too many applications are still using IPv4 only, which is a shame as IPv6 was standardised ~28 years ago. If you want to check if your application i…
Stop Copy-Pasting Parts in Docker Compose
Imagine you have a complex microservice. For local development, you need it connected to a message queue, a telemetry collector, and a database. But…
Deploying Multiple Python Bots to a Single Railway Container
A tutorial for running two or more python bots on Railway inside one container and one service, with independent crash recovery for each. Deploying…
Docker, Index, and a very expensive lesson in reading pricing tables
Quiet learning day, mostly — until AWS almost let me subscribe to something that costs $57,600 a month. Dockerizing Bludit, locally Containerized ng…