Hi, I'm David Tio

Welcome to FOSSTECH NOTES — my collection of Linux and DevOps tutorials based on real-world experience.

What You'll Find Here

This blog covers practical guides for:

  • Linux System Administration — LVM, storage, networking, security
  • DevOps Tools — Docker, Kubernetes, Podman, CI/CD
  • Logging & Monitoring — Syslog-ng, log visualization, troubleshooting
  • Infrastructure — LDAP, Active Directory integration, automation

All tutorials are tested in production environments — no theory without practice.

About Me

I'm a Linux/DevOps engineer and Technical Manager at Transcend Solutions Pte Ltd in Singapore with 5+ years of hands-on experience:

  • Training engineers on Docker and containerization
  • Advising on production infrastructure architecture
  • Rolling out container solutions in real environments

I wrote the book I wished existed when I started — practical, concise, and straight to the point.

📚 My Book

Levelling Up with Docker: A Practical Guide to Containers

A hands-on guide for Linux admins who want to learn Docker without the fluff.

What's inside:

  • Rootless Docker installation (Ubuntu, RHEL, SLES)
  • Container networking and volumes
  • Docker Compose for multi-service apps
  • Private container registry setup
  • Troubleshooting playbook

Get it on Amazon: https://www.amazon.com/dp/B0GGZ76PHW

Other Projects

Project Description
tioPDF Free online PDF editor (upload, edit, sign, download)
Tio Notes (YouTube) Tech tutorials on Docker, Kubernetes, Linux
Tio Notes (Social) Daily tips on LinkedIn, X, Facebook

Connect With Me

Work With Transcend Solutions

For Linux consultancy and professional services:

Transcend Solutions Pte Ltd
I'm the Technical Manager here. We provide:

  • Hybrid Cloud — Secure, scalable hybrid cloud solutions
  • Database Services — Enterprise database architecture, migration, optimization
  • Digital Workspace — Modern workspace solutions for secure access
  • Modernised Application Platform — Cloud-native and container-based applications
  • Data Protection & Business Continuity — Backup, recovery, continuity strategies
  • Network & Security — Network architecture, threat prevention, compliance

Contact: sales@transcend.com.sg
Tel: 6828 9800
Web: transcend.com.sg

Last updated: February 2026

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