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url: /daily-logs/day-1-infra/index.md
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# Day 1: The Hybrid Cloud Foundation

* **Date:** 2025-12-19
* **Status:** Success

## Context

The goal is to build an Enterprise-grade Yocto Build Farm without the enterprise budget. Cloud computing for Yocto (50GB+ builds, 12+ cores) is too expensive ($200+/mo). I need to leverage my powerful Home PC (Ryzen/Intel i9, 32GB RAM) while keeping the orchestration accessible from the internet.

## Challenges

1. **Exposure:** How to expose a local Jenkins instance securely without opening ports on my home router (security risk).
2. **Connectivity:** Connecting a Cloud VPS Master to a Local Agent behind a residential NAT.

## The Work

* **Infrastructure:** Provisioned a cheap VPS (Hetzner/DigitalOcean) running Coolify.
* **Orchestration:** Deployed **Jenkins LTS** (Dockerized) on the VPS.
* **Networking:** Setup **Cloudflare Zero Trust Tunnel**.
  * *Win:* No open ports on the home router. Traffic is tunneled securely via WebSocket.
* **Agent:** Created a custom Docker image `jenkins-agent-yocto` based on `jenkins/inbound-agent`.
  * Installed Yocto dependencies (`gawk`, `wget`, `git`, `diffstat`, `unzip`, `texinfo`, `gcc`, `build-essential`, `chrpath`, `socat`, `cpio`, `python3`, `python3-pip`, `xz-utils`, `debianutils`, `iputils-ping`, `python3-git`, `python3-jinja2`, `libegl1-mesa`, `libsdl1.2-dev`, `pylint`, `xterm`, `python3-subunit`, `mesa-common-dev`).

## Outcome

* Master is live within the Cloudflare Zero Trust Tunnel.
* Agent is running on the Home PC and successfully connected to the Cloud Master.
* I have a "Split Architecture": Brain in the Cloud, Muscle at Home.

## Next Steps

* Solve the storage problem. Yocto builds are huge. I need an Artifact Server.