CNCG Graz Meetup, April 2026 @Trever
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🚀 CNCG Graz Meetup – April 2026 @ trever
Join us for our next CNCG Graz Meetup in Graz!
Expect an evening full of cloud-native insights, community exchange, and great conversations.
This time, we’ll start with a short KubeCon recap, followed by a talk by Erwin Tumbul and Daniel Drack about migrating a live AWS CDK setup to OpenTofu and GitOps.
They’ll share their journey, the reasoning behind the migration, and the unexpected challenges they faced along the way. ☁️🛠️
### 📅 Date & Time
Thursday, April 16, 2026
5:00 PM – 7:00 PM
### 📍 Location
trever
Gadollaplatz 1
Graz
### 🍕 Food, Drinks & Pub Quiz
Food and drinks are sponsored by trever.
We’ll also have our traditional CNCG Graz Pub Quiz with swag from trever. 🎁
### 👋 Agenda
🕔 5:00–5:10 PM — Welcome & Introduction
Kickoff by the Cloud Native Community Group Graz Team.
🏢 5:10–5:20 PM — Welcome by trever
Meet our hosts and learn more about trever.
🌍 5:20–5:35 PM — KubeCon Recap
A short recap with highlights, impressions, and takeaways from KubeCon.
🎤 5:35–6:15 PM — Talk
Update In-Place: Migrating a CDK Stack to OpenTofu and GitOps
Erwin Tumbul and Daniel Drack
Like many start-ups, we outgrew some of our early architectural decisions faster than expected.
AWS CDK was the perfect tool to get us off the ground quickly, letting us manage AWS resources and Kubernetes workloads in a single place, kept perfectly in sync with our backend inside a monorepo.
Over time, however, that tight coupling made the deployment process painfully slow. Even a small change could trigger a re-evaluation of a massive web of stacks and nested stacks.
In this talk, Erwin and Daniel will share how they migrated to a decoupled architecture using OpenTofu for the AWS backbone and ArgoCD for Kubernetes workloads.
Rather than rebuilding everything from scratch, they adopted parts of their live AWS infrastructure in-place using state imports.
They will walk through the transition from CDK state dumps to reusable OpenTofu modules and Helm Charts for all environments, and share the unexpected hurdles they encountered along the way — including configuration drift during migration, a largely unplanned live VPC rebuild, and some highly inconvenient CDK behavior regarding Cognito UserPools.
🧠🎮 6:15–6:35 PM — CNCG Graz Pub Quiz
Fun, nerdy, and full of cloud-native trivia — with cool swag from trever to win.
🍕🥤🤝 From 6:35 PM — Networking, Food & Drinks
Stay for relaxed conversations, food, drinks, and community networking.
A big thank you to trever for hosting and sponsoring our April meetup! 💙