Writing
Notes from production, not from a lab.
What actually breaks in cloud infrastructure, what it costs, and what I would do differently. Written for the engineer who has to run it on Monday.
- 01
Field note · Cloud cost
The $438 cluster nobody approved
EKS extended support costs six times standard support, starts automatically, and nobody has to approve it. How to check whether you are paying it right now.
20 September 2026 · 5 min read
6× price increase
- 02
Field note · Cloud cost
Paying twice to pull the same image
NAT Gateway charges $0.045 per GB. Every image pull from a private subnet goes through it. What that costs at scale, and the endpoints that stop it.
20 September 2026 · 5 min read
$0.045 → $0
- 03
Field note · Cloud cost
Where your EKS bill actually goes
The compute line item is the one everybody looks at. It is rarely the one that grew. Five charges that hide inside a Kubernetes cluster, and how to find them.
20 September 2026 · 6 min read
5 hidden line items
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