@jaakkoleskinen

Jaakko Leskinen

@jaakkoleskinen

Because production meltdowns are so last Tuesday. (DevOps, Kubernetes, & the art of not panicking.)

Joined December 2024

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Jaakko Leskinen's blogs

Deploy Harmlesslydeployharmlessly.dev16 posts

Mostly Healingmostlyhealing.fi2 posts

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Recently published

JLJaakko Leskinendeployharmlessly.devJul 1, 2025 · 9 min read

Forging a Babel Fish for Rust in Cursor

Getting your AI to speak fluent Rust instead of some vaguely C-like dialect it dreamed up is a noble cause. It's like teaching a Vogon to appreciate poetry—difficult, but the results are totally worth it. 🚀 Introduction You're using Cursor with Rus...

JLJaakko Leskinendeployharmlessly.devJun 25, 2025 · 3 min read

Dry-Run Mode: The "Are You Sure?" Button for Kubernetes

Picture this: You confidently type a kubectl apply command, hit enter, and watch in horror as half your cluster disappears into the abyss. Congratulations, you just became the DevOps legend who accidentally deleted production. If only Kubernetes had ...

JLJaakko Leskinenmostlyhealing.fiMar 22, 2025 · 4 min read

Kun menneisyys ei pysy menneisyydessä

Aikamatkustus ilman lupaa Menneisyys ei tarvitse muistia herätäkseen eloon. Se ei palaa sanoina tai kuvina, vaan kehona, joka jännittyy ilman syytä. Hengityksenä, joka muuttuu pinnalliseksi jo ennen kuin tiedostat miksi. Sydämenä, joka hakkaa kuin hä...

JLJaakko Leskinendeployharmlessly.devMar 14, 2025 · 4 min read

Port Forwarding: Expose Services Like a Secret Hacker

Sometimes, Kubernetes services are locked away inside the cluster, accessible only to other pods. This is great for security but a nightmare when you need to debug something. Ever needed to test a database connection, but it’s only available inside K...

JLJaakko Leskinendeployharmlessly.devMar 9, 2025 · 5 min read

Debugging and Forensics: CSI Mode for Your Cluster

Kubernetes is great—until something goes wrong. Then, it turns into a black box of cryptic failures, disappearing logs, and misbehaving workloads that refuse to explain themselves. Most debugging attempts follow the same cycle: Run kubectl get pods ...

Jaakko Leskinen

About

Available for

Jaakko Leskinen's blogs

Recently published

Forging a Babel Fish for Rust in Cursor

Dry-Run Mode: The "Are You Sure?" Button for Kubernetes

Kun menneisyys ei pysy menneisyydessä

Port Forwarding: Expose Services Like a Secret Hacker

Debugging and Forensics: CSI Mode for Your Cluster

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Jaakko Leskinen

About

Available for

Jaakko Leskinen's blogs

Recently published

Forging a Babel Fish for Rust in Cursor

Dry-Run Mode: The "Are You Sure?" Button for Kubernetes

Kun menneisyys ei pysy menneisyydessä

Port Forwarding: Expose Services Like a Secret Hacker

Debugging and Forensics: CSI Mode for Your Cluster