eBPF & Cilium for Platform Engineers

The Verifier and Safety

Running arbitrary code in the kernel sounds terrifying, one bug could crash the whole machine. The eBPF verifier is what makes it safe, and understanding it explains both eBPF's power and its constraints.


The Concept Explained

Coming soon.


How It Works

Coming soon.


Practical Application

Coming soon.


Tradeoffs and Decision Framework

Coming soon.


Common Mistakes

Coming soon.


INTERVIEW QUESTION

How does the eBPF verifier make it safe to run code in the kernel? What constraints does it impose, and why can't eBPF programs contain unbounded loops?