How to answer this Technical interview question about Debugging for Senior-Level DevOps Engineer?

What are the steps you take to debug a critical issue in production?

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DevOps Engineer

Technical

Asked at

Netflix

Difficulty :

Hard

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A popular meme image featuring the Marvel character Thanos with the caption “A small price to pay for salvation,” commonly used to humorously express acceptance of a minor sacrifice for a greater benefit.

Explanation

This question evaluates your problem-solving skills and ability to handle high-pressure situations. Recruiters want to see your systematic approach to identifying and resolving issues without causing further disruption. A strong answer includes specific tools, techniques, and an example of a successful resolution. Avoid vague or overly simplistic explanations.

A popular meme image featuring the Marvel character Thanos with the caption “A small price to pay for salvation,” commonly used to humorously express acceptance of a minor sacrifice for a greater benefit.

Answer Example

I start by reproducing the issue in a staging environment and analyzing logs to pinpoint the root cause. For example, during a production outage caused by a memory leak, I used monitoring tools like Dynatrace to identify the problematic service. After deploying a hotfix, I implemented additional monitoring to prevent recurrence, reducing downtime to under 30 minutes.

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That's it! Give it a go!
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