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# The Intermittent SSL Certificate Error: A 3-Hour Debugging Journey

2025-11-25 9 min read

I checked certificates, restarted services, cleared caches, and verified backend servers - everything looked perfect. The culprit? Two HAProxy processes running simultaneously on the same port.

devops linux ubuntu server case-study ssl haproxy

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# The Mystery of the Daily Server Crashes

Case Studie 1 / 2

2025-11-20 12 min read

In the world of systems administration, few things are more frustrating than recurring server crashes with no obvious cause. This is the story of a production mail server that began experiencing…

devops linux ubuntu server case-study

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