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The release that breaks: roll back first, diagnose second

Restore the service before understanding the failure, then diagnose on the faulty release you kept intact.

22 minutesTechnical content last reviewed on 9 Aug 2026

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What this lesson builds

  • Deploying a version you can switch back from
  • Narrowing an unknown failure to one component
  • Running a service under systemd, from first start to automatic recovery