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Troubleshooting across the full stack

App → OS → storage → network → virtualization → hardware → provider. Real incidents rarely respect layer boundaries.

OperationsNetworkingLinux

When production breaks, the cause is often not where the symptom appears. A slow API might be disk pressure; a 'frontend bug' might be a BGP flap; a 'network issue' might be a full root filesystem.

My incident order: measure impact → preserve data → identify root cause → restore service → validate → document. That sequence works whether it's Nginx, a MikroTik, or a Kubernetes node.

Working across web dev, NOC, sysadmin, and cloud taught me that production systems cannot be understood from only one layer.

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