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Lab 4 submission#1104

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G-Akleh wants to merge 4 commits into
inno-devops-labs:mainfrom
G-Akleh:feature/lab4
Open

Lab 4 submission#1104
G-Akleh wants to merge 4 commits into
inno-devops-labs:mainfrom
G-Akleh:feature/lab4

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@G-Akleh

@G-Akleh G-Akleh commented Jun 16, 2026

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Goal

Analyze and debug a broken QuickNotes deployment using OS and networking tools, including packet capture and outside-in investigation.

Changes

  • Added TCP packet capture and annotated trace (lab4-trace.txt)
  • Documented OS/network debugging outputs (ss, ip route, mtr, dig, journalctl)
  • Performed outside-in debugging of port conflict issue
  • Added repair steps and verification

Testing

  • Captured and analyzed HTTP POST request via tcpdump
  • Verified service behavior using curl, ss, and ps
  • Reproduced and resolved port binding conflict
  • Confirmed recovery via /health endpoint returning 200

Checklist

  • Title is a clear sentence (≤ 70 chars)
  • Commits are signed (git log --show-signature)
  • submissions/labN.md updated

G-Akleh added 4 commits June 9, 2026 22:16
Signed-off-by: G-Akleh <ghadeer_akleh@hotmail.com>
Signed-off-by: G-Akleh <ghadeer_akleh@hotmail.com>
Signed-off-by: G-Akleh <ghadeer_akleh@hotmail.com>
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