When Your Logs Lie: Uncovering the Hidden Linux Routing Issue Behind Failed Deployments

Deployment troubleshooting is often guided by error messages that point toward obvious culprits like firewalls and DNS. This incident demonstrates a critical lesson: misleading logs can trap engineers in endless retry cycles, wasting time and burning through rate limits. By shifting from log-dependent diagnostics to hands-on packet analysis with tools like tcpdump, teams can identify hidden infrastructure issues that standard checklists completely miss—essential wisdom for anyone managing complex deployments.