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PASSEDserver / package_repository_corruption
Package Repository Corruption
The internal package repository mirror becomes corrupted after a failed rsync, causing all package installation and update operations across the Linux fleet to fail. Servers cannot install security patches or new application dependencies.
Pattern
UNKNOWN
Severity
CRITICAL
Confidence
85%
Remediation
Auto-Heal
Test Results
| Metric | Expected | Actual | Result |
|---|---|---|---|
| Pattern Recognition | UNKNOWN | UNKNOWN | |
| Severity Assessment | CRITICAL | CRITICAL | |
| Incident Correlation | Yes | 4 linked | |
| Cascade Escalation | N/A | No | |
| Remediation | — | Auto-Heal — Corax resolves autonomously |
Scenario Conditions
Internal Apt mirror serving 150 Ubuntu servers. Repository metadata corrupted during interrupted rsync. All apt-get operations failing with hash sum mismatch. Security patching halted across fleet. New application deployments blocked.
Injected Error Messages (1)
Internal package repository repo01 corrupted — all apt-get operations failing across 150 servers with hash sum mismatch errors, repository metadata inconsistent after interrupted rsync, InRelease file signature invalid, package installation and security updates blocked fleet-wide, new application deployments failing on dependency resolution
Neural Engine Root Cause Analysis
The package repository repo01 has corrupted metadata due to an interrupted rsync operation, resulting in hash sum mismatches and invalid InRelease file signatures. This corruption is blocking all apt-get operations across 150 servers, preventing package installations, security updates, and new deployments. The repository service appears to be running but serving corrupted/inconsistent metadata that fails cryptographic verification.
Remediation Plan
1. Stop the repository service on repo01 (10.10.6.80) to prevent further corrupt operations 2. Backup current corrupted state for analysis 3. Remove corrupted metadata files (InRelease, Release, Packages.gz) 4. Re-sync repository from upstream source with proper verification 5. Regenerate repository metadata and signatures 6. Validate repository integrity before restart 7. Restart repository service 8. Test package operations from affected servers 9. Clear apt cache on client servers if needed
Tested: 2026-03-30Monitors: 1 | Incidents: 1Test ID: cmncjzex405upobqe9afl40j7