Subscription and Repo GPG Key Error After Mirror Rotation

📖 ~1 min read

Table of contents

1. Symptom & Impact
2. Environment & Reproduction
3. Root Cause Analysis
4. Quick Triage
5. Step-by-Step Diagnosis
6. Solution – Primary Fix
7. Solution – Alternative Approaches
8. Verification & Acceptance Criteria
9. Rollback Plan
10. Prevention & Hardening
11. Related Errors & Cross-Refs
12. References & Further Reading

Symptom & Impact

Package installs and updates are blocked by signature validation errors.

Environment & Reproduction

Repository mirror or signing key changed during maintenance window.

Root Cause Analysis

Host trust store lacks current repository signing key.

Quick Triage

Inspect dnf transaction output and repo gpgkey entries.

Step-by-Step Diagnosis

Verify installed RPM GPG keys and compare fingerprints to official source.

Solution – Primary Fix

Import correct GPG key and retry dnf makecache and update.

Solution – Alternative Approaches

Temporarily pin to known-good internal mirror while rotating keys.

Verification & Acceptance Criteria

Packages validate signatures and transactions complete successfully.

Rollback Plan

Revert mirror config and remove incorrect imported keys.

Prevention & Hardening

Track key rotation events and automate trusted key deployment.

Related Errors & Cross-Refs

Public key for package is not installed, GPG check FAILED.

Related tutorial: View the step-by-step tutorial for oracle-linux-10.

View all oracle-linux-10 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

Oracle Linux repository and GPG trust documentation.