The error "Secureboot - GRUB key validation failed" may occur during an upgrade on Juniper MX and PTX routers. This indicates a problem with the secure boot process, preventing the router from loading the new firmware.
"Secureboot - validating grub key
Secureboot - grub key validation failed
1
ERROR: Upgrade failed"
Common Causes:1. Corrupted GRUB Configuration: Issues in the GRUB bootloader configuration can lead to validation failures.2. Missing or Incorrect Keys: Required cryptographic keys may be missing or not matching the expected values.3. Incompatible Firmware: The new firmware may not be compatible with the current GRUB version or key setup.4. Unauthorized Changes: Modifications to boot files or configurations can trigger security checks.5. File System Corruption: Corruption in the file system can affect the boot process.
Troubleshooting Steps:
1. Confirm Firmware Compatibility
> show system firmware - Verify that the new firmware version is compatible with your router's hardware and existing configuration.- Review the release notes for any specific requirements regarding upgrades.
2. Roll Back Firmware
> request system software rollback- If the upgrade fails, consider rolling back to the previous firmware version that was functioning correctly.
3. Use USB Recovery Mode
Reference KB for USB recovery: https://supportportal.juniper.net/s/article/Junos-How-to-mount-a-USB-drive-on-EX-SRX-MX-QFX-Series-platforms-to-import-export-files?language=en_US- If necessary, boot into recovery mode to access the system and troubleshoot further.- This may involve using a USB drive or console access to bypass secure boot checks.
4. Consult Logs- Check the system logs for any error messages related to the boot process: >show log messages > show log chassisd- Review boot-up logs for additional insights.
5. Replace the Routing Engine:- If the above steps do not resolve the issue, it may be necessary to replace the Routing Engine (RE).
Additional Recommendations- Always back up current configurations and firmware before performing an upgrade.- Regularly update firmware to the latest stable version to avoid known issues.- If problems persist, consider reaching out to Juniper technical support for further assistance.