3374
MariaDBERRORCommonSecurity / KeyringHIGH confidence
Keyring plugin data is corrupt
Production Risk
Critical — all encrypted data is inaccessible until keyring is restored.
How to reproduce
trigger — this will error
trigger — this will error
-- Triggered on server start or first keyring operation when keyring file is corrupt.
expected output
ERROR 3374 (HY000): Keyring plugin data is corrupt.
Fix
Restore keyring file from backup
Restore keyring file from backup
-- Stop MySQL, replace keyring file with backup, restart MySQL.
Why this works
A valid keyring file allows MySQL to re-read all stored encryption keys.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3374 ER_KEYRING_PLUGIN_DATA_CORRUPT
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