3338
MySQLERRORCommonSecurity / KeyringHIGH confidence
Keyring UDF: keyring service is unavailable
Production Risk
Critical — encryption key operations fail; encrypted data may be inaccessible.
How to reproduce
trigger — this will error
trigger — this will error
SELECT keyring_key_store('mykey', 'AES', '0123456789abcdef');expected output
ERROR 3338 (HY000): Can't initialize keyring UDF: keyring service is not available.
Fix
Load the keyring plugin
Load the keyring plugin
-- Add to my.cnf: [mysqld] early-plugin-load=keyring_file.so
Why this works
Keyring UDFs depend on the keyring service being active at server start.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3338 ER_KEYRING_UDF_KEYRING_SERVICE_UNAVAILABLE
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