4085
MySQLERRORCommonHIGH confidence
InnoDB redo log encryption not supported in this configuration
Production Risk
High — Without encryption support, encrypted redo logs cannot be read and the server may fail to start.
Why it happens
- 1innodb_redo_log_encrypt=ON but no keyring plugin is loaded.
- 2The keyring plugin failed to initialize before InnoDB started.
Fix 1
Install and configure a keyring plugin
Why this works
Load keyring_file or keyring_vault plugin before enabling redo log encryption.
Fix 2
Verify keyring plugin is active
Verify keyring plugin is active
SELECT PLUGIN_NAME, PLUGIN_STATUS FROM information_schema.PLUGINS WHERE PLUGIN_NAME LIKE 'keyring%';
Why this works
Confirms whether the keyring plugin is loaded and active.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 4085 ER_INNODB_REDO_LOG_ENCRYPT_NOT_SUPPORTED
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