MySQL could not record the master key rotation event in the binary log even though the key rotation itself finished, risking replication and recovery inconsistencies.
ER_MASTER_KEY_ROTATION_BINLOG_FAILED means MySQL rotated the InnoDB master encryption key but failed to write the event to the binary log, jeopardizing replicas. Verify binlog availability, disk space, and privileges, then rerun key rotation or restart MySQL with proper logging to resolve the issue.
ER_MASTER_KEY_ROTATION_BINLOG_FAILED
The message appears when MySQL finishes rotating the InnoDB master encryption key but cannot append the corresponding event to the binary log. The key change is valid on the primary node, yet replicas will not see it, leaving them with old keys and possibly unreadable data.
The error was introduced in MySQL 5.7.11 alongside tablespace encryption support. It carries SQLSTATE HY000, indicating a general internal error, and halts further processing that requires a consistent binlog stream.
A full binary log disk, readonly file system, or insufficient filesystem permissions can block MySQL from writing the Rotate InnoDB Master Key event. Network filesystems mounted with restrictive flags can produce the same symptom.
Disabling or pausing binary logging with log_bin=OFF during key rotation will guarantee failure. Starting rotation on a replica configured with super_read_only can also trigger the error.
First, confirm that binary logging is enabled and writable: SHOW VARIABLES LIKE 'log_bin';. Check datadir disk space and file permissions. Ensure the mysqld OS user can append to binlog files.
After correcting the environment, rerun master key rotation using ALTER INSTANCE ROTATE INNODB MASTER KEY;. Monitor the error log to confirm a successful binlog write.
In replication setups, promote a healthy replica if the primary cannot log the event quickly. Alternatively, stop replicas, copy the new keyring from the primary, and restart replicas with –relay-log-recovery after the fix.
For cloud managed MySQL where direct file access is blocked, use the provider’s built-in key rotation routine, then issue FLUSH BINARY LOGS to ensure the event propagates.
Always verify sufficient disk space and binlog rotation policies before rotating keys. Automate key rotation in maintenance windows and alert on any ER_-prefixed errors in the MySQL error log.
Use Galaxy’s desktop SQL editor to script pre-flight checks, version approved ALTER statements, and share endorsed rotation procedures across the team, reducing human error.
ER_BINLOG_WRITE_FAILED signals generic binlog write issues. ER_KEYRING_MIGRATION_FAILURE appears when copying keys to a new keyring plugin fails. Both errors share root causes such as permissions and disk space and can be fixed with similar steps.
Binary log directory lacks free space, blocking append operations.
mysqld process lacks write permission to binlog files or directory.
log_bin disabled or super_read_only enabled during rotation.
Network storage latency or disconnection interrupts write.
Generic failure writing to the binary log. Fix by checking disk and permissions.
Keyring migration to a new plugin failed. Usually arises during key rotation tasks.
Attempted to use a revoked encryption key. Requires restoring a valid key or recreating encrypted tables.
Primary data is safe, but replicas may lag or fail until the binlog entry is written.
No. Key rotation must be logged so replicas and backups stay consistent.
Only if the underlying disk or permission issue is resolved first. Otherwise the error repeats.
Galaxy allows teams to store vetted key-rotation scripts, run pre-flight checks, and audit execution history, minimizing mistakes.
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