As of MySQL 5.6.10, MySQL Enterprise Edition includes MySQL Enterprise Audit, implemented using a server plugin named audit_log. MySQL Enterprise Audit uses the open MySQL Audit API to enable standard, policy-based monitoring and logging of connection and query activity executed on specific MySQL servers. Designed to meet the Oracle audit specification, MySQL Enterprise Audit provides an out of box, easy to use auditing and compliance solution for applications that are governed by both internal and external regulatory guidelines.

When installed, the audit plugin enables MySQL Server to produce a log file containing an audit record of server activity. The log contents include when clients connect and disconnect, and what actions they perform while connected, such as which databases and tables they access.

After you install the plugin (see Section 6.3.11.1, "Installing the Audit Log Plugin"), it writes an audit log file. By default, the file is named audit.log in the server data directory. To change the name of the file, set the audit_log_file system variable at server startup.

Audit log file contents are not encrypted. See Section 6.3.11.2, "Audit Log Plugin Security Considerations".

The audit log file is written in XML format, with auditable events encoded as <AUDIT_RECORD> elements. For details on file format and contents, see Section 6.3.11.3, "The Audit Log File".

To control what information audit_log writes to its log file, set the audit_log_policy system variable. By default, this variable is set to ALL (write all auditable events), but also permits values of LOGINS or QUERIES to log only login or query events, or NONE to disable logging.

For more information about controlling how logging occurs, see Section 6.3.11.4, "Audit Log Plugin Logging Control". For descriptions of the parameters used to configure the audit log plugin, see Section 6.3.11.5, "Audit Log Plugin Options and Variables".

The Performance Schema (see Chapter 21, MySQL Performance Schema) has instrumentation for the audit log plugin. To identify the relevant instruments, use this query:

SELECT NAME FROM performance_schema.setup_instrumentsWHERE NAME LIKE '%/alog/%';