6.3.11. MySQL Enterprise Audit Log Plugin Installing the Audit Log Plugin Audit Log Plugin Security Considerations The Audit Log File Audit Log Plugin Logging Control Audit Log Plugin Options and Variables Audit Log Plugin Restrictions

MySQL Enterprise Audit is a commercial extension. To learn more about commercial products (MySQL Enterprise Edition), see http://www.mysql.com/products/.

In MySQL 5.7, 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, "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, "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, "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, "Audit Log Plugin Logging Control". For descriptions of the parameters used to configure the audit log plugin, see Section, "Audit Log Plugin Options and Variables".

The Performance Schema (see Chapter 20, 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/%';

Changes from Older Audit Log Plugin Versions

Several changes were made to the audit log plugin in MySQL 5.7 for better compatibility with Oracle Audit Vault.

The format of the audit log file has changed:

Example of old <AUDIT_RECORD> format:


Example of new format:


When the audit log plugin rotates the audit log file, it uses a different file name format. For a log file named audit.log, the plugin previously renamed the file to audit.log.TIMESTAMP. The plugin now renames the file to audit.log.TIMESTAMP.xml to indicate that it is an XML file.

If you previously used an older version of the audit log plugin, use this procedure to avoid writing new-format log entries to an existing log file that contains old-format entries:

  1. Stop the server.

  2. Rename the current audit log file manually. This file will contain only old-format log entries.

  3. Update the server and restart it. The audit log plugin will create a new log file, which will contain only new-format log entries.

The API for writing audit plugins has also changed. The mysql_event_general structure has new members to represent client host name and IP address, command class, and external user. For more information, see Section, "Writing Audit Plugins".

Spec-Zone.ru - all specs in one place