What is PostgreSQL audit logging and how can I implement it?

What is PostgreSQL audit logging and how can I implement it?

PostgreSQL audit logging is a feature that allows you to track database activities, such as changes to data and schema. You can implement it using the pgaudit extension or by configuring the log_statement and log_directory settings in your PostgreSQL configuration.

What are the benefits of using audit logging?

Audit logging helps in tracking changes for compliance, troubleshooting issues, and enhancing security by monitoring unauthorized access.

Can you show me an example of how to set it up?

Sure! First, install the pgaudit extension. Then, add pgaudit to the shared_preload_libraries in your postgresql.conf file. Finally, configure the logging settings to capture the desired events.

Are there any performance impacts I should be aware of?

Yes, enabling detailed audit logging can impact performance, especially on high-transaction databases. It's important to balance the level of detail with performance needs.