PostgreSQL 10 High Performance - Third Edition

Basic PostgreSQL log setup

This is what the default settings in the postgresql.conf setting look like for the main logging setup parameters:

log_destination = 'stderr' 
logging_collector = off 
log_line_prefix = '' 
log_directory = 'pg_log' 
log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' 

It's important to know what all these lines mean before changing them:

• log_destination: Write server log messages to the standard error output of the process starting the server. If you started the server manually, these might appear right on your console. If you sent the server output to another spot, either using the pg_ctl -l option or by using command-line redirection, they'll go to the file you specified there instead.
• logging_collector: Off means don't ...