Postgresql log rotation In postgresql, I'm using the following configuration to maintain my weekly logs:

log_truncate_on_rotation = on
log_rotation_age = 1d
log_filename = 'postgresql-%a.log'
log_rotation_size = 0  #just rotate daily


This creates a log file with a name like 'postgresql-Mon.log' and when rotation occurs, it overrides the old file with the same name. This way I'm able to maintain a weekly log.

I now want to move this configuration to keeping the log for just one day, instead of 7 days. How do you suggest I tweak the config given above to achieve this? Do I only need to change the log_filename to postgresql.log? Please advise. Thanks in advance.
Yes, as (like you described) rotation replaces the file with the same name, you can find whichever name you like, without any daily changing bits.