[ADMIN] Definitive logrotate solution?

[Wells Oliver]

Might anyone share theirs? My log_rotation is set to 'stderr', and the log
files are being put into /var/log/postgresql.

My main concern is the postrotate action-- want to make sure the log is
properly rotated, unneeded older logs removed, and postgres... properly
bounced?

Thanks for any tips.

[Tom Lane]

Post by Wells Oliver
Might anyone share theirs? My log_rotation is set to 'stderr', and the log
files are being put into /var/log/postgresql.
My main concern is the postrotate action-- want to make sure the log is
properly rotated, unneeded older logs removed, and postgres... properly
bounced?

Use the logging collector with its built-in rotation parameters, and you
don't need anything else.

If you insist on an external solution, there's basically no way except
to shut down and restart postgres after any rotation, because there are
going to be N processes all connected to the same stderr file descriptor.

regards, tom lane

[Wells Oliver]

How do you ensure you're not keeping logs from 35+ days ago, or whatever?
Just a find -mtime +10 -exec rm {}\; kind of thing?

Post by Tom Lane

Post by Wells Oliver
Might anyone share theirs? My log_rotation is set to 'stderr', and the

log

Post by Wells Oliver
files are being put into /var/log/postgresql.
My main concern is the postrotate action-- want to make sure the log is
properly rotated, unneeded older logs removed, and postgres... properly
bounced?

Use the logging collector with its built-in rotation parameters, and you
don't need anything else.
If you insist on an external solution, there's basically no way except
to shut down and restart postgres after any rotation, because there are
going to be N processes all connected to the same stderr file descriptor.
regards, tom lane

[Tom Lane]

Post by Wells Oliver
How do you ensure you're not keeping logs from 35+ days ago, or whatever?
Just a find -mtime +10 -exec rm {}\; kind of thing?

Well, that depends on what you want to do. I like to choose the log file
names so that they'll automatically be reused once a week or month.

regards, tom lane