Greg Smith wrote:
Let's say you're using logging_collector and you've put some %-escapes
into log_filename for daily log rotation. Perhaps it's daily rotation
with this pattern:
log_filename = 'postgresql-%Y-%m-%d.log'
Is there any good way to ask the server what log file name it's
currently writing to? I was trying to write something that does a
"tail" on the current log, and was hoping there was a simple way to
figure out which file that goes against. Looking for the latest
timestamp or running strftime would both work I guess, those just seemed
a little heavy (was hoping for an "alias"-sized answer) to figure out
something that the server certainly knows.
As long as you're using a reasonable[1] format for the date, you could
simply list postgresql-*.log and grab the last filename.
[1] eg. Year-Month-day, which will always be ordered properly.
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