Quick question about using kill -USR1 to recreate access.log
francis at daoine.org
Mon May 19 19:36:51 UTC 2014
On Mon, May 19, 2014 at 03:06:06PM -0400, samingrassia wrote:
> mv $NGINX_ACCESS_LOG $ACCESS_LOG_DROPBOX/$LOG_FILENAME
> kill -USR1 `cat $NGINX_PID`
> My questions is during time between the mv and the kill, is there any log
> writes that are being discarded or are they being stacked in memory and
> dumped into the new access.log after it is recreated?
What happens when you do
mv $NGINX_ACCESS_LOG $ACCESS_LOG_DROPBOX/$LOG_FILENAME
and then issue a http request of your nginx server, before the kill?
Do you see the log line go into $NGINX_ACCESS_LOG; onto the end of
$ACCESS_LOG_DROPBOX/$LOG_FILENAME; or disappear without being written
I'd expect the first option not to happen; the second option to happen
if the "mv" is a "rename"; and the third option to happen if the "mv"
is a "copy and delete". So make sure that your "mv" is a "rename",
and you'll be fine.
Actually, I'd expect the first option to happen if you are using variables
in your log file name, according to its documentation.
Francis Daly francis at daoine.org
More information about the nginx