Solution to get cronolog working...

[Igor Sysoev]

On Thu, Mar 15, 2007 at 01:43:15PM -0700, Philip Hallstrom wrote:

> I recently setup nginx and had to get cronolog working.  I noticed someone 
> else asked about this a little while ago and I figured I'd write up what I 
> did in case someone else wants the same thing.
> 
> In a nutshell, I used fifo's.  More here:
> 
> http://blog.pjkh.com/articles/2007/03/15/nginx-and-cronolog
> 
> Hope folks find it useful.

You may decrease context switches number using:

-(cat /usr/local/nginx/logs/access.log | /usr/local/sbin/cronolog ...
+/usr/local/sbin/cronolog ... <

Anyway I do not think that using cronolog is useful.
You may avoid a lot of unnecessary context switches, data copies, and
possible nginx worker processes blocking using simple script run by cron
every hour:

--------------
TIME=`date +%Y/%m/%d/%H`  # FreeBSD date command, other OSes may use
                          # different switches

mv /var/log/nginx/access.log /var/log/nginx/${TIME}/access.log
mv /var/log/nginx/error.log /var/log/nginx/${TIME}/error.log

kill -USR1 `cat /var/run/nginx.pid`
--------------

It's simplest.


-- 
Igor Sysoev
http://sysoev.ru/en/