how to change the period of /log/cacti.log

[yclwm3]

hello,everyone,
i want to change the period of /log/cacti.log longer,now the default period is only 7days,
where i should go to change the code ?

thanks!

[sbotnick]

Guessing by the file path you have a Linux box. It's most likely handled by logrotate. Mine is here: /etc/logrotate.d/cacti