I had small system in my VPS, which only had 10GB disk usage. Now as I check /var/log
directory used 6GB to only write log!!! which it sound very crazy to me.
I have tried cleanup the log following this suggestion, but still not much help. Is there any reason why the log take so much disk usage? How to fix it? I don't want to have log file that big.
/var/log
is a folder, not one log file. Inside that folder, there are many log files. You need to go into that folder and specifically find the log files that're eating up the space, and remove them or trim them, and delete old logfiles that logrotate left behind.