Log file rotation is configured in WHM Home » Service Configuration » cPanel Log Rotation Configuration
cPanel Log Rotation Configuration
Files from /usr/local/cpanel/logs selected below will be rotated based upon their size. The rotated files will be compressed and stored in /usr/local/cpanel/logs/archive/. The files are named to include the month in which they are rotated. Consequently, the file names do not relate in any way to the content of the file being rotated. Files are only rotated when they grow larger than the WHM >> Tweak Settings >> Log Rotation Size Threshold or the default of 300MB. The archived log files are left in place indefinitely. Files not chosen here will not ever be rotated by cPanel software.
If you have logs building up in other locations, I would first try and ascertain why they might not be under the cPanel log rotation control, and what is controlling them. I do, however, find it strange that you want to disable
rotation for files that are causing you issues.