Many server / VPS have very small /tmp partition like 500 MB. It is recommended to have /tmp partition of minimum 2GB.
If you server is facing issue of /tmp partition filling-up quickly, here is how you can increase its size.
This tutorials explains how easily you can increase size of /tmp partition on a cPanel server / VPS.
Login as root via SSH to your server, and follow below steps / commands.
Step 1: Stop services
Before you start resizing, you should stop cpanel, apache and mysql. Run following command to stop these services
/etc/init.d/cpanel stop /etc/init.d/httpd stop /etc/init.d/mysql stop
Step 2: Umount /tmp and /var/tmp
umount -l /tmp umount -l /var/tmp
Step 3: edit /scripts/securetmp
And change value of my $tmpdsksize For making size of /tmp partition to 2GB change its value to 2048000. After making change save this file. It should be like this:
$tmpdsksize = 2048000
Step 4:Run these commands to resize /tmp partition
rm -fv /usr/tmpDSK /scripts/securetmp
Step 5: Start services
/etc/init.d/httpd start /etc/init.d/mysql start /etc/init.d/cpanel start
Done!!! The /tmp partition on your cPanel server is now of 2GB