Edit file File name : check_load.php Content :#!/usr/local/bin/php <?php $average_load = (double)shell_exec("(uptime | awk '{print $10+0}')"); $cpu_count = (int)shell_exec("nproc"); if ($average_load >= ($cpu_count * 1.5)) { if ($cpu_count < 4 && $average_load < 5) { echo "OK"; exit(0); } echo "CRITICAL: Load $average_load/$cpu_count"; exit(2); } else { echo "OK: Load Average: $average_load/$cpu_count"; exit(0); } Save