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Monit is a free, open-source process supervision tool for Unix and Linux. Monit can restart a process automatically if process dies or monitor process characteristics, such as memory or cpu cycles and alert or execute and action. Monit only support alert messages by email[1]. Monit support monitoring cpu, memory, swap usage and loadavg among others.


set daemon 120 By default configured to check services every 120 seconds
Review examples:
  • Logs: /var/log/monit.log
  • Command: monit status
  • Restart Monit service: systemctl restart monit.service && systemctl status monit



#  check system $HOST
#    if loadavg (1min) per core > 2 for 5 cycles then alert
#    if loadavg (5min) per core > 1.5 for 10 cycles then alert
#    if cpu usage > 95% for 10 cycles then alert
#    if memory usage > 75% then alert
#    if swap usage > 25% then alert

Related commands[edit]

See also[edit]

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