/etc/monitrc

check host athome.tld with address athome.tld
      if failed port 80 protocol http for 2 cycles then alert
      if failed port 443 protocol https for 2 cycles then alert
      if failed
         port 443
         with protocol https
         and certificate valid > 30 days
         use ssl options {verify: enable}
      then alert
check host athome.tld with address athome.tld
      if failed port 25 with protocol smtp for 2 cycles then alert
check system localhost
  if cpu > 75% for 2 cycles then alert
  if memory usage > 75% then alert
  if swap usage > 30% then alert
  if disk read > 10 MB/s for 2 cycles then alert
check filesystem rootfs with path /
              if space usage > 90% then alert
check filesystem var with path /var
              if space usage > 90% then alert