check_temperature.rb

check_temperature.rb

#!/usr/bin/env ruby
require 'date'
warn,crit=30.0,35.0
while a = ARGV.shift
  if a == "-w"
    warn = ARGV.shift.to_f
  elsif a == "-c"
    crit = ARGV.shift.to_f
  end
end

temp = `tail -1 /var/log/temperature.log | awk '{ print $2 }'`.strip.to_f
reading_time_stamp = `tail -1 /var/log/temperature.log | awk '{ print $1 }'`.strip.gsub(/[\[\]]/, '')
reading_time_stamp = DateTime.strptime(reading_time_stamp, "%Y:%m:%d:%H:%M:%S")
age_of_reading = (DateTime.now - reading_time_stamp).to_f * 24 * 60 # in minutes
puts "#{temp}|banner-temp=#{temp}"

# nagios states:  ok, warning, critical, unknown (0-3)
exit 1 if temp > warn || age_of_reading > 5
exit 2 if temp > crit || age_of_reading > 10