Linux

Check RAM usage as a percentage

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Description:

Queries via snmp and returns the memory usage as a percentage.

Current Version

1.0

Last Release Date

2013-02-22

Compatible With

  • Nagios 2.x
  • Nagios 3.x
  • Nagios XI

Owner

Lou Grossi

License

MIT

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Project Files
FileDescription
check_ram_usage.php

add this file to your plugins directory and write a command for it.

Project Notes
Queries via snmp and returns the memory usage as a percentage. usage syntax: # php check_ram_usage.php hostname port community warning critical example: # php check_ram_usage.php 10.123.2.13 161 readcom 85 95 where: hostname: valid address to your machine port: snmp port community: snmp read community warning: warning level (expressed as % without the % symbol) critical: critical level (expressed as % without the % symbol)
Reviews (1) Add a Review
RAM free not used
by chrisman, January 31, 2015

Hi maybe I'm wrong but your script returns not the RAM used it returns the RAM free. Your script queries two values: $total_ram with OID .1.3.6.1.4.1.2021.4.5.0 $total_ram_free with OID .1.3.6.1.4.1.2021.4.6.0 but OID .1.3.6.1.4.1.2021.4.6.0 is not the used RAM on my linux boxes it's the memAvailReal.0 I changed your script a bit and turned "$total_ram_used" to "$total_ram_free" and added a line before "$percentage_ram_used": $total_ram_used = $total_ram - $total_ram_free; cheers chris


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