New weekly free plugin for checking memory usage in unix-like systems: check_unix_mem_usage.

The fact to known the system memory usage plays a crucial role to prevent shortages in a system fundamental resource. Key benefits are, comparing this plugin with previous related plugins:

• It can check not only the overall memory consumption, but also the application memory consumption, the cache consumption and the swap consumption. Nowadays operating systems tend to use the max available memory over disk cache, for this reason, even when the system needs few resources, the memory usage percentages are close to 100%. This is the reason why we consider the total memory consumption a poor indicator.
• It allows checkings based on percentage of total, Bytes, Kibibytes, Mebibytes, Gibibytes and Tebibytes. Units based on IEEE 1541 standard.
• It support checks based on thresholds or ranges.

Plugin is Nagios 3.x (ePN) compatible. Attached README file includes plugin related information. It can be downloaded from our website or from Nagios Exchange.