The Memory plugin monitors how much memory (either swap or RAM) your server is using (either as a percentage or amount). This can be useful for sending out alerts when your server is using too much memory.

To add a Memory resource type to your server first see Add FortiMonitor Agent checks if you have not already.

Control Panel Configuration

First, select the Linux category from the catalog, and scroll to the Memory section.

There are a number of metrics to choose from.

The metric options will let you choose between Swap and RAM, as well as letting you choose between whether the check returns a percentage or a total used figure. The specific number that this resource returns is defined by the above options, please take this into account if you choose to change your alert thresholds for this resource.

You can monitor multiple Memory Agent resources on one server if you would like, but that is not often recommended as one should be plenty.

If you would like to inspect the Memory plugin in more detail you can find the python script for it in /usr/lib/fm-agent/plugins/memory_usage.py.