nagios check_disk

"Nagios check_disk" refers to a Nagios plugin that is used to monitor the disk usage of a server or system. The plugin checks the amount of free space available on a disk and generates an alert if the space falls below a specified threshold.

To use the "check_disk" plugin, you need to have Nagios installed on your system. Once Nagios is installed, you can download the "check_disk" plugin and place it in the Nagios plugins directory.

The basic syntax for the "check_disk" plugin is as follows:

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check_disk -w <warning> -c <critical> -p <partition>

Here, <warning> and <critical> are the warning and critical thresholds, expressed as a percentage of disk space usage. <partition> is the name of the partition to monitor.

For example, the following command will check the disk usage of the /dev/sda1 partition, and generate a warning if the usage exceeds 80%, and a critical alert if it exceeds 90%:

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check_disk -w 80 -c 90 -p /dev/sda1

You can also specify additional options, such as the minimum and maximum sizes of the partition, the type of filesystem used, and the amount of space reserved for the root user. These options can be used to fine-tune the plugin to your specific needs.

In general, the "check_disk" plugin is a useful tool for monitoring the disk usage of your server or system, and can help you identify potential problems before they cause major issues.