Operating System Monitoring

Most OS-related metrics (file system, CPU, network) are provided by “platform subagent”, which is loaded automatically by the agent on the startup.

List of available subagents:

• linux

• aix

• hpux

• winnt (all Windows flavors)

• sunos (Solaris)

• darwin (MacOS)

• freebsd

• netbsd

• openbsd

In this section we cover only most common metrics. Detailed list available bellow.

Example

In examples will be shown only DCI configuration with threshold. Generated event processing options can be found in Event processing chapter.

Process monitoring

In this example monitoring of running “mysqld” process will be configured and one threshold will be added: when process count is less then 1 (process is not running).

Create DCI for Process.Count(*) metric to monitor “mysqld” process count.

Create threshold. It will be triggered when process count is not equal to 1(process is not running). As prerequisite it was created 2 events.

Events

Threshold 1

As in message of error is used Instance parameter, it should be set in Threshold window.

Disk free space monitoring

In this example monitoring of free space in percents for / disk will be configured and two thresholds will be added: when disk space less then 15% and less then 7%.

Create DCI for FileSystem.FreePerc(*) metric to monitor space on /.

Create 2 thresholds. One will be triggered when free space is less than 15% and other one when free space is less than 7%. Before threshold creation was created 3 events:

Events

Threshold 1

Threshold 2

As in message of error is used Instance parameter, it should be set in Threshold window.

Both

CPU usage

This example will show how to configure monitoring of CPU usage and create event when CPU usage is more than 90% for more than 5 minutes.

Create DCI for System.CPU.LoadAvg metric.

Create threshold that will create event in case if last 5 values are more than 90 (last 5 minutes CPU usage is more than 90%).

Events

Threshold