> For the complete documentation index, see [llms.txt](https://doc.i4e.com.bd/networking/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.i4e.com.bd/networking/doc/check-health.md).

# Notify about health state

[◀ Go back to main README](/networking/master.md)

## Description

This script is run from scheduler periodically, sending notification on health related events:

* voltage jumps up or down more than configured threshold
* power supply failed or recovered
* temperature is above or below threshold

Note that bad initial state will not trigger an event.

Only sensors available in hardware can be checked. See what your hardware supports:

```
/ system health print;
```

## Requirements and installation

Just install the script and create a scheduler:

```
$ScriptInstallUpdate check-health;
/ system scheduler add interval=1m name=check-health on-event="/ system script run check-health;" start-time=startup;
```

## Configuration

The configuration goes to `global-config-overlay`, These are the parameters:

* `CheckHealthTemperature`: an array specifying temperature thresholds for sensors
* `CheckHealthVoltagePercent`: percentage value to trigger voltage jumps

Also notification settings are required for e-mail and telegram.

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