3 Custom alertscripts

Overview

If you are not satisfied with existing media types for sending alerts there is an alternative way to do that. You can create a script that will handle the notification your way.

Alert scripts are executed on Zabbix server. These scripts are located in the directory defined in the server configuration file AlertScriptsPath variable.

Here is an example alert script:

#!/bin/bash
       
       to=$1
       subject=$2
       body=$3
       
       cat <<EOF | mail -s "$subject" "$to"
       $body
       EOF

Starting from version 3.4 Zabbix checks for the exit code of the executed commands and scripts. Any exit code which is different from 0 is considered as a command execution error. In such case Zabbix will try to repeat failed execution.

Environment variables are not preserved or created for the script, so they should be handled explicitly.

Configuration

To configure custom alertscripts as the media type:

Go to Administration → Media types
Click on Create media type

The Media type tab contains general media type attributes:

All mandatory input fields are marked with a red asterisk.

The following parameters are specific for the script media type:

Parameter	Description
Script name	Enter the name of the script.
Script parameters	Add command-line parameters to the script. {ALERT.SENDTO}, {ALERT.SUBJECT} and {ALERT.MESSAGE} macros are supported in script parameters. Customizing script parameters is supported since Zabbix 3.0.

See common media type parameters for details on how to configure alert processing options.

As parallel processing of media types is implemented since Zabbix 3.4.0, it is important to note that with more than one script media type configured, these scripts may be processed in parallel by alerter processes. The total number of alerter processes is limited by the StartAlerters parameter.

User media

To assign custom alertscripts to the user:

Go to Administration → Users
Open the user properties form
In Media tab, click on Add

User media attributes:

Parameter	Description
Type	Select the custom alertscripts media type.
Send to	Specify the recipient to receive the alerts.
When active	You can limit the time when alertscripts are executed, for example, the working days only (1-5,09:00-18:00). See the Time period specification page for description of the format.
Use if severity	Mark the checkboxes of trigger severities that you want to activate the alertscript for. Note that the default severity ('Not classified') must be checked if you want to receive notifications for non-trigger events. After saving, the selected trigger severities will be displayed in the corresponding severity colours while unselected ones will be greyed out.
Status	Status of the user media. Enabled - is in use. Disabled - is not being used.

Documentation

3 Custom alertscripts

Overview

Configuration

User media