Overview

    • Click on Create rule (or on the rule name to edit an existing one)

    • Edit the discovery rule attributes

    Rule attributes

    All mandatory input fields are marked with a red asterisk.

    A real life scenario

    In this example we would like to set up network discovery for the local network having an IP range of 192.168.1.1-192.168.1.254.

    In our scenario we want to:

    • discover those hosts that have Zabbix agent running

    • run discovery every 10 minutes

    • add a host to monitoring if the host uptime is more than 1 hour

    • remove hosts if the host downtime is more than 24 hours

    • use Template OS Linux for Linux hosts

    • use Template OS Windows for Windows hosts

    Step 1

    Defining a network discovery rule for our IP range.

    1 Configuring a network discovery rule - 图3

    Zabbix will try to discover hosts in the IP range of 192.168.1.1-192.168.1.254 by connecting to Zabbix agents and getting the value from the system.uname key. The value received from the agent can be used to name the hosts and also to apply different actions for different operating systems. For example, link Windows servers to Template OS Windows, Linux servers to Template OS Linux.

    The rule will be executed every 10 minutes.

    When this rule is added, Zabbix will automatically start the discovery and generating discovery-based events for further processing.

    Step 2

    Defining an action for adding the discovered Linux servers to the respective group/template.

    The action will be activated if:

    • the value of system.uname (the Zabbix agent key we used in rule definition) contains “Linux”

    • Uptime is 1 hour (3600 seconds) or more

    1 Configuring a network discovery rule - 图5

    The action will execute the following operations:

    • add the discovered host to the “Linux servers” group (and also add host if it wasn’t added previously)

    • link host to the “Template OS Linux” template. Zabbix will automatically start monitoring the host using items and triggers from “Template OS Linux”.

    Step 3

    Defining an action for adding the discovered Windows servers to the respective group/template.

    Step 4

    Defining an action for removing lost servers.

    A server will be removed if “Zabbix agent” service is ‘down’ for more than 24 hours (86400 seconds).