Zabbix Active Agent Autoregistration

Zabbix can auto add hosts to the inventory. This mechanism is useful when hosts can come from any network (public internet) and we are unable to specify a subnet for autodiscovering hosts via SNMP.

It is highly recommended to secure the zabbix server to agent communication using a PSK and TLS. This will prevent rogue agents from registering with the server. See zabbix-agent2.

Configuring Zabbix Autoregistration Action

A zabbix autoregistration action can be used to add the new agent/host to the respective host group, link templates, and notify admins.

Reference: https://www.zabbix.com/documentation/current/en/manual/discovery/auto_registration

1. In Zabbix server, open Configuration, Actions, Autoregistration actions menu and click Create Action button on the top right.
2. In Action Conditions, add filters for Host metadata to any of the strings from the HostMetadata value from the zabbix agent config. We can use this to segregate host based on OS (Linux, Windows, etc), environment (prod, test, etc) Linux, or location.
3. In the Actions Operations tab, select the list of actions you need to perform on the matched hosts.

References

1. Zabbix Agent setup zabbix-agent2
2. Zabbix server setup in docker zabbix-docker