Starting with Zabbix 2.0, it is possible to instruct the active Zabbix agent for auto-registration. This way, new hosts can be added for monitoring without configuring them manually on the server. The auto-registration of an unknown host can be triggered when an active agent asks for checks. This feature can be precious to implement an automatic monitoring of new cloud nodes. When a new node in the cloud comes up, Zabbix will automatically start collecting performance metrics and checking the availability of the host.
The active agent auto-registration can also monitor hosts that have passive checks. When the active agent asks for checks, provide them to the Zabbix server's ListenIP and ListenPort configuration parameters defined in the agent configuration file.
Note
Please note that if you have multiple IP addresses specified, only the first one will be sent to the server.
On the server side, Zabbix uses the IP and port that has been received by the agent...