ZABBIX server log shows a lot of information in the figure above. The reason is ZABBIX_ The difference between the hostname in agent.conf configuration file and the web interface configuration of ZABBIX is the result

zabbix_ Try not to use hostnameitem = system. Hostname in agent. Conf to get the host name automatically

Try to use the host name to specify a host name, and then the web interface configuration can be the same

Finally, restart the corresponding agent

You can see that the connection has been restored, and there is no can send list of active checks to “IP”: host [host name] not found this log