Today when doing Zabbix, appeared "Zabbix_get [2520]: Check access Restrictions in Zabbix agent configuration", it feels as if the authority never let access, So the server side and the client firewall, SELinux checked all over, the results are not open, so check the client's configuration file, found that the client does not have an intranet address, and the configuration file is the intranet address, and then resolutely change the intranet address to the public address, restart the configuration file, the results of the server to obtain the value.
Note that the IP address of the-s behind is the same as the IP address of the server on the agent side
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Zabbix_get [2520]: Check access Restrictions in Zabbix agent configuration