ZabbixProxy: cannot send proxy data to server at "10.1.1.1": ZBX_TCP_READ() timed out

[robertitox]

Hi people, I have a Zabbix server with a Zabbix proxy in passive mode.

In the Zabbix server queue menu, I can see items delayed since 3 days, and they are not shown in the graphs.

In the proxy log, I see:

cannot send proxy data to server at "10.1.1.1": ZBX_TCP_READ() timed out

and in the Zabbix server log I can see:

cannot obtain data from proxy "CALLPZBX01 - Calderon": ZBX_TCP_READ() timed out

If I get a host behind the Zabix proxy and I point it directly to the server, the graphs appear.

Can you help me please?

Thanks a lot !!!

[lptarik]

Hello did you able to solve issue ? I am having same problem

[max.]

Hello, how are you?

Can you specify if the proxy is in active or passive mode?

By default, the proxy works in active mode, it means that he will request the configuration to the zabbix server by connecting to port 10051.
Can you check if this traffic its allowed?
Proxy ----> Server (10051 TCP)

Is there any firewall in the middle?
If this is the case you should verify that this traffic is allowed in the firewall.

Also port 10051 should be open in the firewall service of the zabbix server operating system.

Regards

[lptarik]

Hello, how are you?

Can you specify if the proxy is in active or passive mode?

By default, the proxy works in active mode, it means that he will request the configuration to the zabbix server by connecting to port 10051.
Can you check if this traffic its allowed?
Proxy ----> Server (10051 TCP)

Is there any firewall in the middle?
If this is the case you should verify that this traffic is allowed in the firewall.

Also port 10051 should be open in the firewall service of the zabbix server operating system.

Regards

Hello Max, thank you how are you ?

All ports are open 10050 and 10051 , firewall and selinix is disabled in the proxy. Is there any way to debug this isssue and prove that it is related to network.

[max.]

Hello,
Can you check if you can telnet port 10051 of the zabbix server from the zabbix proxy?
Also, firewall and selinux are disabled in the zbx server too? and is there any firewall device between the server and the proxy or the host?

Thank you