Agent through proxy problem

[bubi92]

Hey community!
I have a huge problem. I installed a new Zabbix proxy server. Zabbix proxy is communicating with the server. I would like to install and setup an agent to monitor itself the proxy. The agent installed, running, but im getting the following error: no active cheks on server [zabbixserver.ip] : host [definied hostname of proxyserver] not found
In the frontend, i added a host, with the exactly same name what i wrote in zabbix_agentd.conf file. So this cant cause the problem. Any advice what can be?

[Atsushi]

Did you restart the Zabbix agent after changing the zabbix_agentd.conf file?

[bubi92]

yes, of course. i did restart on everything. agent, proxy, server, my pacemaker.. but its still not working

[solomonaom]

when you set zabbix proxy you need to check on zabbix server which mode you set to zb proxy . The zabbix agent need to config IP server active to your new proxy server

[bubi92]

you mean on web frontend? on webfrontend proxy added as active, and in the zabbix_proxy.conf its in active mode too.

only the proxy server? the config files said "server AND proxy"

[solomonaom]

if your active mode match between zb server & zb proxy you can try check zb agent in a host <zabbix_agent.conf> is point to your zb _proxy

[bubi92]

If i modify the agentd.conf serveractive to only proxy address the "host not found" message is gone. BUT in the frontend, de host is still red.

[bubi92]

i checked another working host's agentd.log file. its contain "no active checks on server xx : host xxx not found" but, in spite of on the web frontend this host are working. so maybe this error message is a dead end.

other starting point to investigate the problem, could be the frontend message: get value from agent failed: connection closed during read

[solomonaom]

no It will be not correct the message is correct no active check because in server active IP is not working properly

[bubi92]

I attachted two server agentlogs. On the first as you can see there are a lot of no active checks message, but below on the frontend ZBX sign is green, the check is working.

On the second picture there are the same messages, but on frontend ZBX sign is red.

[solomonaom]

if you see no active check in a message mean your zb client cannot connect to zb server with default port for active check need 10051 TCP to connect from client to zb server or you change default port you can specify it in zb.config and restart zb agent

::The green ZBX mean passive not active check

[bubi92]

its okay. i checked it and you were right. on 2 host the host name was different from the config file. but on the other host which is monitored by proxy the hostname is exactly the same in config and on the frontend, even so in the log still host not found error message.

if green zbx mean passive, what should i see if active check?

client can connect to server on 10051 port, but if i add host on the frontend with 10051 its not working, but with 10050 its ok. why?