Zabbix proxy unusual behaviour

[gdvilela]

Greetings,

For the past few hours I've been struggling with a simple thing: update our agents to instead of pointing to proxy A (192.168.100.50) to simply point to proxy B (192.168.100.51). For whatever reason that hasn't been so simple.
We checked the logs file in our agent and we keep getting this message over and over again:

 47692:20190716:114643.349 failed to accept an incoming connection: connection from "192.168.100.50" rejected, allowed hosts: "192.168.100.51"

I'm currently trying to figure out why this is happening but the "solution", at least for now, is to add the IP address of proxy A (which will no longer receive data from this agent) and from proxy B so our Server parameter looks like this:

Server=192.168.100.50,192.168.100.51

I'm not so sure if it's a good idea to leave both IP addresses on the Server parameter but so far that has been the solution, otherwise the agent wouldn't be monitored by Zabbix.

Any ideas?

P.S.: we've already restarted the agent after updating the config file.

[gdvilela]

Greetings, everyone!

After trying a few different approaches (change port, force cache reload, set some parameters) I noticed that if I copied the config file, updated it, renamed the old config file to something like "zabbix_agentd_old" and moved the new config file to the folder (and restarted the service), the communication would continue and the error message would no longer be shown.

It does seem the situation has been solved but I'll keep an eye on it to see if it has been completely solved.