Optimize very long link between Server, Proxy?

[clarkritchie]

My Zabbix server is in Oregon, USA, and my proxy is in Gulu, Uganda. The proxy is on a mostly stable but sometimes slow connection.

Can anyone suggest what values to tweak to optimize such a long link?

Specifically, it seems like collection is timing out and the whole interfaces table is not being collected. For instance, I'm getting inbound traffic for each interface, but outbound traffic collection is failing.

I see a lot of errors like this "failed: another network error, wait for 15 seconds" in the zabbix proxy log. There is definitely no IP connectivity problem between GULU-tower and the proxy server. 0% packet loss with big packet pings, etc.

Perhaps:

• Turn DataSenderFrequency up, maybe something like 60 seconds
• The Timeout directive seems like it's for in-between the proxy and monitored hosts, not the proxy and the server? Turn this up to 30?

[tchjts1]

I think you are seeing a fairly common issue with the log entries of "failed: another network error, wait for 15 seconds". I had that issue as well on a stable network inside the US.

I pretty much resolved it by increasing the "Timeout=" value on the Zabbix server in zabbix_server.conf
(I also set it the same on my proxies in zabbix_proxy.conf)

By default it is set to 3 seconds. I have mine currently set to 12 seconds. I don't think you should directly jump to 30 seconds though. Start at 10 and increase it by increments of 5 until you see the results you want.

You should also ensure you have the right amount of pollers available.

See this post regarding the graphs and data for Zabbix internal items. It can certainly help you optimize your settings for Zabbix:

https://www.zabbix.com/forum/showthread.php?t=41219

.