Gaps on Internet Graphs from Proxy

[paulo.soares]

Hello!

I've experienced "gaps" on the web monitoring of some pages from a proxy. Not only on web monitoring, but the gaps appear on the graph "Zabbix data gathering process busy %" of that proxy. You can see the gaps on the image below.

PS.: We are migrating to Zabbix 2.2.9, but the same problem ocurs on that new instalation.

Any help is apreciated

[IMG]s1.postimg.org/8nfazbujj/graph_gaps.png[/IMG]

[Parasin]

I sometimes get gaps in my graphs as well. Are any of your items switching to a "Not Supported" state??


What does your Zabbix Server log and your Zabbix Proxy log show?

[paulo.soares]

Response

Hello Parasin!

I don't saw any item switching to "Not supported". I removed the templates from the proxy, so, that proxy only monitor 3 web scenarios. But on the zabbix-proxy logs really have something strange, many lines like this:

28128:20150511:130203.278 cannot send list of active checks to [<SERVERIP>]: host [<HOSTNAME>] not found

Moreover, the proxy ip appears on this lines too. I can ping the ip addresses that appear on the log...

Another thing is in this same log appears some lines like these:
28126:20150511:130203.790 Received configuration data from server. Datalen 5646
28126:20150511:130203.791 failed to update local proxy configuration copy: invalid field name "interface.bulk"

And on zabbix-agentd log appears many lines like that:
1782:20150511:132150.280 no active checks on server [<PROXYIP>:10051]: host [<PROXYHOSTNAME>] not found

Any suggestion?

[Parasin]

I would double-check your zabbix_proxy.conf and your zabbix_agentd.conf files to make sure that the Hostname is set correctly.

If the Hostname is not exactly the same (is case-sensitive), the proxy/server won't be able to connect or get data to/from the agent.


If you are using an active agent, make sure that the ServerActive field is set to the IP of you Zabbix Proxy IP.

Same goes for an agent in passive mode as well.

[paulo.soares]

Hello again,

The Hostname parameter is like that:
On zabbix_proxy.conf = vmrhzbxproxy01
On zabbix_agentd.conf = vmrhzbxproxy01
On Zabbix server web interface = Proxy 1 Regiao

The problem is, if i change the Hostname on web interface, it stops to receive info, and all graphs go down.

On zabbix_agentd.conf, the parameter ServerActive points to proxy IP. But on zabbix_proxy.conf the ProxyMode is 1(passive mode). Is that right?

On the proxy log, i see many lines like that:
1782:20150512:082919.899 no active checks on server [<PROXYIP>:10051]: host [<PROXYHOSTNAME>] not found

So, is the proxy configured as passive, but sending active checks?

[paulo.soares]

Resolved!

When talking with a colleague, i remembered that we are migrating from Zabbix v2.2 to v2.4 and that two zabbix-servers were using that same proxy, and that proxy could be supercharged with this situation.

So, after delete the proxy from the new instance of Zabbix (v2.4) that we are using, the monitoring graphs become continuous again.

I hope this help someone.