Data Updates troubleshooting

[Siyanda]

Hi

Can anyone please help me with the following

I have installed zabbix_server, zabbix_agentd and the web application on a Linux server.
I started the zabbix_server and the zabbix_agentd and then opened the web interface for monitoring the server. I have noticed that the the data is displayed for example in a graph but it will stop updating the graph with data after about 30min and then I have to restart zabbix_server for it to give me letest data from the time I restart the zabbix_server and again it will only update data for about 20min sometimes, the time that lasts for updates is no the same each time I restart the zabbix_server.

[t2y]

First of all, it would be better to write zabbix version since it's easy to conjecture.

However, in this case, did you check the item's status "Active"? Or, did you check Update Interval?
If you cannot find something wrong, you can check log file(in almost, /var/log/zabbix/{zabbix_server.log,zabbix-agentd.log}).

[Siyanda]

I'm using zabbix 1.6.1
The status of the machine is monitored and available, the update interval is 60 seconds.

The zabbix_server.log has mostly these errors:

Get value from agent failed. Error: Cannot connect to [10.204.20.142:10050] [Interrupted system call]
20629:20090407:145503 Get value from agent failed. Error: Cannot connect to [10.211.5.73:10050] [Connection refused]
20629:20090407:145503 Get value from agent failed. Error: Cannot connect to [10.211.5.76:10050] [Connection refused]
20633:20090407:145509 Timeout while connecting to [10.204.20.142:1691]
20629:20090407:145509 Timeout while connecting to [10.211.5.77:161]
20633:20090407:145512 Timeout while answering request

But I did not find anything about the machine that I'm monitoring in the log file.

[t2y]

hmm, I have no idea,,,

How about do you upgrade from 1.6.1 to 1.6.4?
Because, many bugs are fixed/improved in latest version.
# http://www.zabbix.com/download.php

Or, could you change the status "Disabled" about unneeded items if there are many "Active" items?
It might be caused by overload on your server.

[tighep]

Is iptables running on the server? I ask because it sure seems like you're having failures on multiple ports.

Can you telnet over these ports that are failing and get a connection?

[Siyanda]

Hi

I am using two machine to observe the responses from zabbix while it is monitoring and on these machines port 10050 is open and listening.
One of these machines is the server itself which is using port 10051 for zabbix and this port is open for traffic.