Network traffic metric no data displayed on dashboard and latest items data.

[mbollo2005]

Hello All
Currently we are using following versions :
- zabbix server version 6.0.15
- zabbix agents version 5.0.32, 5.0.34,6.0.14, 6.0.18,6.0.19
OS : ubuntu 20.04 LTS with mariadb 10.6 instance

The problem is that the network traffic graphs are empty (no data). But when we select the host and test the item property or use zabbix_get command on zabbix server we get the values of the all the network items data.
The template use to collect these networks traffic is the default "Linux by Zabbix agent".

Does anybody already faced this issue ?
Plz help.

[vijayk]

Is Network discovery able to discover the interface device? or Item created manually?

[mbollo2005]

Hi vijayk, thank for your reply
Yes the Network discovery is able to discover the interface device automatically.
I also noticed that the host with no data collected all have IFNAME equal to "ens3", and all hosts were network items are collected the IFNAME is different (ens160 or ens192 ) with the same Zabbix agent version.

[vijayk]

Can you please share the screenshot of value you received and item which discovered?

[mbollo2005]

As you see below the difference on displaying between server1 (no data displayed) and Server2 (data displayed) on network items collection



And for when test some item we can see that the values can be collected successfully

server1




Server 2

[vijayk]

I see it. Can you check with Clear history and trends from item and the execute for latest data?

[mbollo2005]

No change, we have the same behavior.

[vijayk]

Strange, Please check with create manual item in host.

[mbollo2005]

Ok i will check let you know

[cyber]

What is displayed if you click on that red "!" ? There must be an error message.