zabbix_get returning blank instead of a value

[Goomie]

Hi,

I have a few userparameters that return values fine via zabbix_get and are being monitored without issues.
However when trying to return a value to do with smartctl I get blank when returning zabbix_get on my server. The zabbix_agentd -t on the client works perfectly.

Is there any reason why a userparameter would work on the client but not my server when I have other userparameters that work fine.

Script
smartctl -a /dev/sda | egrep -i "Reallocated_Sector_Ct" | awk '{ print $10 }'

Zabbix_agentd.conf
UserParameter=dev.sda, /usr/bin/sda.sh

Works on client
zabbix_agentd -t dev.sda

Returns blank on server
zabbix_get -s [IP ADDRESS] -p 10050 -k dev.sda

Any pointers appreciated.

[aib]

permissions.

when you test the parameters on the client - zabbix_agentd works under root/administrator account

when you request the same parameter from zabbix server using zabbix_get - zabbix_agent on client works under Zabbix credentials.

[Goomie]

Thanks Aib,

I did suspect this but thought it was strange that all my other scripts work fine, just that the smartctl ones have issues. But I guess it's a feature for smartctl to need user privileges set

I've added 'zabbix ALL=NOPASSWD: ALL' to my sudeors file, which hasn't made a difference.

Do you know if I have to restart the server for the sudeors change to take affect? It's just it's difficult to find time for the server restart, it's heavily used.

Many thanks

[aib]

Not only Zabbix has a problem with smartctl.
Nagios/Cacti/etc also faced with the same trouble because: "smartctl requires root permissions"

You can play around sudo, or you can give a permission for file /dev/cciss/c0d0: as it was described here

[Goomie]

Great thanks for the pointers Aleksey.