Cannot pull printer uptime from SNMP.

[marianogedisman]

(Running Zabbix 6.0 from Docker)

Hello! I am monitoring a HP LaserJet M15w printer with SNMPv3, however I am having issues when trying to create an item for the system uptime using this OID

DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (1871274) 5:11:52.74

However, when setting the up the item as per https://www.zabbix.com/documentation...fig/items/item:

Special processing is used if the following time-related units are used:
unixtime - translated to "yyyy.mm.dd hh:mm:ss". To translate correctly, the received value must be a Numeric (unsigned) type of information.
uptime - translated to "hh:mm:ss" or "N days, hh:mm:ss"
For example, if you receive the value as 881764 (seconds), it will be displayed as "10 days, 04:56:04"
s - translated to "yyy mmm ddd hhh mmm sss ms"; parameter is treated as number of seconds.
For example, if you receive the value as 881764 (seconds), it will be displayed as "10d 4h 56m"

I set the item in the following way:



But I get this value in return:




NOTE: I did notice that the item preprocessing needed to be set to "Change per second", as per the documentation, but this might actually be the issue?

Any help would be greatly appreciated!

[cyber]

Your printer is busy answering your previous request, while you hit it with another one.. polling in 3s interval does not do any good...
As you mention snmpv3, then that one really needs all the times being in sync.

[marianogedisman]

Thank you! I will look into this and let you know how it goes. Thanks again!

[marianogedisman]

What about the preprocessing cyber ? Is it really necessary as stated on the documentation?

[tim.mooney]

The subject for this thread seems to not match the problem you're having, which might be why you haven't received any responses until now. You are collecting system uptime, but at least sometimes it seems like the value you're getting isn't correct.

A few thoughts:

1) every 3 seconds? Is that really necessary? Do you get better results if you change it to every 30s or every 60s?
2) are you using bulk queries?
3) is the printer synchronizing its time to an accurate source?
4) is the printer running the latest firmware? Zabbix may just be getting garbage data occasionally because the printer is providing garbage data.
5) have you tried running an 'snmpget' for that particular oid from the Zabbix server, on the command line, in a loop, to see if you ever see values that decrease, rather than monotonically increasing?

[marianogedisman]

Hello tim.mooney! Thanks for your reply! Sorry for the typo on the Update Interval, I meant to type 30s but missed the zero.

I did run 'snmpget' in a loop and I get the correct uptime increase.
The printer is syncing to an accurate time source.

[cyber]

Your printer is busy answering your previous request, while you hit it with another one.. polling in 3s interval does not do any good...
As you mention snmpv3, then that one really needs all the times being in sync.

[marianogedisman]

Thank you! I will look into this and let you know how it goes. Thanks again!

[marianogedisman]

What about the preprocessing cyber ? Is it really necessary as stated on the documentation?

[marianogedisman]

Also cyber tim.mooney, does zabbix_get work with snmp agent? The documentation page only mentions examples with port 10051; how do I do to pull an item key value from the server cli? Thanks!


EDIT: I just answered my question :P

[marianogedisman]

Alright, so I'm a dork... the very obvious thing I didn't notice is that the printer is sending back the timeticks through snmp (it was right there under my nose):

snmpget -v 3 -l authPriv -c set -a MD5 -A authproto -n Jetdirect -u username -x DES -X privctrl -On 192.168.0.28 DISMAN-EVENT-MIB::sysUpTimeInstance
.1.3.6.1.2.1.1.3.0 = Timeticks: (734008) 2:02:20.08

And Zabbix actually sees it correctly:




Now, the deal would be to convert these timeticks into actual time and date. I'm googling some formulas and heck, that sounds difficult! Anyone care to lend a hand on how to achieve this on Zabbix item config? Much appreciated in advance!


EDIT: Oooohhh, I think I found what I'm looking for! https://www.zabbix.com/forum/zabbix-...cks-conversion


RESOLUTION: Getting read of the "change per second" preprocessing step and simply adding a multiplier by 0.01 worked!

Thanks everyone who chipped in.