snmp always gets network error for a particulair OID

[Toonces]

I am trying to create an snmp monitoring item in zabbix to pull data for a specific OID that so we can monitor sessions across a weblogic application. We have been monitoring this using Zenoss for a few years with this setup and I know the complete OID I need to get data from.

I created the item in Zabbix but always get "SNMP agent item "luminis_total_sessions" on host "XXXXX" failed: first network error, wait for 15 seconds" followed by another error 15 seconds later and the data is never retrieved. This occurs over and over.


If I run snmpwalk or snmpget on the zabbix server where it is trying to get the data, it works for me every time. I just can't get zabbix to get the data.

snmpget -r 0 -xxxxx -v2c -On IP.ADDRESS 1.3.6.1.4.1.2021.8.1.101.8
.1.3.6.1.4.1.2021.8.1.101.8 = STRING: 318

snmpwalk -r 0 -xxxxx -v2c -On IP.ADDRESS 1.3.6.1.4.1.2021.8.1.101.8
.1.3.6.1.4.1.2021.8.1.101.8 = STRING: 390


Any suggestions? by all rights it looks like I should be able to pull the data.

Thanks!

[aib]

We need some additional information.
1) Screenshot of Host description
2) Screenshot of Item description
3) The value of Timeout= from zabbix_server.conf
4) Piece of zabbix_server.log with the error message.

Just from top of my head you can:
- wrongly describe Host -> SNMP interface
- forgot to write macros {$SNMP_COMMUNITY}
- incorrectly use SNMP OID
- incorrectly setup key settings for OID
- use default Timeout=3 instead of more usefull Timeout=15 or even =30
- etc.

Give me more data - I will give you more correct answer

[Toonces]

We need some additional information.
1) Screenshot of Host description
2) Screenshot of Item description
3) The value of Timeout= from zabbix_server.conf
4) Piece of zabbix_server.log with the error message.

Just from top of my head you can:
- wrongly describe Host -> SNMP interface
- forgot to write macros {$SNMP_COMMUNITY}
- incorrectly use SNMP OID
- incorrectly setup key settings for OID
- use default Timeout=3 instead of more usefull Timeout=15 or even =30
- etc.

Give me more data - I will give you more correct answer

Thank You for the quick reply. I checked the easiest thing first and just changed the Timeout value from 5 to 30. I will gather other data as it gets it with the new Timeout value and report back.

Best Regards,

Erik

[Toonces]

Timeout = 30

Log:
2338:20140410:110007.541 SNMP agent item "luminis_total_sessions" on host "l4res-p.pima.edu" failed: first network error, wait for 15 seconds
2349:20140410:110101.912 temporarily disabling SNMP agent checks on host "l4res-p.pima.edu": host unavailable
2349:20140410:110202.014 enabling SNMP agent checks on host "l4res-p.pima.edu": host became available

{SNMP_COMMUNITY} is a global variable and works to get all LLD items.

In the item list I get Not Supported with the error: l4res-p.pima.edu: [-2] Name or service not known

Thank You again,

Erik

[aib]

Sorry about that - my eyes so old that I cannot see properly your images.

When you said {SNMP_COMMUNITY} - did you mean {$SNMP_COMMUNITY} or something else?

One more change in zabbix_server.conf :
- check the graph "Zabbix Data Gathering Process busy"
- if any of pollers busy for 100% - increase the amount of StartPollers in config and restart server

[Toonces]

I apologize for the size of the images. They look very large on my system but I can barely see the posted ones. Perhaps a resizing issue?

You spotted my issue with the incorrect global variable for SNMP_COMMUNITY. I looked it over a hundred times and didn't catch that I had entered it incorrectly on that particular item. It should indeed be {$SNMP_COMMUNITY} and was not. I checked the graph and found unreachable pollers occasionally hit 100% so I increased the number to 5.

Thank You for the help!!

Erik

[aib]

Awesome!
Now you will have different questions , I guess.