Nagios Support Forum

Dear Sir/Madam,

We just installed 8 DencoHappel Air Conditioning Model:DMA018UFSIS4PE1 with Carel pCOWeb in our data center

We would like to use Nagios XI to do remote monitoring on these 8 DencoHappel devices.

Kindly advise how we can use Nagios XI to monitor these 8 devices thanks



Kind Regards
Martin W. Kuria

What exactly are you interested in monitoring on these devices? Are they SNMP enabled?

As you can see from the attached image they are Air Conditioning devices for cooling our Data center, we would like to monitor, using Nagios XI

We would like to monitor the temp, humidity, and thresholds inside our data center

Yes SNMP is enabled but when we try to probe the devices from our Nagios XI we are getting the error "No OIDs specified"

The devices are using Carel pCOWeb to monitor DencoHappel Air Conditioning.

So need Nagios XI script to check for carel pcoweb alarms supported by DencoHappel Air Conditioning Unit

Also we have tried snmpwalk.

When we do snmpwalk on a ACP UPS we installed sometime ago there is a positive out as you can see below:

[ror@kr02 libexec]# snmpwalk -v 2 -c yyyn 10.0.x.2u system
SNMPv2-MIB::sysDescr.0 = STRING: APC Web/SNMP Management Card (MB:v4.0.1 PF:v5.1.7 PN:apc_hw05_aos_517.bin AF1:v5.1.7 AN1:apc_hw05_sumx_517.bin MN:AP9631 HR:05 SN: ZA1240019478 MD:10/03/2012) (Embedded PowerNet SNMP Agent SW v2.2 compatible)
SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.318.1.3.27
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (492562900) 57 days, 0:13:49.00
SNMPv2-MIB::sysContact.0 = STRING: ICTS-DC
SNMPv2-MIB::sysName.0 = STRING: dack Top
SNMPv2-MIB::sysLocation.0 = STRING: da Center
SNMPv2-MIB::sysServices.0 = INTEGER: 72
SNMPv2-MIB::sysORLastChange.0 = Timeticks: (0) 0:00:00.00
SNMPv2-MIB::sysORID.1 = OID: SNMPv2-MIB::snmpMIB
SNMPv2-MIB::sysORID.2 = OID: SNMP-FRAMEWORK-MIB::snmpFrameworkMIBCompliance
SNMPv2-MIB::sysORID.3 = OID: SNMP-MPD-MIB::snmpMPDCompliance
SNMPv2-MIB::sysORID.4 = OID: SNMP-USER-BASED-SM-MIB::usmMIBCompliance
SNMPv2-MIB::sysORID.5 = OID: SNMP-VIEW-BASED-ACM-MIB::vacmMIBCompliance
SNMPv2-MIB::sysORDescr.1 = STRING: The MIB Module from SNMPv2 entities
SNMPv2-MIB::sysORDescr.2 = STRING: SNMP Management Architecture MIB
SNMPv2-MIB::sysORDescr.3 = STRING: Message Processing and Dispatching MIB
SNMPv2-MIB::sysORDescr.4 = STRING: USM User MIB
SNMPv2-MIB::sysORDescr.5 = STRING: VACM MIB
SNMPv2-MIB::sysORUpTime.1 = Timeticks: (0) 0:00:00.00
SNMPv2-MIB::sysORUpTime.2 = Timeticks: (0) 0:00:00.00
SNMPv2-MIB::sysORUpTime.3 = Timeticks: (0) 0:00:00.00
SNMPv2-MIB::sysORUpTime.4 = Timeticks: (0) 0:00:00.00
SNMPv2-MIB::sysORUpTime.5 = Timeticks: (0) 0:00:00.00
[root@keondc2ng002 libexec]#

But when we run snmpwalk on this new devices we are getting timeout what is missing on this device

[ror@kr02 libexec]# snmpwalk -v 2 -c yyyn 10.0.x.xx system
Timeout: No Response from 10.0.x.xx
[ror@kr02 libexec]#

What are we missing kindly advise

There's likely still some additional work needed on the DencoHappel Air Conditioning Model:DMA018UFSI device(s) to properly enable them for SNMP. It looks as if there is a single controller for the unit(s)? I can't find very good documentation regarding these so it's hard to tell, but everything I've read indicates the SNMP configuration is handled there.

You may need to change the community string, update the allowed hosts, or do some other sort of configuration on the units themselves. SNMP as a protocol is pretty simple; It either allows connections to a given tree or it doesn't. The device(s) might be blocking the system tree used in your above snmpwalk command. Or they may simply not be available. Does an snmpwalk against this device without specifying a tree produce different results? Like so:

martinkuriax wrote:Yes SNMP is enabled but when we try to probe the devices from our Nagios XI we are getting the error "No OIDs specified"

If you are certain the proper trees are reachable via SNMP, you might try and snmpwalk/snmpget against a specific tree/OID on the device. Unfortunately I cannot find any documentation regarding the MIBs the device(s) may or may not hold; Perhaps you have this available?

Thanks @mcapra!

@martinkuriax, as mcapra said, system may be blocked or not available. Make sure you are using the correct community string. Look through the documentation that came with the devices - the SNMP section in particular (I hope there is one available). Once you are able to run snmpwalk successfully, you could save the output in a file, open it in a text editor, and examine it in order to determine what OIDs to use for the monitoring temperature, humidity, etc. Let us know if this helped. Thank you!

I try that and keep you posted

Sure. We will keep the topic open for the time being.