Network Management / (OpenView-NNM) Practitioners Forum
Showing results for 
Search instead for 
Did you mean: 

nnm 9.1 -> 9.2 hostname problem

Go to solution
Occasional Advisor

nnm 9.1 -> 9.2 hostname problem


I have problem with nodes hostnames after upgrade from 9.1 to 9.2.

Management addess selection is:

1. seed ip/management ip

2. lowest loopback

3. interface matching


Before upgrade i had buch of nodes with name resolved from seed IP,

now it changed to public ip addesses of operator. (eg

Most It concernes nodes without loopback with two or more physical L3 interfaces.

How to come back to previous situation ?



Honored Contributor

Re: nnm 9.1 -> 9.2 hostname problem

Hi Piotr


Sorry I can't help with your problem, but I just wanted to let you know that I'm seeing something similar with another system that's been upgraded from 9.11p3 -> 9.20.


I haven't quite gotten to the bottom of it yet, but it looks like it's pretty much the same thing you're seeing - some nodes that had been loaded from a seed IP previously (thus forcing a specific IP to be used for name resolution) are now using a hostname based on the reverse DNS of an interface IP. 


My name selection criteria is still short DNS Name, short sysName, IP. I could change to use short sysName everywhere, but that might change other nodes.


It's a bit frustrating, because now several devices are not in the right node groups, as my node group filters were based on nodeName, not sysName. Looks like I'm going to have to try removing/re-adding some devices, using the seed IP.

Honored Contributor

Re: nnm 9.1 -> 9.2 hostname problem

Just a little bit more to add to this, on some of the affected nodes, I can see that the management IP is still the loopback0.


But the IP that's been used to resolve the hostname is the first listed IP address. 


If I delete the node, then re-add it (using the IP that reverse resolves to the correct name), it shows up correctly.


Looks like I've got A) some manual node deleting/adding to do, and B) a case to log.

Occasional Advisor

Re: nnm 9.1 -> 9.2 hostname problem

Hi, it looks like that we have the same problem, thanks for you post
Honored Contributor

Re: nnm 9.1 -> 9.2 hostname problem

I've logged a case about it. Will let you know if we find a resolution.
dieter boschung
Honored Contributor

Re: nnm 9.1 -> 9.2 hostname problem



Make sure your has this line activated (remove the comment signs)



Then restart ovjboss and run a config poll agains the node. That should make sure that the name of the node is set to the resolved name of the management address.


Kind regards


HP Support
If you find that this or any post resolves your issue, please be sure to mark it as an accepted solution.

Re: nnm 9.1 -> 9.2 hostname problem

Did you check the file?

(HP BTO Software\shared\nnm\conf\props\



HostNameMatchManagementIP should be excluded.


#com.hp.ov.nms.disco.HostNameMatchManagementIP = false




HP BTO Software\shared\nnm\conf\props\


# Lookup Management IP Address for the Node Host Name
# This parameter determines if disco should use management IP for the host name. Before 9.0, disco will lookup
# all available IP addresses to find a valid host name. The default value is true.
# If management IP does not have corresponding DNS name, IP address will be set to host name directly.
# It is highly recommended that customers only change this parameter at initial time to make the node host name
# stable. Late time change could break other configurations, such as node group settings and SNMP specific node settings,
# because node name could be changed.
#com.hp.ov.nms.disco.HostNameMatchManagementIP = false

Re: nnm 9.1 -> 9.2 hostname problem

Ouch!, was a bit too late :-)

Acclaimed Contributor

Re: nnm 9.1 -> 9.2 hostname problem

Thank you, saved my day !



Honored Contributor

Re: nnm 9.1 -> 9.2 hostname problem

+1 from here too - we have just made this change, and it is now working as expected.



//Add this to "OnDomLoad" event