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RE: [nv-l] nvsniffer / servmon

To: <nv-l@lists.us.ibm.com>
Subject: RE: [nv-l] nvsniffer / servmon
From: "Barr, Scott" <Scott_Barr@csgsystems.com>
Date: Fri, 31 Oct 2003 15:08:05 -0600
Delivery-date: Fri, 31 Oct 2003 21:20:19 +0000
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Thread-topic: [nv-l] nvsniffer / servmon
I do not get service icons on the node.

I have opened a PMR. We waited for this feature and now that it's here, it's 
not usable and there is nothing in the docs to indicate it shouldn't work. 

-----Original Message-----
From: owner-nv-l-digest@lists.us.ibm.com
[mailto:owner-nv-l-digest@lists.us.ibm.com]On Behalf Of Jane Curry
Sent: Friday, October 31, 2003 3:01 AM
To: nv-l@lists.us.ibm.com
Subject: Re: [nv-l] nvsniffer / servmon


Hi  Scott,
We were having this debate only last week.  I don't know the answers but 
I've inserted my guesses below.  Anyone else know?

BTW - do you get the service objects for your servmon services showing 
at the interface level of a node?  I can't make this work on my AIX 5.1 
system.  From reading the docs, I thought this was now supposed to work 
on Unix platforms as well as Win.

Cheers,
Jane

Barr, Scott wrote:

> NetView v7.1.4 / Solaris 2.8
>  
> Greetings. There is a new enhancement /  replacement for nvsniffer 
> that I am having trouble getting to work. The concept is to detect 
> whether a particular TCP port is accepting connections and report an 
> event if it is not. It looks to me like servmon will now do this. 
> nvsniffer as I recall will discover but not monitor port level 
> applications.
>  
> The problem is this:
>  
> The servmon configuration requires that you specify what port the 
> application runs on and what smartset contains the nodes that are 
> considered "targets" for the servmon application.
> I have a smartset created that has 3 Unix servers.
> Each of the Unix servers has multiple instances of the software 
> running on multiple different ports.

You can put multiple ports in the servmon port field if you wanted a 
collection of everything running app XYZ

> Each of the Unix servers is multi-homed (4 physical and 12 virtual 
> addresses).

My guess here is that it uses the Selection Name of the devices and 
tests against whatever the DNS gives him as it's IP address - be 
interesting to know the real answer to this one...

> Each instance of the software is tied to a virtual address.

What does your DNS do with these virtual addresses????

> Each instance of the software uses one or more ports.

I doubt that servmon can tell you how many instances of the software are 
running - just whether there IS an instance running.  Only way I can 
think of tackling this is to use discovery and status custom plugin 
modules to run scripts that do what you want.  The issue is how you 
"talk" to each system as the scripts actually run on the NetView 
server.  I've wondered about using rsh/ssh/rexec to do this but not 
actually tried yet....

> In my configuraiton, I specify I am interested on port 26001 (for 
> instance).
>  
> Since the boxes are multi-homed, I don't think servmon can tell which 
> interface/IP address to probe for port 26001 activitiy
> The creation of the smarset means that the nodes listed are the right 
> boxes, but not the right interfaces for activity on those ports.
>  
> SO my question is - is servmon smart enough to figure out the traffic 
> is NOT on the interface that is resolved in DNS and thus located in my 
> smartset? Since servmon actually adds a field in ovwdb (field name 
> drivin by servmon.conf) I cannot specify an interface in the servmon 
> config or the smartset - only a node name since it doesn't appear to 
> add a field to an interface object, only to a node object.
>  
>  
>  
>  
>
> /Scott Barr/
>
> /Distributed Network Engineer/
>
> /CSG Systems Inc./
>
> /scott_barr@csgsystems.com/
>
> /Voice: 402-431-7939/
>
> /Fax: 402-431-7413/
>
>
>  


-- 
Tivoli Certified Consultant & Instructor
Skills 1st Limited, 2 Cedar Chase, Taplow, Bucks, SL6 0EU, UK
Tel: +44 (0)1628 782565
Copyright (c) 2003 Jane Curry <jane.curry@skills-1st.co.uk>.  All rights 
reserved.





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