nv-l

RE: [nv-l] nvsniffer / servmon

2003-11-03 09:24:52
Subject: RE: [nv-l] nvsniffer / servmon
From: "Barr, Scott" <Scott_Barr AT csgsystems DOT com>
To: <nv-l AT lists.us.ibm DOT com>
Date: Mon, 3 Nov 2003 08:11:34 -0600
PMR13988

ESR appears to be down this morning.

-----Original Message-----
From: owner-nv-l-digest AT lists.us.ibm DOT com
[mailto:owner-nv-l-digest AT lists.us.ibm DOT com]On Behalf Of Jane Curry
Sent: Sunday, November 02, 2003 11:32 AM
To: nv-l AT lists.us.ibm DOT com
Subject: Re: [nv-l] nvsniffer / servmon


Scott,
Could you send your PMR number and I will try and attach my call to it?
Cheers,
jane


Barr, Scott wrote:

>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 AT lists.us.ibm DOT com
>[mailto:owner-nv-l-digest AT lists.us.ibm DOT com]On Behalf Of Jane Curry
>Sent: Friday, October 31, 2003 3:01 AM
>To: nv-l AT lists.us.ibm DOT 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 AT csgsystems DOT 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 AT skills-1st.co DOT uk>.  All rights 
reserved.




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