RE: how to use net-snmp for monitoring java processes in linux

Thanks a lot waqas for your prompt reply. Is there a way i could do the same in java? I am sorry i was not very clear about our limitation to only use java. Keeping this in mind, what will be my way to go?

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________________________________
From: Mohammad Waqas Athar <[email protected]>
Sent: Monday, February 13, 2012 4:52 AM
To: Zain Mirza <[email protected]>; [email protected] <[email protected]>
Subject: RE: how to use net-snmp for monitoring java processes in linux


Well it seems like you have not seen any tutorials on net-snmp.
First of all you need to create mib files for all the parameters that you want to monitor.Then you have to extend your snmpd agent so that it answers request for your parameters.For this you have to use mib2c to generate code. Follow examples given here http://www.net-snmp.org/docs/man/mib2c.html
Then you need to compile your code as sub agent or dynamic loadable object
http://www.net-snmp.org/wiki/index.php/TUT:Writing_a_Subagent
http://www.net-snmp.org/wiki/index.php/TUT:Writing_a_Dynamically_Loadable_Object

Once that is done you need to configure your snmpd.conf, run your agent and query your parameters. This is just the guideline . Please see net-snmp tutorial for a detailed info
You can integrate file reading/writing or database in the code generated by mib2c.For this you need to see the above tutorials.With this your agent will be able to interact with db or file.

Regards

________________________________
From: [email protected]
To: [email protected]
Date: Sun, 12 Feb 2012 19:58:36 -0500
Subject: how to use net-snmp for monitoring java processes in linux


Hi All,



I am very new to net-snmp. I have many hosts with each running few java processes. These processes have custom statistics which we want to be reported back to an SNMP server  for e.g. EM7. I started off by writing a separate “.mib” for each process and its scalar statistics. Now I have following questions to answer:



1-      How do I feed these multiple .mibs( one mib for each process on that host)  to snmpd on that host?

2-      How does snmpd get configured to respond to a get for an individual statistic for a process?

3-      How does the process communicate the statistics?

(For step 3, in my mind one of the following will be needed:

  a) i have to write add extra layer in my java processes that interacts with snmpd agent. If so how ? code examples?

 b) can I write some generic code which can be invoked by my snmpd to read some data repository (a file or db etc.). If so how and how can I integrate it with snmpd? Code examples?

c) I have to write sub agents? Do I also have to use AgentPro necessarily to generate java stubs for my mib files ? if so how do I plug them in to snmpd ?





I guess I do not have one clear way of implementing a solution. A feasible solution recommendation would really help me get around this. Since I have been

reading information in pieces but so far found no clear example on “how to monitor custom statistics of java processes on ” etc. to explain all the pieces.



Your prompt response will really help me in my endeavor and probably I can write that example for the rest of us with your help.





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