Re: Wls agent as subagent to Sun's Snmp Master Agent

Question

I have successfully configured the WL SNMP agent as subagent to
Sun's (Solaris 7 in my case) master SNMP agent.
Sun's Solstice Enterprise Agent documentation under docs.sun.com
is a bit confusing but serves as a reference if not a step-by-step guide.
Here are the general steps that I took:
1) Modify the shipped startSNMPAgent.sh for your system password
and community (I wouldn't use "public"!).
Add some if-then-fi code to check for the $1 command line parameter,
so Sun's master agent can pass in the dynamically allocated port number
that the agent will listen to. I also changed the ownership of this
script so only root can see it, as it contains the WL admin password.
2) Go to the /etc/snmp/conf directory (default Solaris 7 install).
Create the files weblogic.rsrc and weblogic.reg using the mibiisa.*
files as templates.
3) In the weblogic.reg file, add the lines
"macros = { bea = enterprise.140 }" before the "agents" line.
This defines the weblogic agent's starting OID point.
Then, change the subtree line to "bea".
4) In the .rsrc file, change the command used to spawn the
agent to "/weblogic/startSNMPAgent.sh $PORT".
Be aware that this spawn command is visible through Sun's master
agent MIB, so don't put anything sensitive in there (like a
community name or password).
5) Finally, there is a timing condition that you should be aware of.
WebLogic's SNMP agent will only bind to an active WL server.
Sun's master agent will only bind to an active subagent.
Therefore, you should ensure that
WebLogic server is started first (and the server comes completely
up), then Sun's master agent is started. I setup my /etc/rc3.d
startup files to run weblogic before snmpdx. I had to insert a
sleep command to make sure that WL was completely up before
snmpdx was run. This is because my startup script runs java in
the background, so if you don't sleep then WL won't be up before
snmpdx spawns the subagent and tries to bind to it.
Finally, Sun's mib files can be found under /var/snmp/mib.
Easier to find than NT's mib files!
Hope that helps -
Tom
"Sanjeev Chopra" <[email protected]> wrote:
>
Robert Prakash <[email protected]> wrote in message
news:[email protected]...
Hi Sanjeev
My Wls agent is working fine as Master agent with Sun's Snmpdx as subagentto it.
There is no problem with that.
But can I make WLS agent, subagent to Sun's Snmp Agent.For that I needWls
SubAgent resource
files to be included in the configuration directory of Sun's Snmp Agent.The last time i checked, Sun's master agent is more "loosely coupled"
with
other agents it needs to co-ordinate with. I haven't tried it, however
i
beleive it should work. Because the master agent doesn't rely on built-in
protocol for interaction with other agents. (much like -otherAgents option
in the wls agent).
You just need to specify in SUN's syntax (resource files...) where the
wls
agent is running, what is its community, which MIBs it supports , what
should be the timeout and such ...
Good Luck!
If you run into any problem let me know.
Is this possible in the first place and if so how do I do it. I sawyour
response on the same issue for
Windows NT. I am mailing to find out if its different on Solaris(orUnix).
Thanks
Robert

Answer 1

Hello:
I created exactly as you specified. I.e weblogic.reg, weblogic.rsrc, weblogic.acl. But the issue I have is My weblogic snmp agent is listening on port 8061. Snmp demon on 161. So when I request the Snmp demon with OID of weblogic object. I am not getting the result also call is not reaching weblogic agent. Instead I am getting no such name or OID. So I am wondering why snmp demon is not forwarding the request to snmp demon.
Also Could you please explain the execution sequence of snmp demon and where you think I need to look at. Also please explain the constructs used in reg/acl/rsrc files.
Note:
I am using wls 6.1 sp2. So just my starting admin server. The enabled snmp gets started. Also I configured snmp demon so that when ever it gets started the weblogic server also starts. Also there is no issue in receiving traps.
Thanks in Advance.
Vijay