RE: sysUpTime returns an error

Hi Nikos, Dave and all,

> Oh, well, that explains everything. Everyone here assumed that
sysUpTime >was returned from the agent, and since nobody had problems
like that, we 
>couldn't figure out what's wrong. You should have mentioned that at the

>beginning, a lot of time got waisted because of that.

I apologize again for wasting everyone's time, but as I was thrown into
this project without any guidance and without even knowing what SNMP is
- not to mention masters and agents - it took me a while to even start
figuring things out. I'm not writing the agent, or even rewriting it -
just trying to fix it, and it proves to be quite a task...
I really do appreciate all the help here and wouldn't even know how to
move on without it.

>To exclude MIBs you use:
>snmpd -I -DISMAN-EVENT-MIB (that's I as in Internet)

>Minor correction - you should specify the name of the MIB
>*code* module (e.g. 'mteEvent'), not th name of the MIB file.
>See 'mibgroup/mib_module_inits.h' for the full list of configured
>modules for your agent.   Note that you may need to exclude
>more than one code module.

Yes, I tried excluding specific mte<...> modules, (and even all) - but
that didn't prove to help. Either get the same "answer", or ruin it all
(the system-mib stops replying altogether). Tried running it with the
-Dmib_init option, but I don't get no list. I am not sure what the
codependencies are, or how to learn them.
I attach here the mib_modules_init.h, perhaps you can advise.

(Just to make clear: I am not the one that can make compile-time
changes, only invocation / runtime.)

As I really do struggle to make sense of it and make it all work, I'll
appreciate any advice you can give me, or any reference I might have
missed that can shed more light.

Thanks and apologies again,

-Tanya




-----Original Message-----
From: Nikos Balkanas [mailto:[email protected]] 
Sent: Tuesday, January 27, 2009 22:01
To: Tanya Brudner; [email protected]
Subject: Re: sysUpTime returns an error



for more CLI options use snmpd -h

snmpd -Dmib_init

will give you the MIBs that snmpd loaded at startup.

You will have to go by trial and error. i would start by removing DISMAN

mibs first. But you have to consider that it is the subagent that needs 
fixing, not the mIB tree.

BR,
Nikos
----- Original Message ----- 
From: "Tanya Brudner" <[email protected]>
To: "Nikos Balkanas" <[email protected]>; 
<[email protected]>
Sent: Tuesday, January 27, 2009 8:42 PM
Subject: RE: sysUpTime returns an error


Thanks again, Nikos, for all your help.

I still don't really understand how this problem is caused, but I think
it has something to do with the fact that the subagent is actually the
one that "answers" to sysUpTime, (perhaps this sheds light on things and
I should have mentioned it earlier, if so - please forgive the newbie :)
).

I found a while back how to exclude the system_mib module on invocation
(in the snmpd start script), I'd like to exclude this cross-reference as
well (and see what happens :) ). How do I do that (find what's the
module I need to exclude)?

Thanks,

-Tanya



-----Original Message-----
From: Nikos Balkanas [mailto:[email protected]]
Sent: Tuesday, January 27, 2009 18:21
To: Tanya Brudner; Mike Ayers; [email protected]
Subject: Re: sysUpTime returns an error

sysUpTime is defined in 2 places: RFV1213-MIB and SNMPv2-MIB.
DISMAN-EVENT-MIB has an instance of SNMPv2. The first one (RFC) is the
official, the second one is depreciated, but still working.

Maybe the problem is with mteTriggerDeltaDiscontinuityID in
DISMAN-EVENT-MIB
(read).

BR,
Nikos
----- Original Message ----- 
From: "Tanya Brudner" <[email protected]>
To: "Mike Ayers" <[email protected]>; "Nikos Balkanas"
<[email protected]>; <[email protected]>
Sent: Tuesday, January 27, 2009 5:42 PM
Subject: RE: sysUpTime returns an error



Hello all,

I thank you for your help and apologize for my (unforeseen) absence and
thus - belated response.

I ask to remind you that the issue in question is the error in sysUptime
(please see below). In short - all attempts to get its value failed
miserably.
The result for snmpget ... returns: "DISMAN-EVENT-MIB::sysUpTimeInstance
= No such Object available on this agent at this OID".

- I tried changing the conf. file as was suggested by Nikos, no luck.

- Snmpwalk skips it all together, returning just:
SNMPv2-MIB::sysDescr.0 = STRING: xxxxx
SNMPv2-MIB::sysObjectID.0 = OID: xx.x.x.x
SNMPv2-MIB::sysContact.0 = STRING: Tanya B.
SNMPv2-MIB::sysName.0 = STRING: xxxxxxx
SNMPv2-MIB::sysLocation.0 = STRING:
SNMPv2-MIB::sysServices.0 = INTEGER: 3

- The snmpgetnext on .1.3.6.1.2.1.1.3 (as Mike suggested) returned
sysContact data.

However, something has happened in my absence, which I'll appreciate
your input for:
In an attempt to solve the issue, someone here edited the
DISMAN-EVENT-MIB and removed all references to sysUpTime and changed the
DEFVAL for mteTriggerDeltaDiscontinuityID to 0 (zero).

Surprisingly enough - the problem was solved.

As I am new into the SNMP world, and that person just went "brut-force"
and changed it without understanding - I turn to you for explanation. :)

Thanks again,

-Tanya

-----Original Message-----
From: Mike Ayers [mailto:[email protected]]
Sent: Friday, January 02, 2009 06:32
To: Nikos Balkanas; Tanya Brudner; [email protected]
Subject: RE: sysUpTime returns an error


> From: Nikos Balkanas [mailto:[email protected]]
> Sent: Thursday, January 01, 2009 2:18 PM

> Yes. You can see clearly the definition of sysUpTime in the
> snmpwalk output.
> You have no problems with MIBs. In fact using either MIBs for
> sysUpTime (RFC or DISMAN) will get you the same result, because they
are
> getting it from the same place:

Just to be clear, SNMPv2-MIB::sysUpTime and
DISMAN-EVENT-MIB::sysUpTimeInstance are the same OID.  The redefinition
of the OID by the disman group was a mistake.  There is no way for an
application to know, when converting that value to text, which of the
two names to use.  It seems that the net-snmp tools will always print
the disman value - do not worry, it is still sysUpTime.

The real item of concern is that your agent does not seem to
have a sysUptime value.  Let's try something - could you try a get-next
on .1.3.6.1.2.1.1.3 and then cut-n-paste command and output (with
security informastion obfuscated) to the list, please?


Thanks,

Mike

P.S.  Happy New Year

-----Original Message-----
>From: Nikos Balkanas [mailto:[email protected]]
> Sent: Thursday, January 01, 2009 2:18 PM
>Yes. You can see clearly the definition of sysUpTime in the snmpwalk
>output.
>You have no problems with MIBs. In fact using either MIBs for sysUpTime
>(RFC or DISMAN) will get you the same result, because they are getting
it >from the same place:

>mib-2->system->sysUpTime->sysUptimeInstance

>as you can see from the walk.

>I am sorry for keeping you this late.  This is my configuration
>(snmpd.conf) with passwords crossed out. Replace all xxx with your
>passwords. It works fine for me. Please back up yours, take mein and
>restart snmpd and test again.

BR,
Nikos

----- Original Message -----
From: "Tanya Brudner" <[email protected]>
To: "Nikos Balkanas" <[email protected]>;
<[email protected]>
Sent: Thursday, January 01, 2009 11:58 PM
Subject: RE: sysUpTime returns an error


Nikos,

The file - renamed.
The snmpd - restarted.
The snmpget returns the exact same error as before
("DISMAN-EVENT-MIB::sysUpTimeInstance = No such Object available on this
agent at this OID").
(If using the specific RFC1213-MIB reference, I get the same error text,
just for the correct mib ("RFC1213-MIB::sysUpTime.0..")

The snmptranslate worked properly this time - please see the attached
file.


Thanks again, very very much!

-Tanya


-----Original Message-----
From: Nikos Balkanas [mailto:[email protected]]
Sent: Thursday, January 01, 2009 23:29
To: Tanya Brudner; [email protected]
Subject: Re: sysUpTime returns an error

Looks like your sysUptime is correctly set.
DISMAN-EVENT-MIB seems to have some issue.

Please:
mv /usr/local/share/snmp/mibs/DISMAN-EVENT-MIB.txt.1
/usr/local/share/snmp/mibs/DISMAN-EVENT-MIB.txt

restart snmpd.

snmpget 127.0.0.1 sysUpTime.0

If this doesn't work, one last output from:

snmptranslate -M+. -m DISMAN-EVENT-MIB -Tp -IR mib-2

Thanx,
Nikos
----- Original Message -----
From: "Tanya Brudner" <[email protected]>
To: "Nikos Balkanas" <[email protected]>;
<[email protected]>
Sent: Thursday, January 01, 2009 10:55 PM
Subject: RE: sysUpTime returns an error


Thanks,

The output you requested:

+-- -R-- TimeTicks sysUpTime(3)

(keeping my fingers crossed)
-Tanya



-----Original Message-----
From: Nikos Balkanas [mailto:[email protected]]
Sent: Thursday, January 01, 2009 22:14
To: Tanya Brudner; [email protected]
Subject: Re: sysUpTime returns an error

Thanx. I think I see something. If you can please mail me also (1 line
output):

snmptranslate -M+. -m SNMPv2-MIB -Tp -IR sysUpTime

BR,
Nikos
----- Original Message ----- 
From: "Tanya Brudner" <[email protected]>
To: "Nikos Balkanas" <[email protected]>;
<[email protected]>
Sent: Thursday, January 01, 2009 9:56 PM
Subject: RE: sysUpTime returns an error


Hi Nikos,

In the attached file are the snmpwalk result (I'm not sure what to make
of it, really :) ), and the 'ls' output.

Thanks again,

-Tanya


-----Original Message-----
From: Nikos Balkanas [mailto:[email protected]]
Sent: Thursday, January 01, 2009 21:29
To: Tanya Brudner; [email protected]
Subject: Re: sysUpTime returns an error

Please run:

ls -la /usr/local/share/snmp/mibs/DISMAN*

and also:

snmpwalk 127.0.0.1 dismanEventMIB

And send output.

Thanx,
Nikos
----- Original Message ----- 
From: "Tanya Brudner" <[email protected]>
To: <[email protected]>
Sent: Thursday, January 01, 2009 8:56 PM
Subject: RE: sysUpTime returns an error


> Hi,
>
> Thanks again but I am still a bit confused:
>
> My access rights (as defined in the /etc/snmp/snmpd.conf) (almost from
> the sample file) are defined as following:
>
> Com2sec my-sec-ro default public
> Com2sec my-sec-rw default private
>
> Group my-ro-group v1 my-sec-ro
> Group my-rw-group v1 my-sec-rw
> Group my-ro-group usm my-sec-ro
> Group my-rw-group usm my-sec-rw
>
> View all included .1
>
> access my-rw-group "" v1  noauth exact all all none
> access my-ro-group "" v1  noauth exact all none none
> access my-rw-group "" usm  noauth exact all all none
> access my-ro-group "" usm  noauth exact all none none
>
> rwuser myuser authPriv (the user is created directly by putting the
> createUser directive in the /var/lib/... snmpd.conf file).
>
> Perhaps there is anything wrong here, or you can advice on something
> else I could try...
>
> Thanks again,
>
> -Tanya
>
> -----Original Message-----
> From: Wes Hardaker [mailto:[email protected]]
> Sent: Wednesday, December 31, 2008 18:47
> To: Tanya Brudner
> Cc: [email protected]
> Subject: Re: sysUpTime returns an error
>
>>>>>> On Tue, 30 Dec 2008 22:23:01 +0200, "Tanya Brudner"
> <[email protected]> said:
>
> TB> I have a problem with Get-request on a single mib: SysUpTime.
>
> TB> On a snmpget -v3 ..... system.sysUpTime.0, it returns
> TB> ""DISMAN-EVENT-MIB::sysUpTimeInstance = No such Object available
on
> this
> TB> agent at this OID"
>
> It looks like you don't have access rights to that object.  Check your
> access control settings, or check that the agent was compiled to
include
> the system group (it should have been unless you're doing something
> odd).
>
> The DISMAN-EVENT-MIB part is actually just misleading.  It is the
right
> object.  The DISMAN-EVENT-MIB defines the scalar instance as something
> special for it's own purposes.  Just ignore that part in your error
> comment as it's not relevant to your problem.
> -- 
> Wes Hardaker
> Sparta, Inc.
>
>
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