Re: snmpd droped if library pthread linked

   [ First - *please* don't mail me privately, without copying
     any responses to the mailing list.  I don't have the time
     or inclination to offer private, unpaid, SNMP consultancy.
     Keep discussions to the list, where others can both learn
     and offer advice.  Thanks.   ]


On 1 March 2011 10:00,  <[email protected]> wrote:
> The snmpd dropped after first request and no response received.
> Here my print statements of the snmpd. If i do not link the pthread library it works fine.
>
> Here is my request:
> snmpget -v2C -c public 192.168.10.71 sysLocation.0
> Timeout: No Response from 192.168.10.71.
>
> snmpd print statements:
> snmpd -f -Le -d
> Initializing networkData - get_network_data retval 0
> initialize_table_moduleParamTable
> initialize_table_channelParamTable
> initialize_table_globalChannelDataTable
> initialize_table_deviceDataTable
> NET-SNMP version 5.3.3
>
> Received 43 bytes from UDP: [192.168.10.163]:50115->[192.168.10.71]
> 0000: 30 29 02 01  01 04 06 70  75 62 6C 69  63 A0 1C 02    0).....public...
> 0016: 04 2A 22 0B  C0 02 01 00  02 01 00 30  0E 30 0C 06    .*"........0.0..
> 0032: 08 2B 06 01  02 01 01 06  00 05 00                    .+.........
>
> Received SNMP packet(s) from UDP: [192.168.10.163]:50115->[192.168.10.71]
>  GET message
>    -- SNMPv2-MIB::sysLocation.0
>
> Norman

OK - so the agent is quitting immediately it receives a request.
The only way to track this down is probably to run the agent
under a debugger, and generate a backtrace to see exactly
where it is crashing.

The Wiki page
   http://www.net-snmp.org/wiki/index.php/Debugger
       has some guidance about doing this.


Note that running multiple threads within an agent is not something
that any of the core developers have really tried to do,
As long as all of the SNMP-related activity is confined within a
single thread, this *should* work,   but we're seeing reports of
problems with this - you may be being hit by the same problem.

Dave

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