Hi Benhard,
I've a similiar requirement, in which subagent is part of a large
application. Since application can be started/stopped at run-time same is
applicable for subagent also.
any help on this?
thganks & regards,
Nitin
-----Original Message-----
From: Penz, Bernhard [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 11, 2004 12:22 PM
To: Richard Sun; [EMAIL PROTECTED]
Subject: RE: APIs to restart agentx subagent
Hallo,
The AgentX subagent tries to automatically re-register its MIB range as soon
as the master agent is up again. It should not be necessary to manually do
all that stuff. Is there a specific reason why you use the IPC heartbeat
messaging?
Regards,
Bernhard
> -----Original Message-----
> From: Richard Sun [mailto:[EMAIL PROTECTED]
> Sent: Dienstag, 10. August 2004 21:57
> To: [EMAIL PROTECTED]
> Subject: APIs to restart agentx subagent
>
> Hi, all,
>
> I need to implement the following scenario:
> Assume AgentX master/subagent are running happily. Now:
> 1. Master goes down;
> 2. Subagent successfully detects master went down (using
> some kind of propritory IPC heartbeat messaging); 3. Now
> master comes up, and the subagent now
> is informed that master is up (using
> again propritory IPC messaging);
> 4. The question is: what to do in subagent to
> cause re-register of all its MIBs with master?
>
> I tried snmp_shutdown(), then trying to start SNMP again, but
> I got the following segmentation fault (at the end of this
> email). I am using ver 5.0.8.
>
> I use register_mib_range in sugagent.
> I also tried to unregister_mib_range, then call
> register_mib_range again. I got segmentation fault again.
>
> Then I noticed lots of the discussions on "Deregistration of
> a MIB", but it mainly talks an API to unregister handler. I
> do not register any handler.
>
> To solve my problem, the ideal case is an API to cause
> subagent to re-register all existing MIB with master agent.
> Is there such an API (or a set of APIs)?
> If not, does any of the latest version support
> register_mib_range AND unregister_mib_range correctly?
>
> Does agentxPingInterval help here?
> Thanks for your help.
> -Richard
>
>
> (gdb) where
> #0 __pthread_mutex_lock (mutex=0x0) at mutex.c:99
> #1 0x0fcada90 in __libc_free (mem=0x10051e48) at malloc.c:3154
> #2 0x0ffa3634 in netsnmp_handler_registration_free
> (reginfo=0x10092190)
> at ../../../net-snmp/agent/agent_handler.c:444
> #3 0x0ff9de50 in netsnmp_subtree_free (a=0x100551b0)
> at ../../../net-snmp/agent/agent_registry.c:83
> #4 0x0ff9ed4c in netsnmp_register_mib (moduleName=0x10053c60
> "\017�\231
> \017�\231 next",
> var=0x0, varsize=4294967295, numvars=0,
> mibloc=0x7ffffa18, mibloclen=1, priority=0,
> range_subid=0, range_ubound=0, ss=0xfcada90,
> context=0x0, timeout=0, flags=0,
> reginfo=0x10092190, perform_callback=264952464)
> at ../../../net-snmp/agent/agent_registry.c:619
> #5 0x0ffa306c in netsnmp_register_handler (reginfo=0x10092190)
> at ../../../net-snmp/agent/agent_handler.c:163
> #6 0x0ff2b208 in netsnmp_register_null (loc=0x7ffffa18, loc_len=1)
> at ../../../../net-snmp/agent/helpers/null.c:28
> #7 0x0ffa00a4 in setup_tree () at
> ../../../net-snmp/agent/agent_registry.c:1423
> #8 0x0ff9d930 in init_agent (app=0x1 <Address 0x1 out of bounds>)
> at ../../../net-snmp/agent/snmp_vars.c:231
>
>
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