2010/1/21 Alexander King <chenyapu1...@qq.com>:
> sys-man snmp # /usr/local/sbin/snmpd -f -L
> Warning: no access control information configured.
> It's unlikely this agent can serve any useful purpose in this state.

> Can anybody tell me where maybe I am wrong?


This error message tells you exactly what is wrong.
There is no access control in the snmpd.conf file
that this agent is using.


> sys-man snmp # /usr/local/sbin/snmpd -f -Le -c
>       /usr/local/share/snmp/mibs/snmpd.conf
> Turning on AgentX master support.

This file does at least contain some form of access control.
Though it's unclear why you are putting the config file into
a MIB directory.   It would more naturally go into
   /usr/local/share/snmp
or
   /usr/local/etc/snmp


> NET-SNMP version 5.4.2.1
> Segmentation fault

Hmmm....  that shouldn't be happening.
And it's not clear exactly where things are falling over.
Does this happen immediately when you start the agent,
or after a short delay?

Try starting the agent using

   snmpd -f -Le -c .../snmpd.conf  -Dread_config

That should at least give some indication of whether
the agent is failing while processing the config file
(and if so, where).


Perhaps try with a minimal snmpd.conf file
e.g. containing *just* a "rocommunity public" line (and nothing else).
If that works, then you can build up to the full configuration, and
see exactly what introduces the crash.

If that minimal config also fails, then the problem lies elsewhere....

Dave

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