Re: SNMPD hangs after awhile

"[email protected]" <[email protected]>
Newsgroups gmane.network.net-snmp.user
Message-ID <[email protected]>
Thanks Suresh.

I ran strace and for some reason, it cleaned out the queue...
I'm not exactly sure why snmpd gets stuck. When I keep strace open and I 
send a snmpwalk to the host and it starts to hang again. I see alot of 
functions being called, but the only somewhat error-like notification I 
can find is this one:

    open("/etc/hosts.allow", O_RDONLY)      = -1 ENOENT (No such file or
    directory)
    open("/etc/hosts.deny", O_RDONLY)       = -1 ENOENT (No such file or
    directory)

Which is correct, cause they don't exist. Could snmpd really crash 
because of this???

-Jeffrey

---------------------------------
Jeffrey Lensen
hyves:     http://skyler.hyves.nl
mail/msn:  [email protected]



Pamidipati Suresh-G20238 wrote:

> Hi,
>  
> I don't the reason for this behavior..
> But, on mvl-ppc, we also observed that snmpd hangs sometimes. When we 
> checked the strace of SNMPD at that point of time, it was stuck in the 
> SYS_265() system call. Can you please check with strace when snmpd hangs.
>  
> Thanks,
> Suresh.
>  
>  
>
>     -----Original Message-----
>     *From:* [email protected]
>     [mailto:[email protected]] *On Behalf
>     Of *[email protected]
>     *Sent:* Tuesday, July 18, 2006 1:57 PM
>     *To:* [email protected]
>     *Subject:* SNMPD hangs after awhile
>
>     Hello all,
>
>     Currently I have Nagios set up to use SNMP 5.2.2 to perform checks
>     on nearly 200 machines. Recently some of my SNMPD daemons started
>     hanging and stop responding to snmp requests.
>     When I check with netstat, I get these results back:
>
>         Active Internet connections (only servers)
>         Proto  Recv-Q   Send-Q   Local Address         Foreign
>         Address    State       PID/Program name
>         udp     107824   0             *:snmp                    
>         *:*                                            31154/snmpd
>
>     The Recv-Q has become insanely high (it's always 107824), which
>     leads me to believe the SNMPD daemon has been floaded with
>     requests somehow.
>     Does anyone know a workaround of some kind, or a way to flush the
>     queue if the SNMPD daemon crashed or something?
>
>     Thanks!
>
>     -Jeffrey
>
>-- 
>---------------------------------
>Jeffrey Lensen
>hyves:     http://skyler.hyves.nl
>mail/msn:  [email protected]
>    
>

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