RE: SNMPD hangs after awhile

Hi Jeffrey,
 
As the following statements show that open call is returned with error
ENOENT, snmpd didn't get stuck at this function call.
 
Regards,
Suresh.
 
 

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
[email protected]
Sent: Tuesday, July 18, 2006 3:01 PM
To: [email protected]
Subject: Re: SNMPD hangs after awhile


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]

-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys -- and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV

_______________________________________________
Net-snmp-users mailing list
[email protected]
Please see the following page to unsubscribe or change other options:
https://lists.sourceforge.net/lists/listinfo/net-snmp-users