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xymonproxy messages getting truncated

4 messages in this thread

list Heather Keen · Thu, 6 Dec 2012 11:46:55 +0000 ·
I'm have several xymonproxy servers (over the other side of the world)
which send data to my main xymon server.  The trouble is that the data
received by the xymon server is sometimes getting truncated, and thus it
reports false red alerts - usually with procs.  The xymon server itself
does NOT report that it's getting truncated messages, and nor does the
xymonproxy.

I suspect that the network connection between the proxy and the main server
is being dropped and some of the data is being lost, but the failed data is
not being resent.

Has anyone got any ideas what can be done about this please?  I'm getting
fed up with alerts saying that my servers are running no procs at all when
they blatantly are :).

Cheers,
Heather
list Heather Keen · Thu, 6 Dec 2012 13:01:35 +0000 ·
One thing I have noticed is that when this happens my main server often
shows "Multi-source statuses" for the affected clients - showing "procs:
reported by <client IP> and <proxy server IP>", whereas when its working
properly it doesn't.

Any ideas anyone?
quoted from Heather Keen


On 6 December 2012 11:46, Heather Keen <user-b65ed48f7f21@xymon.invalid> wrote:
I'm have several xymonproxy servers (over the other side of the world)
which send data to my main xymon server.  The trouble is that the data
received by the xymon server is sometimes getting truncated, and thus it
reports false red alerts - usually with procs.  The xymon server itself
does NOT report that it's getting truncated messages, and nor does the
xymonproxy.

I suspect that the network connection between the proxy and the main
server is being dropped and some of the data is being lost, but the failed
data is not being resent.

Has anyone got any ideas what can be done about this please?  I'm getting
fed up with alerts saying that my servers are running no procs at all when
they blatantly are :).

Cheers,
Heather
list Ryan Novosielski · Thu, 6 Dec 2012 08:45:55 -0500 ·
You sure you're not running into the max message size (which I recall was 32k but that could be what I changed it to)? It's configurable somewhere obvious (I believe server-side).
quoted from Heather Keen


From: Heather Keen [mailto:user-b65ed48f7f21@xymon.invalid]
Sent: Thursday, December 06, 2012 06:46 AM
To: xymon at xymon.com <xymon at xymon.com>
Subject: [Xymon] xymonproxy messages getting truncated

I'm have several xymonproxy servers (over the other side of the world) which send data to my main xymon server.  The trouble is that the data received by the xymon server is sometimes getting truncated, and thus it reports false red alerts - usually with procs.  The xymon server itself does NOT report that it's getting truncated messages, and nor does the xymonproxy.

I suspect that the network connection between the proxy and the main server is being dropped and some of the data is being lost, but the failed data is not being resent.

Has anyone got any ideas what can be done about this please?  I'm getting fed up with alerts saying that my servers are running no procs at all when they blatantly are :).

Cheers,
Heather
list Martin Ksellmann · Thu, 06 Dec 2012 15:06:53 +0100 ·
Hi Heather,
quoted from Ryan Novosielski

On 06.12.2012 14:45, Novosielski, Ryan wrote:
You sure you're not running into the max message size (which I recall
was 32k but that could be what I changed it to)? It's configurable
somewhere obvious (I believe server-side).
I had problems with the message size due to many connections in netstat
and processes in ps.
I added the following 3 lines to xymonserver.cfg:

MAXMSG_STATUS="3145728"
MAXMSG_CLIENT="3145728"
MAXMSG_DATA="3145728"

Cheers,
Martin