I believe Malcolm is correct... Here is the section of the xymonserver.cfg file that deals with the buffer sizes :

Maximum message size buffers (in KB)

These are commented out by default, you should only change them if you

have systems sending large status-messages or otherwise need to handle

large messages. Please read the description in xymonserver.cfg(5) first.

#MAXMSG_CLIENT=512 # clientdata messages (default=512k) #MAXMSG_CLICHG=$MAXMSG_CLIENT # client change messages (default=MAXMSG_CLIENT) #MAXMSG_STATUS=256 # general "status" messages (default=256k) #MAXMSG_STACHG=$MAXMSG_STATUS # status change messages (default=MAXMSG_STATUS) #MAXMSG_PAGE=$MAXMSG_STATUS # page messages (default=MAXMSG_STATUS) #MAXMSG_ENADIS=32 # enable and disable control messages (default=32k) #MAXMSG_USER=128 # "user" messages (default=128k) #MAXMSG_DATA=256 # "data" messages, if enabled (default=256k) #MAXMSG_NOTES=256 # "notes" messages, if enabled (default=256k)

Dave

On Fri, May 29, 2020 at 5:15 PM Malcolm Hunter <malcolm.r.hunter at gmail.com> wrote:

Hi

You may be hitting the MAXMSG_DATA limit of 256K ? try increasing it in xymonserver.cfg. I would have thought you?d have seen xymond go yellow as well and show ?Oversize? errors.

Malcolm

Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

*From: *Prevost Eric <eric.prevost at volvo.com> *Sent: *29 May 2020 21:56 *To: *xymon at xymon.com *Subject: *[Xymon] Sorry to bother you ... But I was wondering if your could possibly Help us ...

(2nd Sending as I had forgotten a Screenshoot for the Value I changed to 10000 in the Powershell File, so sorry about this)

Hello ?

Sorry to bother you ... But I was wondering if you could possibly Help us ... with a weird Issue we started having this Week ()

If so here it is:

At some point for the past couple of night, we started receiving the following ALERT:

            &red *XymonPSClient: No matching service* - want

started/automatic

But when I look on the Windows Server, under the (Windows mmc) Service window, it is shown as Started ? But Xymon doesn?t see it as such L

Now what is weird is that the ClientLog does list it, but under the SVCS button ? I don?t see all of the Services almost all but the last portion is missing (depending on how many there are ... the more there are I guess the more I would be missing) ? So I was thinking that it might be related to some sort of a VARIABLE Type or Buffer Size (Limitation) that is just not big enough ... but when I looked at the ?xymonclient.ps1?, there are way too many lines for me to understand all of it an try to figure out what I would need to change :$

Also I only fiddle a Little bit in PowerShell so my skills are at best at the Beginner Level ?

Thus this is why I am taking a Chance sending you this Email

Here are a few Screenshot to try to show you the Issue and what I saw there leaning me towards the Incorrect Variable Type or Buffer Size

[image: cid:image001.jpg at 01D635D0.096C71E0]

[image: cid:image002.jpg at 01D635D0.096C71E0]

*As you can see here, the last Line seems to be Incomplet (cuts in the middle) ? That is Compared to the Content of the Client Log screen to the right ? thus making me believe that the Data is bigger than what it can Hold/Process ? thus it disregards anything coming after that !*

I am hoping that this is something that you guys might have seen before and know of the Way to Fix it

Now I did try to modify the following Value from 5000 to 10000 (a shot in the Dark), but it did not seem to Help resolve the Issue:

FYI here is the size of the Client Data File (when the Issue was present):

[image: cid:image004.png at 01D635D1.F28C0D30]

Again I was thinking of a possible 512kb limitation that could possibly Explain this Issue

Anyways I will appreciate any Assistance or Insight you could provide a newbie to Xymon

Thanks in Avance for your Help

Have a Great Day & Week-End

*Best Regards*

*Eric Pr**?**st *

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