[Xymon] Xymon installation comes up with empty graphs

[Hauke Fath]

On Thu, 3 Nov 2016 10:49:50 -0700, Japheth Cleaver wrote:

Hi,

thanks for the quick reply.
 
> You'll probably want to check your httpd error logs for the 
> showgraph.sh/.cgi execution and see if there's anything unusual 
> happening. The RRD graphs are generated on the fly, so this would 
> point to a live error there.

Nothing there but a few "sendto failed" lines

2016-11-03 17:18:11.401220 Sendto failed: No buffer space available

which are probably due to unreachable clients.

> Are you getting blank loads or actual broken images?

Blank loads - they have appropriate y/t axis and legend, but never any 
data.

> Another option would be to add "--debug" to CGI_SHOWGRAPH_OPTS in 
> /etc/xymon/cgioptions.cfg.

This gives me

15533 2016-11-03 21:36:30.413517 Trying header/footer file 
'/usr/pkg/share/xymon/xymonhome/web/graphs_header' 
15533 2016-11-03 21:36:30.413953 Opening file 
/usr/pkg/share/xymon/xymonhome/etc/xymonmenu.cfg

above the (empty) graph, and 

15533 2016-11-03 21:36:30.415013 Trying header/footer file 
'/usr/pkg/share/xymon/xymonhome/web/graphs_footer'

below it. No 500 error, though.

-- This is probably unrelated, but xymond.log has a repeated

2016-11-03 21:40:28.037543 xymond servername MACHINE='i386' not listed 
in hosts.cfg, dropping xymond status

when there is no machine called 'i386'. There is one xymonclient on an 
OmniOS (solaris) machine, whose

% uname -a
SunOS Venediger 5.11 omnios-r151018-258cc99 i86pc i386 i86pc
%

has i386 - maybe the client picks the wrong field. But, as I said, 
probably not related to the blank graphs. Still searching for a clue...

Cheerio,
hauke

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