Hello,

(A bit long, sorry...)

Using Xymon 4.3.28 from the Terabithia RPMs.

I've been adding a few new client servers to our Xymon monitor. However, I have noticed today that for some graphs no graph title appears. The graph appears, the values appear (on the graph) and the graph lines appear. Just no title.

It seems that this affects those client servers which are configured in the hosts.cfg file with a NAME: entry. For example:

10.11.12.13 server1 # NAME:"server1 (pre-prod web)" testip !ftp ssh...

(I don't use FQDNs for the server names.)

It seems that entries we have added to the 'graphs.cfg' file, and where the TITLE uses the 'exec:' function have the problem. (See the 'graphs.cfg' man page for info about using 'exec:'.) So, for example we have in graphs.cfg:

======= [memory] TITLE exec:/bin/sh -c 'echo Memory Utilisation - $2' YAXIS % Used ...

Debugging the graph output (by setting some variables) using 'xymoncmd showgraph.cgi --debug >/tmp/graph.out' shows:

=======

xymoncmd showgraph.cgi --debug >/tmp/graph.out

sh: -c: line 0: syntax error near unexpected token (' sh: -c: line 0: /bin/sh -c 'echo Memory Utilisation - $2' server1 (pre-prod web) memory "14/Apr/2019 - 16/Apr/2019" "memory.rrd"'

As can be seen the parameters passed to 'showgraph.cgi' should include the hostname, but it includes the hostname and the NAME: entry. The shell barfs on the parentheses. If I run the above shell command directly but quoting the whole server name, then it works fine:

====== $ /bin/sh -c 'echo Memory Utilisation - $2' "server1 (pre- prod web)" memory "14/Apr/2019 - 16/Apr/2019" "memory.rrd" Memory Utilisation - 14/Apr/2019 - 16/Apr/2019

This seems to be a bug. If the hostname parameter being sent to showgraph includes spaces (because the NAME: entry is included), then the whole parameter should be quoted.

I suspect that if the NAME: entry itself has double-quotes in it, then the graph title could be a bit messed up. If in the above example I changed the parentheses to '=' signs, then no quoting is required but the title comes out as 'Memory Utilisation - web='. Perhaps in those instances, as the man page for graphs.cfg suggests, a local script is run instead to do the processing and dig out the correct graph title.

It's late now, and I'm going to be busy leading up to the Easter break, but if I can I'll take a look and see if I can get a patch for the code. I'm suspecting it should be a one-line - if the total hostname parameter has a space then quote the whole thing.

John.

-- John Horne | Senior Operations Analyst | Technology and Information Services University of Plymouth | Drake Circus | Plymouth | Devon | PL4 8AA | UK

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