[hobbit] Graphs not working on individual views, but working on trends view

doctor at makelofine.org wrote:

On Wed, 10 Mar 2010 11:31:31 -0800, "Mark Stoltzfus" <mark.stoltzfus at pmigroup.com> wrote:

...

Hi, we just did a forklift upgrade from our old Hobbit servers to two brand new boxes running Xymon 4.2.3, and for the most part, it's been a seemless transition. We noticed some strange behavior, though, with the graphs. The graphs under disk, cpu, and memory don't show up, but under trends, they show up just fine. I took a look at the different shortcuts, and they look very similar to me, with the differences highlighted in red:

Link copied from "disk" section: https://monitor.us.corp.pmigroup.com/xymon-cgi/hobbitgraph.sh?host=wal-d dbs-01.us.corp.pmigroup.com&service=disk&graph_width=576&graph_heigh t=120&first=1&count=3&disp=wal%2dddbs%2d01%2eus%2ecorp%2epmigroup%2ecom& graph=hourly&action=selzoom

Link copied from "trends" section: https://monitor.us.corp.pmigroup.com/xymon-cgi/hobbitgraph.sh?host=wal-d dbs-01.us.corp.pmigroup.com&service=disk&graph_width=576&graph_heigh t=120&first=1&count=3&disp=wal%2dddbs%2d01%2eus%2ecorp%2epmigroup%2ecom& nostale&color=green&graph=hourly&action=selzoom

Any ideas as to what's going on? I did find some old posts from Henrik about troubleshooting graph generation, but the case he was dealing with there was where the graphs wouldn't generate at all. In this case, the rrds are all there and the graphs are being generated, just not in all views.

Thoughts?

Mark

Hi,

I got different issue with graphs, but I think my problem should be related to your comment : " I did find some old posts from Henrik about troubleshooting graph generation, but the case he was dealing with there was where the graphs wouldn't generate at all."

It's worth checking hobbitgraph.cfg if you have added a number of your own custom graphs. The FNPATTERN operator is doing a regexp match, but in some cases the default pattern definition is very loose.

For example, I'd added a bunch of devmon based system health check reporting stuff which generated file names like /var/lib/hobbit/rrd/HOSTNAME/temp.memory11.rrd These were causing the memory graph to die because it was attempting to query non-conformant RRDs for the particular graph. Solved by tightening the regexp definition as below (adding ^ in front, which means the filename has to start with memory, not just have it as a substring).

[memory] FNPATTERN ^memory.(.+).rrd TITLE Memory Utilization

Note that the FNPATTERN is not used when deciding if there are any RRD files to use to display a graph at all on the test status page. It just seems to glob TEST*.rrd to count the number of files to decide how many lines to display on the graph for TEST. This is with 4.2.3.

David.

-- David Baldwin - IT Unit Australian Sports Commission www.ausport.gov.au Tel 02 62147830 Fax 02 62141830 PO Box 176 Belconnen ACT 2616 david.baldwin at ausport.gov.au Leverrier Street Bruce ACT 2617

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