How to customize a check graph?

[neilyoung]

This is my graph:

It is built from a combined display of 6 integers over time. I can’t really cope with “average” and “maximum” and stuff, since these values are just integers. Also - the round flanks of the graph don’t make any sense to me. Each value cannot be a float, that doesn’t make sense.

For instance: At around 18:04 the system encountered 1 for all counters, except “Recorders”. The graph looks like as if this appearance followed some mathematical function (what it didn’t). They all were 0 then 1 the 0 again.

How can I picture this in the graph? (Besides of the question, how to make the overlaps more visible?)

[mike1098 (Michael FRANK)]

I assume your graph is showing the average.
Instead I would try to show the maximum values.
You may use custom graphs but might be also possible in the graph definition.

[neilyoung]

Yes, this might be the case. I’m running the free version of CMK, I think there is no way to configure the graph.

Maybe there is one in the metrics definition?

Looks like so at the moment:

metric_info["rooms"] = {
    "title": _("Rooms"),
    "unit": "count",
    "color": "#334FFF",   # blue
}

metric_info["controllers"] = {
    "title": _("Controllers"),
    "unit": "count",
    "color": "#E3FF33",   # yellow
}

metric_info["publishers"] = {
    "title": _("Publishers"),
    "unit": "count",
    "color": "#E633FF",   # magenta
}

metric_info["subscribers"] = {
    "title": _("Subscribers"),
    "unit": "count",
    "color": "#33FF64",   # green
}

metric_info["mediafeeds"] = {
    "title": _("Mediafeeds"),
    "unit": "count",
    "color": "#FF9C33",   # orange
}

metric_info["recorders"] = {
    "title": _("Recorders"),
    "unit": "count",
    "color": "#33FFFC",   # turk
}


graph_info["combined"] = {
  "title": _("Combined Graph"),
  "metrics": [
    ("rooms", "-line"),
    ("controllers", "line"),
    ("publishers", "line"),
    ("subscribers", "line"),
    ("mediafeeds", "line"),
    ("recorders", "line"),
  ]
}

[mike1098 (Michael FRANK)]

Yeah docu is not complete and dont discuss all options.
@Tribe29 Please improve

Writing your own check plug-ins

I found a default metric which might match you needs. Try to copy to local structure and attach to your needs.

lib/check_mk/gui/plugins/metrics/licenses.py

Myself didnt workes so much with this stuff so I cannot help so much.

I hope it helps to solve your problem.

[neilyoung]

Hmm. No that literally doesn’t change much.

I have entered one room, fired up a publisher, followed by a subscriber. One minute later I got this:

Then I added a second subscriber. One minute later the graph told me, that I would have “1.8” subscribers running (sigh!). After two minutes (after the following update) it at least made more sense, but honestly…

Meanwhile it looks like so:

But the averaging and the general curved display for discrete values puzzles me much

[mike1098 (Michael FRANK)]

@mike1098

Instead I would try to show the maximum values.

Probably Last may be the better value.
Sorry I cannot help further with metric definition files. I just can browse through official code but have no time yet to play with it.
Looking forward to see your solution.

[neilyoung]

Thanks for your patience, but this doesn’t all change anything. I also found the mqtt metrics coming very close to what I have in mind, but I don’t have an mqtt server which I could observe.