Nagios Support Forum

Hello,

i'm getting questions why Nagios is not showing a trend for certain services, eg disk usage. I read some posts this is possible with pnp4nagios. Is this something that's on the roadmap for Highcharts too? As trend lines are showing in competing monitoring products, I get some pressure to get this implemented.....
Ideally a trend line should be visible on the generated Highcharts. If we would then also be able to alert when a trend passes a certain threshold, it would be perfect.
Any thoughts or advice around this topic is welcome. For now the only option I see is to create a wrapper script around the command to monitor disk usage and calculate the trend myself somehow from the rrd's. As this would take some time to implement, I was hoping this feature would be on the roadmap somewhere?

Grtz

Willem

You can view the "trends" by clicking on the "Capacity Planning" tab under "Host/Service Status Detail" page however setting up warning/critical thresholds (alerting on the predicted value) hasn't been implemented yet.

Hey Ludmill,

I'm not sure but I would think the capacity planner and trends aren't exactly the same? With trend I would mean a counter which displays for example the growth of usage between the last and the current check. I'll see if I can get some useful examples to compare the two and will pm them to you.
For the usage we have some MS BI servers which grow for example 200 MB / 5 minutes. If the growth would suddenly exponentially grow to 2GB / 5 minutes, people would like to get an alert, even if the disk has enough free space. Maybe I don't mean trend but 'average growth'? (sorry I'm not statistician)

Grtz

Willem

You mean like this?

http://www.highcharts.com/plugin-regist ... regression

I mean for the highcharts display of it (still would have to be coded into XI), it doesn't really help for the checks/alerts though.

Hey Ssax,

Thank you for this link. That are some very nice Highcharts. It seems a SMA (Simple Moveing Average) or the EMA (Exponential Moving Average) is more what I'm looking for then the trendline in the example, as the trendline seem not really curved. I understand something like this would not really be easy to implement. Certainly in combination with alerting. And then there is also the fact that some people would want a SMA or EMA of 1 hour interval and other of a 1 day interval. I'll see if I can post some screenshots of trendlines in PNP4Nagios. (where I got the idea from)

Grtz

Willem

Sounds good, I'll refer to this topic in the feature request once you've posted the examples.

Hello,

Please check the three screenshots attached. The 'trend' line in the third screenshot shows what I meant to make a feature request for. It shows very clear that for example in hte beginning of May there was a very high trend compared to the 'normal' trend. I hope this explains what I initially meant for the fr.

Grtz

Willem

I have submitted a feature request for you.
Thank you for your feedback.

Ok, please close this thread. Thanks.