Re: Import External RRDs

Hey Marta,

to check if OpenNMS provides the graphing ability that you need,
setup a test instance of OpenNMS 15.0.2 or in a few days OpenNMS 16.
During the installation make sure to use RRDtool and not JRobin.
Add a few devices and check out the results of the datacollection.
Then you can have a look at "KSC-Reports" and the ops-board feature.
Additionally you end up with RRDs in the format that fits to OpenNMS.
That might be handy later in the process of making OpenNMS understand
your RRDs written by a different tool.

OpenNMS requires a few things to graph data from an RRD file.
Have a look at some of the graph.properties files. They include the
RRD definitions. Including the names of the track in the RRD file and
the way the tracks should be rendered.
You have to come up with graph definitions in OpenNMS that match the
file and track names of your external tool.
OpenNMS reads the RRD files from the filesystem following a fixed
structure based on Nodes and Interfaces of the nodes. You can check
that out on your test instance. This structure requires to have the
Nodes and Interfaces you want to graph in the OpenNMS inventory.
So get a list of the devices and feed it to OpenNMS via provisioning.
There is a tool that might help you there to read the nodes and
interfaces from your existing tool. Checkout OpenNMS Provisioning
Integration Server (PRIS).
If you manage to get your devices as nodes into OpenNMS and provide
some snmpgraph.properties that match the internal structure of your
existing RRDs, just link or copy them in the right folder.

Yes that are a few steps ahead... but it is a rare use-case.

If you have further questions around that topic, go for the
discuss-list not for the install-list.

If you are not already an RRDTool-Ninja checkout this workshop video:
http://ouce.opennms.eu/en/ouce2013/public/events/48

Regards

Markus

Am Thu, 7 May 2015 13:57:41 +0000
schrieb Marta Antosik <[email protected]>:

> Hi there,
> 
> I'm new to the OpenNMS but I would like to use it in my environment.
> The thing is that I have already the commercial system that collects
> data and store it in RRD files. In that case I would like to use
> OpenNMS more as graphing engine and I was wondering if there is any
> possibility to import those RRD files into OpenNMS without modelling
> all devices/topology.
> 
> If so, would the import process create a link between RRDs and
> OpenNMS or there would have to be some king of synchronization?
> 
> Thank you in advance.
> 
> Regards,
> Marta


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