MRTG to Cacti

[Guest]

Hi,

I have just installed cacti and would like to import all my MRTG data over. is this possible??

Thanks

[blobon]

Hi guys,

that was me, didnt know you had to log in after registering . most forums log you in automatically after registering.

[Kudithipudi]

I don't know of a easy way. But here is something that you can try.

1) Create all the required graphs in Cacti using the web interface.
2) Get the names of the rrd' created by Cacti
3) Export data from your MRTG rrd' by using "rrdtool dump RRD_FILENAME > XMLFILENAME.XML"
4) Import data from the XML file to the rrd that Cacti created "rrdtool restore XMLFILENAME.XML CACTI_RRD_FILENAME.RRD"

If you have all your MRTG rrds and Cacti rrds ready, maybe you can just script the above steps and do it in an automated way.

Also please make sure that you are exporting and importing as the user that runs cacti (usually cactiuser)

Hope this helps.

- V.

[craigeherring]

This works.... I only had to do one more step:

In the XML page I had to replace 2 lines... Right in the begining in the
<ds> >> <name> tag the names must be the same.

I had MRTG call the names ds0,ds1,ds2,... but cacti calls them based on the name you call the device.

[svenXY]

Hi there,

I was hoping there was a way to use existing rrds in Cacti. I have MRTG running that creates (and will update) my rrds. I can get cacti to create a graph from one of them by creating an inactive Data source and provide the path to the rrd.

But how would I do that for ~50 hosts? How can I create a template that will read the rrd and then just use the template?

Any ideas?

Thanks,
Sven

[TheWitness]

I suggest migrating to Cacti. However, to get your RRD's into Cacti and to make graphs, it is best to start with Hammer, Nails, Brick, and Mortar.

In other words, if you can code, best start now and contribute to the overall community what you create. If it's good, it may even make it into the mainline project.

TheWitness

[monachus]

This isn't perfect, but it works. I just spent the weekend snarfing all our old MRTG/RRD data and loading it into Cacti.

What I did was create the devices and graphs and stuff as if they were new data. I then exported the MRTG data and imported it into Cacti. I like Cacti's intelligent handling of datasource names, so I had to write something that would change ds0 and ds1 into something that cacti was expecting. You'll have to change cactiuser inside the script (it chowns after import), but everything else is a flag.

It would also work if you change a datasource name within a Cacti rrd and don't want to manually export, hack, and import.

Enjoy!