Graphing Text Strings

columnarius · Post by **columnarius** » Mon Jun 11, 2007 1:47 pm

I'm trying to find an example of how to graph text strings that change over time. Want to figure out a way to change the color of the line or alter the graph in some other visually meaningful way as the text changes.

Example would be to poll a router for its IOS version and graph that over time to compare against other stats.

Apologies if this is covered somewhere but I couldn't find it.

Thanks.

seedar2 · Post by **seedar2** » Sat Jun 23, 2007 7:24 pm

Hello,

I have exactly the same problem. How to place string information from SNMP like sysLocation, sysContact etc. on the graph but not in the title. And additional do anybody know how to place indexed string information like "cdp neighbours" (of course in Cisco's devices).

Regards

seedar

Post by **TheWitness** » Sat Jun 23, 2007 8:32 pm

Data query values are easy. Graph Template are not so easy. If you want a data query value, it goes like this:

|query_myXML_tag_name|

That's all.

TheWitness

seedar2 · Post by **seedar2** » Tue Jun 26, 2007 5:05 pm

Hello,

Thanks for your answer. Now it is very easy but only for indexed value (for example Interface description, IP address etc.) But how I can to place non-indexed value (operating system version, system location etc).

Regards

seedar

Post by **TheWitness** » Tue Jun 26, 2007 8:11 pm

That would be a feature request. Please submit it here: bugs.cacti.net Please be as specific as possible.

TheWitness

Post by **TheWitness** » Wed Jun 27, 2007 8:42 am

Before you go that far, look at the Cacti 0.8.6k release notes. Of course a Data Query works fine. I have thought of this for Graph Template based as well...

TheWitness

streaker69 · Post by **streaker69** » Wed Jun 27, 2007 9:31 am

TheWitness wrote:Before you go that far, look at the Cacti 0.8.6k release notes. Of course a Data Query works fine. I have thought of this for Graph Template based as well...

TheWitness

I'd like it to be able to pull out text strings just so that they can be used as a GPRINT on a graph.

Post by **TheWitness** » Wed Jun 27, 2007 11:26 am

How about from an arbitrary sql query?

TheWitness

streaker69 · Post by **streaker69** » Wed Jun 27, 2007 11:32 am

TheWitness wrote:How about from an arbitrary sql query?

TheWitness

That works too, just so that if the equipment has text that can be gotten via SNMP, it can be displayed. I've toyed with a couple different ways to do it, and so far, I haven't had much luck.

Edit:

I just went and looked at one of the things I was working with and had a thought.

Could it be possible to add maybe three or four SNMP queries to each device that could be defined as TEXT only queries? Like when you're setting up a new device, you could give it an OID you want it to poll and be a text only query. That could then be dumped into a new table (new table because of this idea) and then retrieved via a GPRINT on a graph template?

Does that make sense?

Post by **TheWitness** » Wed Jun 27, 2007 11:41 am

That's why I like the idea of a database select. Then, plugin developers could write templates that present their text information in the form of a gprint.

I am not sure exactly how I would do it. I'll have to talk to the development team.

Larry