Using the Alias (IF-MIB) in a LABEL

[skeffling]

I've tried, but can't seem to find a way to use the interface alias as collected by Cacti as the label on a node, I was thinking this would work, but didn't
LABEL {node:this:alias}

Is there a way?

(Maybe a way to limit the number of characters displayed (concat it) would be ace too!

[Atreides]

Hello,
Using this code :

NODE link-ra-gi2
LABEL {node:this:snmp_in_raw}
LABELOFFSET E
LABELOUTLINECOLOR none
TARGET snmp:{node:this:community}:{node:this:ip}:.1.3.6.1.2.1.31.1.1.1.18.{node:this:interface}:-
POSITION 660 443
SET community test
SET ip 172.25.232.33
SET interface 3

Will graph the description you have on that specified interface. I think is what you want.

[Howie]

Or, if you are already using cacti traffic data for that interface in your map (e.g. for a link connected to this node), then you can either use the dsstats: plugin or enable poller_output support ("SET rrd_use_poller_output 1" at the top of the map file). Both of those take a couple of polls to get going, but after that they will automatically populate a bunch of data as new variables, taken from the Cacti snmp cache.

In theory, it should run a bit faster than reading rrd files the normal way, too.

There's more description of the variables and poller_output mode in the manual:
http://network-weathermap.com/manual/0. ... s.html#rrd

So after that, you'd be able to use:

LABEL {link:relatedlinkname:cacti_ifAlias}

where relatedlinkname is the link that is using the traffic stats for the relevant interface.

[skeffling]

Thanks Howie, LABEL {link:relatedlinkname:cacti_ifAlias} is what I was after!

Is there a way con concat the string so as to make it a fixed number of characters long?

[Howie]

The formatting bit on the end, that is normally used for numbers, is passed straight through to PHP's sprintf() function, if it's not for %k or %t. So you can use the stuff documented here. It's not very intuitive for strings, but I got this to work:

LABEL {node:this:blahblah:%-0.10s}

To get a left-justified string of 0-10 characters, padded with spaces.