[mrtg] Re: 14All newbie questions
Rainer Bawidamann
Rainer.Bawidamann at rz.uni-ulm.de
Wed May 3 10:40:07 MEST 2000
In article <Pine.SO4.4.05.10005020917110.3466-100000 at slowpoke.sb.west.net>,
jay at west.net (Jay Hennigan) writes:
> 1. It looks as if 14All generates the index page merely by calling the
> 14all.cgi . Is there a way to segment this so that I can have multiple
> smaller index pages, for example one per router? I don't want to draw
> the daily small graphs for every interface on the system every time I
> look at MRTG, but would not mind seeing all of the interfaces on a
> specific router. The "Directory:..." keyword seems to be related to
> this but the documentation and syntax escapes me. Clickable titles with
> the router names on the main page would be nice.
Two things:
1. In mrtg "Directory[..]" is used to put the rrd files in different
directories. In 14all it is used to group targets. The start page of
14all is a list of directories and the targets without a "Directory".
Don't forget to move the rrd files if you change a Directory entry for a
target!
2. You can write
UseRRDTool[...]: indexgraph: 0
in the config file to disable indexgraphs for the given targets.
> 2. Presently we run several instances of MRTG to stagger the load
> so that all of the SNMP polls can finish within five minutes. This
> is done with multiple .cfg files, one for each group of routers.
> It appears as if 14All wants a single .cfg file to reference. How
> do we reconcile this?
14all.cgi accepts a CGI parameter "cfg=<configfile>". Create a html page
with links to 14all like this:
http://host/cgi-bin/14all.cgi?cfg=/opt/netman/config1.cfg
for every config file you have. (No this is not very comfortable - but
14all started as a hack ...)
> 3. Is there a setting to have the graphs (selectively would be nice)
> start at zero, as opposed to the expanded scale we're seeing with
> RRDTool? I'd like the traffic graphs this way, but the expanded
> scale is great for things like temperature.
What do you mean with expanded scale? Does your graph not start at zero?
> 4. Likewise, is there a setting to draw fewer grid lines in the Y
> axis? I've gotten used to the appearance of the MRTG graphs and
> RRDTool's look different...
RRDTool has several options to configure the y grid (rrdgraph(1)). 14all
uses '--alt-y-grid'. The option '--alt-autoscale-max' might make sense.
you could add the line
push @args,'--alt-autoscale-max';
after line 266 (version 1.0p10).
> 5. Does the "Interval: " keyword in the .cfg want minutes or seconds?
> What affect does this have on the operation? We run from cron every
> five minutes.
Minutes. When using 14all/rrdtool (UseRRDTool...) it affects the
creation of rrd files. It does not affect how often data is collected
and stored (cron is responsible for this).
Rainer
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Rainer.Bawidamann at rz.uni-ulm.de
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