RE: [Bubba-users] Changing interfaces

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F.Y.I. sent an email to the RRDTool mailing list and got a response.

RRD's logic works thus: If either of the srcs are NaN (No Value) then
the result of an addition between them is also NaN.  

The person included an example CDEF which will set a src to 0 if it's
NaN allowing the graph to be generated correctly.  I'm working on how to
apply this to BUBBA.

On Wed, 2003-05-21 at 20:07, Steven J. Surdock, PE wrote:
> Thanks for the hint on the &_debug.  I was wondering how to use that
> (manually putting print statements when needed is a drag.)
> 
> BTW, I have a messy version of the text based report working.  It works
> pretty hard to obtain the data, but it works.  I'm going to clean it up this
> weekend and add customer specific HTML email reports next week.
> 
> -Steve S.
> 
> -----Original Message-----
> From: bub...@li...
> [mailto:bub...@li...] On Behalf Of Todd A. Green
> Sent: Wednesday, May 21, 2003 5:05 PM
> To: ssu...@en...
> Cc: BUBBA Users
> Subject: Re: [Bubba-users] Changing interfaces
> 
> 
> Getting closer...
> 
> In the past I had only used the formulas to add interfaces that were both
> taking data.
> 
> I just happen to have (back in march) a case like your where we moved a
> connection from one interface to another.  When I setup the formula I get
> the same results as you (calcs, but no graph).
> 
> Thinking I might have broken the formulas at some point I added one that
> adds two interfaces that are currently being used.  That worked so that
> tells me this is something I hadn't seen before.
> 
> BTW It is possible to enable 'debug' mode by adding &_debug=true at the end
> of a particular CGI call.
> 
> One example would be to view the graph separatly (right-click and select
> 'view image' with mozilla).  You will then see the CGI call used to generate
> the graph.  By adding &_debug=true you will see a dump of a ton of data
> structures.  One of them looks like this:
> 
> $VAR3 = [
>   '/tmp/bubba-cache/bubba-564d3f81.gif',
>   '--title',
>   'ITC DS/3 (Combined) - March, 2003',
>   '--start',
>   1046584800,
>   '--end',
>   1049262900,
>  
> 'DEF:in0=/usr/local/bubba/data/mn/routers/cisco/c7206-1/interfaces/serial2_0
> /200303.rrd:in:LAST',
>  
> 'DEF:out0=/usr/local/bubba/data/mn/routers/cisco/c7206-1/interfaces/serial2_
> 0/200303.rrd:out:LAST',
>  
> 'DEF:in1=/usr/local/bubba/data/mn/routers/cisco/c7206-1/interfaces/serial1_0
> /200303.rrd:in:LAST',
>  
> 'DEF:out1=/usr/local/bubba/data/mn/routers/cisco/c7206-1/interfaces/serial1_
> 0/200303.rrd:out:LAST',
>   'CDEF:in_bits=0,in0,in1,+,+,8,*',
>   'CDEF:out_bits=0,out0,out1,+,+,8,*',
>  
> 'DEF:dummy=/usr/local/bubba/data/mn/routers/cisco/c7206-1/interfaces/serial1
> _0/200303.rrd:out:LAST',
>   'COMMENT:Interfaces:\\n',
>   'COMMENT:  DS/3 to IDG\\n',
>   'COMMENT:  DS/3 to ITC Deltacom\\n',
>   'COMMENT:\\n',
>   'COMMENT:                        Max                  95th Percentile\\n',
>   'COMMENT:             ',
>   'AREA:in_bits#00FF00:In',
>   'GPRINT:in_bits:MAX:  %8.3lf %sb/s ',
>   'HRULE:953978.166222225#000000:Current (in) ',
>   'COMMENT:   953.978 kb/s',
>   'COMMENT:\\n',
>   'COMMENT:             ',
>   'LINE1:out_bits#0000FF:Out',
>   'GPRINT:out_bits:MAX: %8.3lf %sb/s ',
>   'HRULE:3000000#FF0000:Contract     ',
>   'COMMENT:     3.000 Mb/s'
> ];
> 
> This you might recognize (if you've worked with RRDTool directly) is the
> array of commands sent to RRDs::graph.
> 
> Somewhere in here lies the problem.
> 
> I think I've found one potential issue, but it may be with my data.  The
> start time listed is actually Sun Mar  2 00:00:00 2003 instead of Sat Mar  1
> 00:00:00 2003.  I haven't looked into this one yet, but I suspect Daylight
> Savings Time as being the culprit here.
> 
> Anyway back to the issue of no data in the graphs.
> 
> My thinking is that RRDGraph maybe getting annoyed about having two
> datasources one which doesn't have data at the end of the request time
> period, and another that doesn't have data at the beginning.
> 
> I'm going to setup some scripts to plug these args directly into RRDGraph
> and see what it gives me.
> 
> Thanks again for the help.
> 
> 
> 
> On Mon, 2003-05-19 at 12:27, Steven J. Surdock, PE wrote:
> > That seems to have changed the 95th percentile calculation, but data 
> > for one of the interfaces is not presented on the graph.  I attached 
> > some gifs of what shows up...
> > 
> > I tried ordering the interfaces differently in bubba_menu.conf but it 
> > did not seem to make a difference.  It also did not change which 
> > interface was displayed.
> > 
> > -Steve S.
> > 
> > 
> > -----Original Message-----
> > From: bub...@li...
> > [mailto:bub...@li...] On Behalf Of Todd A. 
> > Green
> > Sent: Wednesday, May 14, 2003 4:19 PM
> > To: Steven Surdock
> > Cc: BUBBA Users
> > Subject: [Bubba-users] RE: Bubba
> > 
> > 
> > On Tue, 2003-05-13 at 13:41, Steven Surdock wrote:
> > > It appears the user list is a bit light on users;-(  I have a couple
> > > of quickies for you.
> > > 
> > > Is there an easy way to adjust the size of the image?  Ideally via
> > > RRD::graph and not just via HTML.
> > Check out my last response.
> > 
> > > 
> > > And we changed interfaces for a customer.  Is there a way for Bubba 
> > > to
> > > combine the data from two RRDs and show it on one graph?  Now I'm 
> > > getting two separate graphs (see attached).
> > Yes there is, it's called a formula.
> > 
> > Here's a sample from one of the example files included in the 
> > distribution.
> > 
> >   <formula id="billable">
> >     <description>Billable Interfaces</description>
> >     <default>0</default>
> >     <operation>+/switches/ionic-5500a/interfaces/3_24</operation>
> >     <operation>+/switches/ionic-5500b/interfaces/5_4</operation>
> >     <operation>+/switches/ionic-5500b/interfaces/5_15</operation>
> >     <operation>+/switches/ionic-5500b/interfaces/6_1</operation>
> >     <operation>+/switches/ionic-5500b/interfaces/6_12</operation>
> >   </formula>
> > 
> > This would go in the bubba_menu.conf file for the customer in 
> > question.
> > 
> > > 
> > > Thanks yet again!
> > No, Thank you!
> > 
> > BTW I haven't forgotten about the previous request dealing with 
> > text-based reports.  That one is significant enough that I'm waiting 
> > on 0.0.8 to implement it.  Got myself stuck on some ACL stuff for the 
> > new portal (bubba_menu.cgi replacement).
> > 
> > > 
> > > -Steve S.
> > > 
> > > -----Original Message-----
> > > From: Todd A. Green [mailto:sla...@aw...]
> > > Sent: Tuesday, April 29, 2003 11:39 AM
> > > To: Steven Surdock
> > > Subject: RE: Bubba
> > > 
> > > 
> > > I've released 0.0.7pre3 on SF with the conversion fixes.
> > > 
> > > Thanks for the help
> > > 
> > > ... <snip>
-- 
Todd A. Green <sla...@aw...>