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Re: [hobbit] creating custom graphs in hobbit

So i took your simpler way of getting the graph, however then i realized that the alerts that were being generated were still based on load -- is there any way to configure hobbit to turn red/yellow based on cpu utilization % rather than load?

thanks again for all your help, your dedication to OSS is inspiring!

Adam

Henrik Stoerner wrote:

On Mon, Sep 26, 2005 at 01:58:37PM -0500, Adam Scheblein wrote:


Recently i have been trying to create a custom script that grabs cpu utilization percentage, however when i try to get it to graph, it will not work... I have read the man page for hobbitd_rrd as well as the message thread "custom RRD data" in the hobbit mailing list archives, however i still cannot get it to work.

Here is my client script:


[snip]


$BB $BBDISP "status $MACHINE.$TEST $COLOR `date` - $STATUS Used CPU: $USED_CPU"



This sends a one-line status report with the text
green Tue Sep 27 23:11:49 CEST 2005 - ok Used CPU: 15



Here is my feeder script on the server side:


[snip]


# Analyze the message we got
cpu2=grep "^OK - " $FNAME | awk '{ print $11 }'



This line looks for "OK" at the beginning of a line (but it is
in the middle of the line, and in lowercase). So it probably won't
find anything, and $cpu2 will be blank.


If you do want to use an extension script for this, I'd suggest
sending in the status message like this:

$BB $BBDISP "status $MACHINE.$TEST $COLOR `date` - $STATUS Used CPU: $USED_CPU"

i.e. split it on two lines, and have just the "Used CPU: X"
on a line by itself. Then your feeder script should be

    cpu2=grep "^Used CPU:" $FNAME | awk '{ print $3 }'


However, there's a simpler way of getting the same result.
Assuming you already have the vmstat data - e.g. from the Hobbit
client, or by running the BB client with the LARRD add-on - you can leverage those data and generate the same graph by changing the [la] graph definition in your hobbitgraph.cfg
to this:

[la]
       TITLE CPU Utilitization
       YAXIS % Used
       -u 100
       -r
       DEF:cpu_idl=vmstat.rrd:cpu_idl:AVERAGE
       CDEF:pbusy=100,cpu_idl,-
       LINE2:pbusy#00CC00:% CPU busy
       GPRINT:pbusy:LAST: \: %5.1lf (cur)
       GPRINT:pbusy:MAX: \: %5.1lf (max)
       GPRINT:pbusy:MIN: \: %5.1lf (min)
       GPRINT:pbusy:AVERAGE: \: %5.1lf (avg)\n

This determines the CPU busy percentage as (100 - idle %).


Regards,
Henrik


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