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Graphs for ipmitool
-------------------
This is a set of shell-scripts to quickly create a webpage with pretty graphs!
Prerequisites are a webserver with cgi-bin support and RRDtool, a data
collection and graphing utility you can get here:
http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/
First, decide on a directory where to store the RRDtool database files and make
sure it exists. The user that will run the cronjob to collect updates must have
write permissions in this dir.
Next, you'll need to edit some variables at the top of each script.
Common to all scripts:
hostname Override this if you are collecting data from a remote host,
or if the $HOSTNAME variable is incorrect.
ipmi_cmd Command line used to call ipmitool. Default is to collect
data from the local server using OpenIPMI.
If you want to collect data from a remote host, add the
-I lan, -H, -U and -P options as necessary.
BIG NOTE! I do not recommend using remote data collection since
you'll have to store the password in the script. If you do,
make sure unauthorized people can't read or execute the scripts
or they'll be able to wreak havoc on your server.
rrd_dir Enter the dir where to store the RRDtool database here.
Now you can get the data collection going. Run create_rrds.sh to create the
RDDtool database, you'll find one .rrd file per sensor in the designated dir.
Add a line to your crontab that executes collect_data.sh every 5 minutes.
Something like this:
*/5 * * * * /usr/local/bin/collect_data.sh
If you are a Solaris user you'll have to write the more verbose:
0,5,10,15,20,25,30,35,40,45,50,55 * * * * /usr/local/bin/collect_data.sh
Finally it's time to create the webpage, begin with editing some more variables
in the create_webpage.sh and/or create_webpage_compact.sh scripts:
rrdcgi Full path to the rrdcgi executable.
img_dir Directory to store the graph images. This path must be within
the document root and writable by the web server user.
Example: /usr/local/apache2/htdocs/images/graphs
web_dir Relative path of the URL where the images will show up
on the web server.
Example: With the img_dir path above the corresponding web_dir
would be /images/graphs
graph_width Size of the graph area in pixels (excluding title, legends etc.)
graph_height
graph_daily Decide which of daily, weekly and monthly graphs you want
graph_weekly included on the page.
graph_monthly
Finally run the create webpage script and store the output as a cgi-script and
don't forget to make it executable.
Example:
create_webpage.sh > /usr/local/apache2/cgi-bin/my_ipmi_graphs.cgi
chmod 755 /usr/local/apache2/cgi-bin/my_ipmi_graphs.cgi
Now you can surf to http://my.server.com/cgi-bin/my_ipmi_graphs.cgi and enjoy!
The difference between create_webpage.sh and create_webpage_compact.sh is that
the first script displays sensor thresholds in the graphs. The second script
collects all sensors that measure the same unit into the same graph thus
producing a lot fewer graphs.
Note, RRDtool sometimes scales the graphs such that the sensor thresholds
fall outside the visible area.
Happy graphing!
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