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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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