Nov 22, 2009 5:39 AM
Nagios-like "Alert Histogram" - how to get it?
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There is a feature I would LOVE to see added to Zenoss.
I accomplished a limited version of this by creating an external data source (shell script attached). I then created a new Device template called NumEvents. My Data Source command template is simply:
/home/zenoss/query.sh -H $devname
The Data Point is a GUAGE, and I had to use a custom Create Cmd:
RRA:AVERAGE:0.5:1:600
RRA:AVERAGE:0.5:6:600
RRA:AVERAGE:0.5:24:600
RRA:AVERAGE:0.5:288:600
RRA:MAX:0.5:1:600
RRA:MAX:0.5:6:600
RRA:MAX:0.5:24:600
RRA:MAX:0.5:288:600
RRA:LAST:0.5:1:600
RRA:LAST:0.5:6:600
RRA:LAST:0.5:24:600
RRA:LAST:0.5:288:600
When graphing, I use the MAX data point, and changed the data value to: '%.lf' (This gets rid of all the decimal place crap)
This gives me a new PERF graph of the number of events every 5 minutes:
+1 - Yes, very nice workaround!! 
But need to be adapted to the different Linux-Distributions, because the path to mysql is hard-coded.
For example for the rPath-Virtual-Appliance in the line:
COUNT='/usr/local/zenoss/mysql/bin/mysql --skip-column-names ...
it must be change to
COUNT='mysql --skip-column-names ...
Another Tip, if you copy the file "query.sh" over windows or open it with a Windows-Editor you should remove LF/CR with this command as zenoss-user:
mv query.sh query.bak; tr -d '\r' < query.bak > query.sh
make it executable with:
chmod 754 query.sh
Then it works well
Regards
dbuck
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