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Dave_Lee's avatar
Dave_Lee
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6 months ago

Extracting datapoints via API

Hi all I wonder if anyone else has found a good way to pull metric data out of LM into other systems?  I've been having a play and have something working.  My code is doing this: Query the API for...
  • Dave_Lee's avatar
    Dave_Lee
    6 months ago

    Using a report worked for me.  I create 3 different Resource Metric Trend reports for CPU, RAM, disk utilisation.  Scheduled them to run daily to generate a CSV report.  I've got about 600 servers in there at the moment, so was a few thousand rows in the Volumes report, which seems to run fine as a scheduled report and only seems to take a minute or two to run.

    I have my script call the /report/links/{reportId} endpoint, then download the most recent CSV and process that data.  This is far quicker than iterating through all the API calls needed to gather the data.

    The most granular you can go is 2 hours of data, so I'm able to get the average for each data point over the 2 hours before the report was run.

    Report frequency is 1 day at the most, but I found that I could reschedule the report from the API as well.  So, if I have the script run just after the report, it could get the average for the last 2 hours then the script can reschedule the report to run again in 2 hours.

Dave_Lee's avatar
Dave_Lee
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I had a play with using a report to pull data, but LM refused to run it as there would be >3200 instances returned and there seems to be a maximum of 500 instances in a report.

I could look at a dashboard to display the most recent data, but don't those have a maximum of 500 rows as well?

Anonymous's avatar
Anonymous
6 months ago

Check with support to make sure that limitation exists in the report. I didn't know that was there. That limit might only be in adhoc (run now) reports, so scheduling the report may be a way to get around it.