I got an email from a colleague asking if I had any ideas for a customer need of presenting CPU busy across a set of systems. He wanted both average and percentile values over a specified timeframe. In his case it was NetApp cDOT storage array nodes, but the concept could be applied to whatever group of systems you happen to be interested in. I hadn’t yet used the repeat function added in Grafana 2.
I’m pleased to announce that NetApp Harvest is now posted to the NetApp ToolChest! NetApp Harvest is a data collector that fetches a wide set of performance metrics from NetApp cDOT and 7-mode storage systems, and capacity info from Unified Manager 6+, and posts it to an open-source Graphite metrics server. It also imports 19 dashboards containing over 500 graphs into Grafana to make viewing it all a snap. I am just thrilled with the results and I hope you are too.
The open source metrics software Graphite is brilliant. To get it up and running however is not so. The ‘official’ documentation is quite generic, and the packaged versions (on EPEL and via PIP) have their own issues on some Linux flavors. So I usually end up searching Google to hopefully find a working recipe for the Linux flavor of the day on someone’s blog. And when I’ve done that invariably it still doesn’t work.
Back in 2012 when NetApp first added SAN protocol support to clustered Data ONTAP I created a short video to show how easy and non-disruptive it is to move a volume (containing one or more LUNs) around in a cluster. Although a bit dated, the feature is as powerful as ever! From an operational perspective being able to move data without impacting users or reconfiguring clients is huge. If you want to re-balance for capacity or performance (including from spinning disk to hybrid to all-flash!