On Wed, Apr 16, 2014 at 3:51 PM, Imrane DESSAI <dessai.imr...@gmail.com>wrote:
> Congrats !!!!
>
> What is snapshot about ?
>
That's quite simple in fact. I did have lot of case at work where my boss
asked me "why there was such a big load at 3AM, this did crash XXX batch".
And the problem is that I did have the load average and other performances
values, but no other analysis clues.
What did I need on this time? just a dumb "ps aux" launched at 3AM during
the load average warning/critical phase. And that's "spanshots" are about:
they allow you to launch some commands based on some criteria like "go into
warning" and with large ouput (like a full ps output). This output will be
exported to the broker that will be able to save it somewhere (file, mongo,
...). Then it's quite easy for an UI to go query it and display it aside
your logs when you try to find what did ask so much load :)
Jean
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