On Thu, Feb 9, 2012 at 3:04 PM, BP9906 <[email protected]> wrote:
> Is it possible to have multiple start times for Syscheck?
>
> I tried
> <scan_time>05:00,11:00,18:00</scan_time>
>
> but the ossec agent complains about it.
> I'm going to try
>    <scan_time>05:00</scan_time>
>    <scan_time>11:00</scan_time>
>    <scan_time>18:00</scan_time>
>
> Just trying to find a happy medium here.
>
> The problem is that if I use frequency to every 6-7 hrs it causes a
> UDP storm from 30+ machines for syscheck data on top of the usual
> alert sending. I've maxed out the buffer size on my linux kernel,
> ossec server agent count is very high, and the server can handle it,
> just that there's so much that the ossec server doesnt read the buffer
> fast enough for the data coming through so I get intermittent results/
> data for the roughly 30 min window while all these machines send their
> syscheck results.
>
> It would be nice to be able to give syscheck a random 2hr window to
> the start time to reduce this chance, or to be able to stagger out the
> machines in separate agent.conf configs based on multiple start times.

I like the randomized start time idea. Something like "run every 6-ish
hours, but start 1-30 minutes after the 6 hour mark."

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