Re: Would a DOS on dovecot running under a VM cause host to crash?

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Checked the main logs. No go. Didn't check qemu logs. Will do that.

I'm starting to think it was the power as when I turned of the UPS as a test. The server shutdown as well... Will get that fixed.

Cheers,

Hugh

Stefan Hajnoczi <stefanha@xxxxxxxxx> wrote:

>On Fri, Jun 21, 2013 at 10:27:07AM +1200, Hugh Davenport wrote:
>> The "attack" lasted around 4 minutes, in which there was 1161 lines
>> in the log for a
>> single attacker ip, and no other similar logs previously.
>> 
>> Would this be enough to kill not only the VM running dovecot, but
>> the underlying host
>> machine?
>
>Have you checked logs on the host?  Specifically /var/log/messages for
>seg fault messages or Out-of-Memory Killer messages.
>
>It's also worth checking /var/log/libvirt/qemu/<domain>.log if you are
>using libvirt.  That file contains the QEMU stderr output.
>
>Stefan
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