Hung server
The Doctor
doctor at doctor.nl2k.ab.ca
Fri Feb 10 00:07:19 UTC 2017
On Fri, Feb 10, 2017 at 12:46:58AM +0100, Polytropon wrote:
> On Thu, 9 Feb 2017 16:21:50 -0700, The Doctor wrote:
> > Question? I s there a way of detecting why a server
> > hangs?
>
> Can you be more specific?
>
>
>
> > Within the last month my Primary Server
> > has been going into infinity mood as like to
> > call it for about 2 hours at a time.
> >
> > No signal can get through.
>
> So you're observing the "networking aspect" of that server?
> Do you have a non-network connection (direct console, serial
> line, IPMI or something like that) that you can examine?
>
USB only. I could adapt a serail but mostly USB.
>
>
> > Is this a kernel or app issue?
>
> Could be even more, for example a firewall issue. A system
> completely hanging often indicates a lower level problem,
> for example related to the kernel or a device driver, but
> without proper diagnostics, it's really hard to tell. As I
> said, if everything you can observe happens on the "network
> aspect", it could as well be a firewall (of the server, or
> _infront of_ the server) that just blocks traffic while the
> programs the server runs keep working as intended...
>
Hmm!! Ahead of the server is L3 Switch.
>
>
> --
> Polytropon
> Magdeburg, Germany
> Happy FreeBSD user since 4.0
> Andra moi ennepe, Mousa, ...
--
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