[K12OSN] LTSP server slow or unresponsive when internet connection is not present
Tomislav Škunca
tomislav.skunca at nacional.hr
Wed Jul 7 09:16:18 UTC 2010
On Wed, Jul 07, 2010 at 10:59:48AM +0200, Mathieu Pelletier wrote:
> I have an LTSP server with 30 clients attached. Everything works well,
> except when our internet connection goes down (which happens with some
> degree of frequency in our context). When there is no access to internet
> from our LTSP server everything becomes really slow until eventually the
> clients just freeze. I have tried removing GSSAPI authentication from SSH
> which seemed to help, at least now I can ssh into the server, whereas
> before this was not possible when internet was down. I am not sure what
> is causing this or how I can fix it. I assume it has something to do with
> DNS, but I am not sure where to start. Any suggestions?
>
> Mathieu Pelletier
> Director of IT Development
> Theological College of Zimbabwe
Try setting the 'UseDNS' option in sshd_config to 'no'. That might help.
Otherwise you might want to check your DNS settings in /etc/resolv.conf
(client side).
If everything seems OK you could also try working around the problem
using /etc/hosts but I wouldn't suggest it as a long term solution.
--
Tomislav Škunca
IS/IT
NCL Media Grupa
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