[debian-lan-devel] DNS causing issues in network performance

[BMIRC System Administrator]

Hi Andreas,

After rebooting again, the problem has been resolved. I think that upon the
initial reboot, there were updates that couldn't take hold effectively
until rebooted again.

I hope you didn't spend too much time/energy thinking about this issue,
since it wound up being such a simple fix.

Best,
Sam

On Thu, Oct 13, 2016 at 9:30 PM, Andreas Mundt <andi.mundt at web.de> wrote:

> On October 11, 2016 3:34:20 AM GMT+03:00, BMIRC System Administrator <
> bmi.sysadmin at mail.sdsu.edu> wrote:
>
> >I am using DebianLAN on the cluster for my lab, and the server went
> >down a
> >few days ago. Once I rebooted the head node, all compute nodes and
> >workstations came back up, but ever since then all workstations have
> >been
> >very slow, have had intermittent issues connecting to the internet
> >(usually
> >with DNS errors), and login will seemingly randomly fail about
> >one-third of
> >the time.
> >
> >I suspect the issue is with DNS. Do you have a hypothesis as to what
> >the
> >problem might be?
>
> No idea.   :-/
>
> >I watched the syslog as client workstations tried to log in, and the
> >folllowing error message appeared:
> >
> >icinga: SERVICE ALERT: workstation00;Zombie
> >Procs;CRITICAL;HARD;4;CHECK_NRPE: Socket timeout after 10 seconds
>
> This is just a message from icinga, probably not related (or just a
> symptom) of the problem.
>
> Can you test dns? Perhaps forwarders need to be added to bind?
>
> Best regards,
>
> Andi
>
>
> Hi Sam,
> --
> Sent from mobile, excuse my brevity.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.alioth.debian.org/pipermail/debian-lan-devel/attachments/20161014/633a686b/attachment.html>