Is nunit.org down?

[Travis Illig]

I've tried to get to the site for the last couple of days and always get a connection reset error. I checked with downforeveryoneorjustme.com and it doesn't appear to be just me.

[Subodh Brahmi]

I am not able to connect either..

On Tue, Aug 28, 2012 at 11:05 AM, Adam Voss <adam...@tritech.com> wrote:

On Tuesday, August 28, 2012 10:35:45 AM UTC-5, Travis Illig wrote:
> I've tried to get to the site for the last couple of days and always get a connection reset error. I checked with downforeveryoneorjustme.com and it doesn't appear to be just me.

I can confirm we have not been able to access it today or yesterday.  Can ping but trying to get there via Firefox or Chrome just has the loading circle going round-and-round.  Chrome says it cannot connect after a short wait.  I think FF ultimately times out but it is a much longer wait.

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Warm Regards,

Subodh Brahmi

[Charlie Poole]

Hi All,

It's up again.

Many of you will remember that I started running my own system for
NUnit a while back,
due to problems with the service provider I had been using before.

I've been very happy with the service I now use (Core Networks) but
they only provide
the bare metal. Learning to admin the system has been a fun challenge
and has generally
kept us up much more reliably than before.

However, we are now coming down about once a month, on average. The
problem started
when I was on vacation and I "solved" it each time by doing a cold
boot from the service
providers control panel.

Now it's time to actually deal with the cause, which of course must
first be found discovered.

I'd welcome suggestions from anyone with more experience than I have maintaining
Linux Debian systems, either here or offline.

BTW, when the system is not responding, my own access through WebMin
is down as well.
Whatever I do now has to be based on tracks left in logs, etc.

Charlie

[David Schmitt]

On 28.08.2012 20:17, Charlie Poole wrote:
> I've been very happy with the service I now use (Core Networks) but
> they only provide
> the bare metal. Learning to admin the system has been a fun challenge
> and has generally
> kept us up much more reliably than before.
>
> However, we are now coming down about once a month, on average. The
> problem started
> when I was on vacation and I "solved" it each time by doing a cold
> boot from the service
> providers control panel.
>
> Now it's time to actually deal with the cause, which of course must
> first be found discovered.
>
> I'd welcome suggestions from anyone with more experience than I have maintaining
> Linux Debian systems, either here or offline.
>
> BTW, when the system is not responding, my own access through WebMin
> is down as well.
> Whatever I do now has to be based on tracks left in logs, etc.

Linux systems just locking up are in my experience mainly caused by two
factors: faulty hardware and run-away processes that trash the machine.

Another possibility for offlining systems would be some kind of
misconfiguration and/or admin error. I exclude this on the grounds that
you're renting only metal and you don't seem to be playing around with
the system.

The next possibility would be development versions of kernel and
software. I exclude that for the same reason as above.

I hope you have installed all security updates.

I hope you have recent and restorable backups.


If the server is not responsive at any level (web, shell, ping), this
would point towards a hardware problem. Especially a ping is a
kernel-level response and should be always available as long as the
kernel is still running.

If the server's IP is still ping-able while the webserver is not
reacting anymore, some kind of user-space foulness should be suspected.



As a next step I'd look into some kind of monitoring solution to notice
the next outage in a timely fashion and then try to ascertain whether or
not the machine is really totally gone. If it is, you'll need to contact
your provider for replacement hardware. A log of recent failures often
helps to establish that it's not a software failure. Depending on the
provider, it might help/be necessary to call while the server exhibits
its problems.

If the server is still responding at any level, it becomes complicated.
A lock-up + hard-reset often leaves the final file-system transactions
open which contain the relevant log-entry and which will be rolled back
on restart. I'd start with having a look into the logfiles (/var/log)
around the time of the hang-up. Maybe the kernel started reporting
out-of-memory situations, perhaps you can identify unusual access
patterns in the web-logs.


Some kind of performance monitoring would be nice, but that might not
help for very short-lived events. Look into munin or collectd. Some kind
of log-shipping would be nice, but that also might not help for very
short-lived events. Do you have a external syslog-server available? I
could help with that for a while.

If you can get access to the console (serial or otherwise), it makes
sense to configure (r)syslog to write there. This can produce output in
cases where most other venues are blocked.


You can contact me privately if you need further assistance.


Good luck hunting, David

[Charlie Poole]

It is down right now... I just rebooted it.

AFAIK, it has been down twice in the past few weeks, rebooted each time
as soon as I was notified. You may just have been unlucky in your timing or
it's possible that you need to clear your cache.

I'm just set up a free account at host-tracker.com to check the site every 30
minutes and notify me if it's down.

Charlie



On Tue, Sep 18, 2012 at 3:01 PM, Rob M <robm.t...@gmail.com> wrote:
> Any luck with the site? Every time that I've tried to access it in the last
> few weeks, it has been down. This is frustrating since most topics returned
> from a Google search ultimately point to the NUnit site.
>
> Thanks!

>
>
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[Rob M]

Thanks much!