Intermittent Connectivity Problem [was Re:linux problem]

[JM]

On Tuesday 13 December 2005 3:04 am, Robert Brockway wrote:
> On Mon, 12 Dec 2005, Jerome Macaranas wrote:
> > hi all,
> >
> > 	I have a system that serves HTTP and PGSQL ( serves locally only
> > contents for dynamic HTTP conntents )... it runs on Redhat 9 with 2G
> > memory..... for some reason the box just suddenly became unavailable...
> > the server is pingable.. but services running on it is unaccessible ..
> > HTTP, SSH... Ive already checked the logs... but didn't saw anything
> > unusual..
>

since the box is located 100,000 km away from our office i can only ask the 
tech-support for the provider to do some things like connect a monitor.. and 
email me the things that he sees... but unfortunately he told me that there 
are no errors.....

ill add debug on logs and lets see...

tia,

> If the box becomes unavailable how are you getting in to checkout the
> logs?  If it is after a reboot then the horse has bolted - you need to
> capture important data right after the system has the problem.
>
> Can you checkout the console when this is happening?  If it is not easy to
> get to the keyboard & monitor consider setting up a serial console - this
> is great for capturing console output for later.  Also checkout dmesg.
>
> Turn all the logs you can to debug.  This will add load to the server.  If
> the box is in production watch the system load.
>
> How long does the system last before it suffers this problem?  Minutes,
> days, weeks?
>
> Google for cross references to your hardware, kernel, filesystems, etc and
> watch for others reporting similar problems.
>
> Also, it's better to be more specific with the title.  Some people may not
> checkout the thread based on the title, or you may get the wrong people
> doing so (ie, those without enough experience).  If you used a subject
> line of something like "Intermittent Connectivity Problem" (which I have)
> you may tend to draw in the right audience more easily.
>
> Cheers,
>
> Rob
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