Bret Hughes wrote:
>
> Fred Whipple wrote:
>
> > All,
> >
> > I'm looking for a good watchdog card for Linux and am coming-up short.
> > Any pointers?
> >
> > Another thing I'd like to try out is some sort of device which will
> > reboot a Linux server remotely if need-be. Sometimes you get into a
> > situation where the kernel hasn't crashed, and still answers pings, etc.
> > and would probably look to a hardware watchdog like everything's okay,
> > but the machine is still unreponsive and you can't telnet to it.
>
> Don't know where you have looked but the Redhat harware compatability list
> has references to several watchdog cards. Some have phone connections as
> well I believe.
> In the case that something has hosed to the point of no remote access but
> still may be operating enough for a watchdog program to tickle the card,
> Could you run a script via cron that would check to see if the network
> and/or telnet is functioning and if not issue a shudown -r now?
>
> Just a few thoughts.
Bret,
That's a good thought - in fact I had it myself :-) Unfortunately, the
issue is the machine is out of RAM. Or, at least the machine I'm
thinking of in particular. And our of RAM means it doesn't have enough
RAM to open the 'shutdown' command.
-Fred
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