thanks to all who replied
about UPS, unfortunately we just bought a bunch of them, and they don't
include this feature
about replacing the modem, the problem occurs with various makes and
models (bewan, linksys, alcatel, netgear...)
about x10 devices, I'll add this as an alternative choice. it looks in
fact cheaper, but it doesn't be quiet known in France
about atm circuit and network interface, I'll try and see at once if the
models I have support this, if the problem can be solved using it, and
how the server can manage that
btw we have 60 remote sites to handle and it takes up to 20% of a full
time job just to go here and there to press a reset button, so it looks
worth 100 or so bucks per site
thierry itty a écrit :
Hello
On small sites, we have servers (linux rh 8, 9, or fc 4) acting as
internet routers, with a lan on one nic and an ethernet dsl modem on
another nic.
Sometimes the internet connection is lost and there no way to get it
back but to reset the modem (even rebooting the server doesn't make
it, it's really a modem frozen problem)
Instead of paying somebody to drive there and pull the AC plug from
the socket then push it in again, I decided to find some Remote Power
Control device which could allow the server to do that by itself when
it decides the modem is frozen.
I found some sort of such devices on the net :
- iBoot : http://www.connectworld.net/data_center/remote_reboot.HTM
- Sentry :
http://www.servertech.com/products/RemotePowerManagement/SentryIPM-2/
- Sensatronics : http://www.openxtra.co.uk/product.php/34/1/
- Adder :
http://www.adder.com/main.asp?id=508_2075_23632&mode=Description
Basically they seem to fit my needs, there are some important
requirements though :
- the device must handle 220V/50Hz AC
- the device must be able to be connected to the linux server, either
via ethernet ip, serial rs232 or usb and handled by it
- the device must accept commands via linux script (being as simple as
some "echo value > /dev/ttySx" or as complex as some "wget
http://device-ip-address/cgi/power?state=on";) and must not require a
browser with a java applet or whatever that can't be scripted
I'd appreciate any advice and experience about such solutions, or
other for those who had addressed the same problem in a different way
TIA
Thierry
