#debian - Tue 20 Feb 2007 between 23:12 and 23:22

NY Lost Funds



karstenPupenoR: There's also stuff from various suppliers, including Avocent, some of which works better than others.
hatterstrange, the terminal has not logged out but during the time the .bash_history is zero
karstenPupenoR: The avocent Java-based Internet KVM is complete pants.
hattermaybe i did an oops... but i don't remember any
PupenoRkarsten: it seems thes net weasel are only VGA/Keyboard <-> RS323, no IP stuff, right?
karstenPupenoR: You'd need a serial concentrator and/or serial-to-TCP converter.
hatterpupenor: www.opengear.com have some interesting looking stuff
PupenoRkarsten: yeah, I wante all in one. Something like this: http://www.avocent.com/web/en.nsf/Content/DSR1024 but it costs as much as our servers.
claudio`is there life?
abrotmannot here
hatterclaudio`: after death ?
karstenPupenoR: http://www.google.com/search?q=RS-232+Internet+%28concentrator%7Cconverter%29
claudio`out of debian :-)
karstenPupenoR: Do *NOT* get the KVM.
PupenoRkarsten: why not?
karstenPupenoR: They're complete crap. Utterly unnecessary for Linux.
PupenoR: And over-the-net performance is abysmal.
PupenoR: They're _ok_ over 10/20gbps between my desk and the DC. 150mbps to a remote site sucks (60+ seconds for a screen draw at boot), and to India (where our overnight techs are) is utterly unusable.
PupenoR: We were going to provision several thousand servers with these. We've reconsidered.
PupenoRputing a VGA/keyboard <-> RS232 and connecting it to another PC's RS232 port (both running linux), can't I just do it?
karstenPupenoR: All you need is serial out.
PupenoRkarsten: serial-out from the to-be-controlled computer, right?
karstenPupenoR: http://www.avocent.com/web/en.nsf/Content/CycladesACS_Landing
PupenoR: <racked server> -- < serial concentrator > ~~ { internet cloud } ~~ < you FTW >
bwlangi've only ever had to go in to our colocation facility once because of a screw up... i'm not sure these remote kvms are really needed.
karstenPupenoR: The main difference is that this requires that your server kit be capable of sending BIOS over serial.
bwlangwhat's wrong with ssh?
PupenoRkarsten: this is to control only one server. Can't I replace the serial concentrator with a PC running Linux?
karstenbwlang: How many BIOSes do you know of which support 1) Ethernet cards 2) DHCP 3) SSH 4) Authentication
PupenoR: Sure.
PupenoR: That's why I asked how many systems.
PupenoRkarsten: like this: PC (to be controlled) <-> net weasel <-> RS232 <-> PC (controller) running Linux <-> internet.
karsten: we have lot's of single servers spread across the country... we may start having pairs of servers, but no datacenter with a hundred of them.
karstenPupenoR: If that's all you've got, then cross-cabling a few systems comports together gives you access.
bwlang0... but i i'm not sure people *really* need bios access... it's so unusual that you can fix something from the bios but not via ssh
karstenbwlang: Wait until you start getting Northbridge GART errors on Sun v40zs.
bwlang: That requires a BIOS fix.
PupenoR: The other thing that is a real lifesaver is managed power. If you can simply cut power to a system you're going to avoid a lot of long walks / night flights.
bwlangouch... i just use cheapo supermicro servers... no stellar performance, but i've never HAD to do a bios upgrade (only 20 or so machines though)
karstenPupenoR: Though remote hands may be able to deal with that.

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NY Lost Funds