Noklab/Lab Computer: Unterschied zwischen den Versionen

Version vom 19. März 2015, 11:46 Uhr

Lab01

There is a very old computer in the lab that can be used if you forgot your laptop power supply or just came by. Or if you do not want to risk your own hardware while connecting a device you just built.

Turning It On

Geht gerad nicht, da Labrechner 2.0 und Autologin noch nicht eingerichtet, bzw. anderes PW als der alte Rechner.

You have to flip the manual power switch on the power supply. The PC will then turn on automatically. The system is configured for autologin as penny.

Turning It Off

Just shut down the system as usual, then switch off the switch on the power supply.

Printing

see Noklab/Printer

Joining the MUC

There is a dedicated XMPP account for penny, just start pidgin.

Turning It On - Remotely

If you want to start penny remotely, you need a special key save it to ~/.ssh/remote_dropbear_id_rsa:

And a new knwon_host file (.ssh/.ssh/known_hosts.initramfs):

|1|vMJrq/P0HbVhbVWENsuvF4w/Dgk=|//fdEvPyUeaYVNm2sAXklHxttC4= ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAglJE2x6GOphU0FMDwDnpllMyhL4gj14DE2YzQfOIS5aMfvl3cEh7p+CEW+MWhRpf7bmJ3tXT8E7dvrDGw7Ag8IXnlkAKh2xcpkudEcT6gvK5pxUPcD1hObodVX2dT6KSHBbadd2FkGJtMkabEnNpN0qDA1QKZHfsVbh5A3+0OI8awL8=

Now you have to run following command:

ssh -o "UserKnownHostsFile=~/.ssh/known_hosts.initramfs" -i ~/.ssh/remote_dropbear_id_rsa  root@10.23.42.125 "echo -ne "PASSPHRASE" > /lib/cryptsetup/passfifo"

Or modify the .ssh/config:

Host penny-login
       Hostname 10.23.42.125
       User root
       IdentityFile /home/hefee/.ssh/remote_dropbear_id_rsa
       UserKnownHostsFile /home/hefee/.ssh/known_hosts.initramfs

Afterwards the folloing command:

ssh penny-login "echo -ne "PASSPHRASE" > /lib/cryptsetup/passfifo"

lab02

ipv4:10.23.42.117

|1|+mJbwJfXefv6exw2f8ljEKsfft8=|pgSI7M/S8+jtnZf9DG0wQh2Gw68= ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgn5EXI5ulOZs/4WvTotVL4LycHeLnvUpkOm0VyW/ydbm9e44iuiqdkUT9IZMVz3LM2au/DBLKQu4USzBAEnsu3+U/Xn9Bt1reA3qlUwFxEcLtKQ6sc9DPbZEGG9BfNptquht3hZ9b+cHra9DmK+awidurra3PaB3BONNx1DcqjfUf88=

Badblock

Badblock is the heavily decorated laptoplocated somewhere in the space. It has a Core2 Duo CPU, some ram (2G I think) and lots of HD space (500G). It can be used as an emergency-laptop if you forgot your own or your battery is dying, or as a remote desktop connected to the beamer for multiple people to work on. Pixelflut is installed, too.

@@ Zeile 1: / Zeile 1: @@
 [[File:Nase_Labpc.jpg|500px|thumb|Lab PC]]
+== Lab01 ==
 There is a very old computer in the lab that can be used if you forgot your laptop power supply or just came by. Or if you do not want to risk your own hardware while connecting a device you just built.