Archive:Equipment/Babbage

Babbage
Model	Dell PowerEdge 800
Sub-category	Systems
Status	Good working order
Consumables	Unknown
Accessories	Unknown
Training requirement	Unknown
Training link	Unknown
ACnode	No
Owner	LHS
Origin	Unknown
Location	Basement, behind the Rack

C. E. Liverati, 1841

Warning

The latest kernel (and possibly others) can't mount the root FS - they throw a kernel panic due to some XFS weirdness (the XFS volume was created manually).

Kernel 2.6.32-46 works, but 2.6.32-47 up to 2.6.32-66 don't. Please try a newer kernel if one is installed; otherwise use -46.

Purpose

Babbage is a general usage server that lives in the space. It has largely been deprecated by services offered through the VM 'chomsky' and is due for full decommissioning soon.

Access

Hackspace members do not automatically receive a Babbage account. To access Babbage, ask for an account on the IRC, and then connect via SSH. This system predates the LDAP infrastructure and will not be upgraded to support it.

Security

Since many hackspace members have root access, and since very little effort (ok, no effort whatsoever) is put into securing Babbage you should assume that the likelyhood of someone breaking into it is quite high. Don't leave any files on there that you don't have a backup of, and don't assume any data on Babbage will remain confidential. Be careful about ssh forwarding and beware of thing like github passwords or passwords to other machines in the hackspace.

Specs

• OS: Ubuntu i686
• CPU: Intel(R) Celeron(R) CPU 2.53GHz (1 logical core)
• RAM: 3GB - 2 x 512 MB dimm DDR2 533mhz 1.9ns + 2 x 1Gb, note: all ECC.
• Disks: 2x500GB, 2x750Gb, all SATA
• Extras: video digitiser card, extra USB ports.
• GPU: Intel Corporation E7221 Integrated Graphics Controller

Name

Named after Charles Babbage.

See also: System naming

DNS

• Internal: babbage.lan.london.hackspace.org.uk
• External: babbage.hack.rs

Logbook

System logbook

Services

These must be running in sudo screen sessions belonging to root (run from their directories):

Please use screen -S motion, screen -S irccat, etc.

• /usr/local/bin/scripts/startmotion
• /home/jonty/irccat/irccat.sh
• python /usr/local/bin/Lighted/lighted.py not in use
• /var/www/fcagg/fcagg.sh

These services should be started automatically as daemons:

• /etc/init.d/ircensus start
• /etc/init.d/doorbot-listeners start
• /etc/init.d/xinetd start
• /etc/init.d/apache2 start
• /etc/init.d/lighttpd start
• /etc/init.d/boarded start
• /etc/init.d/irccat start
• ssh
• mosh
• httpd
• nginx (for ACNode, etc)

These applications are also used in long-running sessions:

• irssi

Webcams

Webcams are controlled by the motion daemon. This can be run from `/usr/local/bin/scripts/startmotion` (preferably in a screen session)

Networking

See Babbage/Networking

Config

Set the following in /etc/lighttpd/lighttpd.conf:

server.document-root       = "/home/solexious/coolbot"
server.port                = 8022

Migration and Decommissioning

• Move glados files to Colin and change mountpoints for systems playing doorbot audio files
• Move userdirs/mystery-dirs (hopefully everything) to Colin - chmod/chown to LDAP credentials as necessary
• Speak fondly of the purpose it provided
• Shut it down, leave offline for 3 months, reformat, replace a weaker system like Hamming or preferably recycle the whole thing.