Squids

DNS and squid

to add new IPs for squid:
- add the IPs in /var/named/master/wikipedia.zone in the obvious places (on zwinger)
- make sure to update the serial number in the zone file!
- run rndc reload to make it update - no need to restart named

some useful commands:
- dig ANY en.wikipedia.org @zwinger.wikipedia.org
- dig +short ANY en.wikipedia.org

browne:    207.142.131.235, 207.142.131.247
coronelli: 207.142.131.236, 207.142.131.248
maurus:    207.142.131.245, 207.142.131.246

According to damyta, should use 255.255.255.255 for netmask for the IPs of virtual eth interfaces - otherwise there can be routing confusion.
You must ping through the switch via a virtual interface which you have just brought up (using ping -I), to update the switch's idea of who has what IP. When pinging with -I207.142.131.248 or similar, use suda as the ping target; pinging the broadcast address does not always work.
- Can use script takeip in /h/w/bin to take over an IP if a squid goes down.
- To take down a virtual eth interface, /sbin/ifconfig eth0:n down
- TODO: set up heartbeat for automatic IP takeover.

Currently on yongle in /var/backup/archiv, and/or on zwinger in /home/wikipedia/logs/archiv/

3 600MHz Celeron 1U machines with 20GB HDD and 128MB RAM (to be upgraded to 1GB?) - HP Web Hosting Server Appliance sa1100 - specs: [1]
2 serial ports, 2 NICs, no graphics card
Debian
names are chloe, bleuenn, and ennael
to be located in a colo on Paris - provided free by http://www.lost-oasis.fr/
serial cables running from ttyS1 on one machine to ttyS0 on another; getty running on ttyS0 on each machine, to allow communication using minicom