2007 Server Notes

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Contents

AP Setup

Standard WRT Image plus the following compiled packages

  • dhcparpd
  • flex (dhcparpd dependancy)
  • libnet (dhcparpd dependancy)
  • anna
  • ruby (anna dependancy)
  • xmpp4r (anna dependancy)
  • lca-ap

Openwrt Package List

lca-ap

This package enables the AP to self configure itself and is comprised of


AP Setup Server

This servers sole purpose was to provide DHCP for Unconfigured APs on a private VLAN. It also containted the config files the APs would download to configure themselves

  • eth0 - 169.222.13.5/24 (Internet Link)
  • eth1 - 192.168.2.254/24 (Virgin APs)

dhcpd.conf

This gave the APs a virgin config to start with and told them which IP to connect to to get their configuration script 

option domain-name "lca2007.linux.org.au";
option domain-name-servers 169.222.13.4;

default-lease-time 600;
max-lease-time 7200;

authoritative;

# AP Config
shared-network apconfig {
    subnet 192.168.2.0 netmask 255.255.255.0 {
        option subnet-mask 255.255.255.0;
        pool {
            range 192.168.2.10 192.168.2.240;
            filename "192.168.2.254";
        }
    }
}

Apache

In /var/www the files that will be grabbed by virgin APs

  • dhcparpd.conf
  • dhcparpd.sh
  • setup_ap.sh
  • tcpdump - for debugging maybe include thes in the image
  • strace - for debugging maybe include these in the image
  • passwd - /etc/passwd
  • shadow - /etc/shadow

DHCP Server

This server acted as the DHCP server for attendees as well as configred APS

  • eth0 - Server Network
  • eth1 - AP Mgmt Network

DHCP Server Relay

This acted as a DHCP Relay and was the only server that sat on the wireless LAN and therefore not behind the main firewall

  • eth0 169.222.13.7/24 - Servwer subnet
  • eth1 169.222.8.254/22 - Wireless subnet

/etc/default/dhcp3-relay 

# Defaults for dhcp3-relay initscript
# sourced by /etc/init.d/dhcp3-relay
# installed at /etc/default/dhcp3-relay by the maintainer scripts

# What servers should the DHCP relay forward requests to?
SERVERS="169.222.13.4"

# On what interfaces should the DHCP relay (dhrelay) serve DHCP requests?
INTERFACES="eth1"

# Additional options that are passed to the DHCP relay daemon?
OPTIONS=""


DNS Server

The conference DNS cache

Nothing special here just 

allow-recursion { 169.222.8.0/21; };


Captive Portal

This captured users and forced them to register

It ran a local copy of zookeepr ie apache and postgresql, the following cron job ran every ten minutes to grab user details and passwords from the main LCA website

Check the xen image for the OMAPI code used to make everything work

The portal is modified so that it redirects to /portal/new at signin


Stats from conference DB

  • 688 MAC addresses registerd in portal
  • 544 Delegates registered devices
Number MACs ! Total
1 572
2 88
3 26
4 2

Video Bucket

Used by AV team to upload videos and then ran rsync cronjob They were created accounts

Ran the following script to sync to mirror.LA

rsync-video.sh



Other Servers

  • netflow - setup at the last minute to grab some stats
  • nagios - setup but never used
  • assets - running some asset managment software ask Matt Moor
  • jabberd - For ANNA but never used
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