robinsmidsrod

ddns-update-style none;
deny bootp; #default
authoritative;

include "/etc/dhcp/ipxe-option-space.conf";

# GREEN (private network)
subnet 10.1.1.0 netmask 255.255.255.0 {
    range 10.1.1.100 10.1.1.199;
    option subnet-mask 255.255.255.0;

robinsmidsrod

Go into your git checkout folder of ipxe.

Save the below file as nic-menu.ipxe.

Build iPXE like this:

cd src && make EMBED=../nic-menu.ipxe && cd ..

Requirements: current iPXE as of 2013-08-01 (for proper behavior of autoboot with a network device specified, netX feature, PCI vendor/device ID display and inc command)

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

piscisaureus

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

mikejoh

Setting up a Docker container as a DHCP server

In this guide I’ve tested a number of different commands and configurations using Docker to run a container with dhcpd (+macvlan driver) to serve my clients in my home network. In the end i’ll migrate from my Windows 2012 R2 Server running DHCP to a much more lightweight Docker container (7.42 MB in total). Wow.

My home environment:

• Firewall (Juniper)
  • I’m running IP helper for bootp which in this case means that i relay DHCP requests from various VLANs into one where i've placed my Windows 2012 R2 server. This is also where my container will live. See the FW configuration below:

robinsmidsrod

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/boot.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

robinsmidsrod

#!ipxe
set sysrcd-version 4.7.1
echo Booting SystemRescueCD ${sysrcd-version} x86 for ${initiator-iqn}
# Kernel command-line options are documented here:
# http://www.system-rescue-cd.org/Sysresccd-manual-en_Booting_the_CD-ROM#Network_boot_using_PXE
set base-url sysrcd-${sysrcd-version}-x86/
kernel ${base-url}isolinux/altker${archs} setkmap=no net.ifnames=0 backstore=off
initrd ${base-url}isolinux/initram.igz
initrd ${base-url}sysrcd.dat /sysrcd.dat
# Load the ramdisk again as a file inside the ramdisk, so our custom init script

NiKiZe

# Known working dnsmasq version 2.85 config for iPXE proxydhcp usage
# things to replace:
# * 10.1.1.0 - your subnet
# * eth0 - interface to listen on, or switch to bind-dynamic
# * 10.1.1.2 - your tftp server ip
# * http://gentoo.ipxe.se/boot.ipxe - script to run once inside iPXE

# Debug logging
log-debug

schwern

[alias]
        st = status
        ci = commit -v
        cii = commit -v --interactive
        cia = commit -v -a
        addi = add --interactive
        addchanged = add -u
        br = branch
        co = checkout
        diffwords = diff --word-diff

bradoaks

#!/bin/bash

# As the "bufferbloat" folks have recently re-discovered and/or more widely
# publicized, congestion avoidance algorithms (such as those found in TCP) do
# a great job of allowing network endpoints to negotiate transfer rates that
# maximize a link's bandwidth usage without unduly penalizing any particular
# stream. This allows bulk transfer streams to use the maximum available
# bandwidth without affecting the latency of non-bulk (e.g. interactive)
# streams.