ashayh

#!/usr/bin/env ruby
#
# As my coworker often says: who monitors the monitoring?
#
# Or: Quis custodiet ipsos custodes?
#
# Basic monitoring of Sensu via the VIA. Meant to be run as a cron job.
# This script is meant to be run as a CRON.
#
# Written by Jean-Francois Theroux <failshell@gmail.com>

ashayh

- Tune /etc/ssh/sshd_config

UseDNS no  # Disable DNS lookups
GSSAPIAuthentication no # Disable negotation of slow GSSAPI

don't forget to restart it, use a script provider to set it , or create it with veewee or snapshot it

- Tune Vagrantfile

    vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]

ashayh

#!/bin/bash

# ashay.humane at the gmail dots com
# Headless install of cgminer on a ATI HD series GPU
# Tested on Ubuntu server 12.04.4 with a ATI HD 7970
#
# Do a regular install of Ubuntu server with openssh enabled.
# Then run this script.
#
# The script requires a REBOOT, which could be avoided,

ashayh

{
  "intensity" : "13,13",
  "vectors" : "1",
  "worksize" : "256",
  "kernel" : "scrypt",
  "lookup-gap" : "2",
  "thread-concurrency" : "8192,8192",
  "shaders" : "2048",
  "gpu-engine" : "1050,1050",
  "gpu-fan" : "50-95",

ashayh

#!/bin/bash
# pre-commit git hook to check the validity of a puppet manifest
# 
# Prerequisites: 
#   gem install puppet-lint puppet
# 
# Install: 
#  /path/to/repo/.git/hooks/pre-comit

# Source RVM if needed

ashayh

#!/usr/bin/env python
import hashlib
import optparse

import paramiko
from Crypto.PublicKey import RSA


def insert_char_every_n_chars(string, char='\n', every=64):
    return char.join(

ashayh

The best way to use this tool is to hook apt's use of dpkg to run it before doing any package installs.

In your apt.conf, put this:

DPkg::Pre-Install-Pkgs {"xargs -rL1 bash /path/to/stripdeb.sh 2>&1 | logger -t stripdeb"}

Then, a demo:

% sudo apt-get install mysql-server-5.1

ashayh

#!/bin/sh

[[ -n "$1" && -n "$2" ]] || { echo "Usage: $0 <interface to grab multicast packets from> <interface to send modified packets to> [target MAC address 1] [target MAC address 2] ..."; exit 0 ; }

IIF=$1
OIF=$2
shift
shift
SRC_MACADDR=`ip link show $OIF | awk '/ether/ {print $2}' | tr -d :`

ashayh

#!/usr/bin/ruby
require 'rubygems'
require 'packetfu'

dev = ARGV[0]
mac=`ip link show #{dev} | awk '/ether/ {print $2}'`
ARGV.shift
dests = ARGV

cap = PacketFu::Capture.new(

ashayh

#!/bin/sh

VIP=$1
IF=$2

# Determine the interface's MAC address
MAC=`ip link show $IF | awk '/ether/ {print $2}'`

# Determine ENI ID of the interface
ENI_ID=`curl http://169.254.169.254/latest/meta-data/network/interfaces/macs/$MAC/interface-id`