ashayh

#!/usr/local/ruby/bin/ruby -w
Dbpath = "/data/db"             # database path
Backpath = "/data/dbbackup"     # backup directory 
Host = ""                       # mongo host to connect,empty is for local
Database = ""                   # database to use. empty is for all
Collection = ""                 # collection to use 
User = ""
Passwd = ""
Now = Time.now
DATE = Now.strftime("%Y-%m-%d")

ashayh

Latency Comparison Numbers
--------------------------
L1 cache reference                            0.5 ns
Branch mispredict                             5   ns
L2 cache reference                            7   ns             14x L1 cache
Mutex lock/unlock                            25   ns
Main memory reference                       100   ns             20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy              3,000   ns
Send 1K bytes over 1 Gbps network        10,000   ns    0.01 ms
Read 4K randomly from SSD*              150,000   ns    0.15 ms

ashayh

require 'ip'

grammar BindConf
  include IP

  rule entries
    (zone / key / server)* {
      %w(zone key server).each do |i|
        module_eval <<-eot, __FILE__, __LINE__+1
          def each_#{i}(&block)

ashayh

.DS_Store
Gemfile.lock
*.pem
node.json
tmp/*
!tmp/.gitignore

ashayh

var crypto = require('crypto');
var dns = require('native-dns');
var rest = require('restler');

var server = dns.createServer();

server.on('request', function (request, response) {
  var domain = request.question[0].name;
  if(domain == 'webutils.flourishworks.com') {
    // Don't log this because it can't be uniquely identified and subsequently retrieved

ashayh

# Simple, scrappy UDP DNS server in Ruby (with protocol annotations)
# By Peter Cooper
#
# MIT license
#
# * Not advised to use in your production environment! ;-)
# * Requires Ruby 1.9
# * Supports A and CNAME records
# * See http://www.ietf.org/rfc/rfc1035.txt for protocol guidance
# * All records get the same TTL

ashayh

var crypto = require('crypto');
var dns = require('native-dns');
var rest = require('restler');

var server = dns.createServer();

server.on('request', function (request, response) {
  var domain = request.question[0].name;
  if(domain == 'webutils.flourishworks.com') {
    // Don't log this because it can't be uniquely identified and subsequently retrieved

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
# 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(