ozbillwang

http://stackoverflow.com/questions/25627325/temporarily-disable-aws-auto-scaling-group-activities

aws autoscaling resume-processes --region ap-southeast-2 --auto-scaling-group-name ASG_group

aws autoscaling suspend-processes --region ap-southeast-2 --auto-scaling-group-name ASG_group

ozbillwang

# http://www.stefanwrobel.com/how-to-make-vagrant-performance-not-suck

config.vm.provider "virtualbox" do |v|
  host = RbConfig::CONFIG['host_os']

  # Give VM 1/4 system memory & access to all cpu cores on the host
  if host =~ /darwin/
    cpus = `sysctl -n hw.ncpu`.to_i
    # sysctl returns Bytes and we need to convert to MB
    mem = `sysctl -n hw.memsize`.to_i / 1024 / 1024 / 4

ozbillwang

{
  "AWSTemplateFormatVersion" : "2010-09-09",
  
  "Description" : "AWS CloudFormation template to deploy railo4/tomcat7/nginx.",
  
  "Parameters" : {
      
    "KeyName" : {
      "Default" : "bacfug",
      "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instances",

ozbillwang

vagrantfile-local:
    vm:
        box: puphpet/debian75-x64
        box_url: puphpet/debian75-x64
        hostname: ''
        memory: '512'
        cpus: '1'
        chosen_provider: virtualbox
        network:
            private_network: 10.10.56.101

ozbillwang

require('http').createServer(function(q, s){s.end('ok');}).listen(51160);

ozbillwang

---
- name: coreos-01
  box: coreos-alpha
  ram: 512
  ip: 172.17.8.101
- name: coreos-02
  box: coreos-alpha
  ram: 512
  ip: 172.17.8.102
- name: coreos-03

ozbillwang

---
- name: coreos-01
  box: coreos-alpha
  ram: 512
  ip: 172.17.8.101
- name: coreos-02
  box: coreos-alpha
  ram: 512
  ip: 172.17.8.102
- name: coreos-03

ozbillwang

# lib/puppet/parser/functions/pw_hash.rb

module Puppet::Parser::Functions
  newfunction(:pw_hash, type: :rvalue) do |args|
    raise Puppet::ParseError, "pw_hash takes exactly two arguments, #{args.length} provided" if args.length != 2
    # SHA512 ($6), default number of rounds (5000)
    # rounds could be specified by prepending rounds=<n>$ parameter before the salt, i.e.
    # args[0].crypt("$6$rounds=50000$#{args[1]}")
    args[0].crypt("$6$#{args[1]}")
  end

ozbillwang

One-liners

Reverse every line:

Input file:

$ cat foo
qwe
123

bar

ozbillwang

# -*- mode: ruby -*-
# vi: set ft=ruby :
 
$master_script = <<SCRIPT
#!/bin/bash
cat > /etc/hosts <<EOF
127.0.0.1       localhost
 
# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback