aussielunix

#!/bin/bash
# CVE-2013-6393
# See: https://groups.google.com/forum/#!msg/rubysec-announce/3sx25iR7yHQ/gZOBulw_TeYJ
#
echo "Assumes you use rbenv and assumes your ruby-build is at ~/.rbenv/plugins/ruby-build"
echo "This will uninstall all your rbenv managed rubies and install them again."
echo "Pulling down the latest ruby-build"
cd ~/.rbenv/plugins/ruby-build && git pull && cd -
mkdir /tmp/rbenvupgrade
for RUBY in ~/.rbenv/versions/*

aussielunix

SSH agent forwarding and screen

When connecting to a remote server via SSH it is often convenient to use SSH agent forwarding so that you don't need a separate keypair on that server for connecting to further servers.

This is enabled by adding the

ForwardAgent yes

option to any of your Host entries in ~/.ssh/config (or alternatively with the -A option). Don't set this option in a wildcard Host * section since any user on the remote server that can bypass file permissions can now als use keys loaded in your SSH agent. So only use this with hosts you trust.

aussielunix

For a moment, I'm going to throw away my automation and configuration management hat. I'll let you know when I put it back on. Also, let's ignore that we're talking about Riak specifically for a moment. Also also, let's ignore any (for a brief moment) the proper role of a package manager.

What's your target market?

If you're writing server software, you have two target markets. The system administrator/operations team and the developer.

Why do you want autostart?

The main reason you want autostart is to get people up and running quickly. To do this, you need to ship safe and sane defaults. This means something like a default configuration that listens only on localhost.

aussielunix

#!/usr/bin/ruby

require 'rubygems'
require 'gruff'

# Let's hack almost everything
g = Gruff::Bar.new('800x700') # Define a custom size

g.sort = false  # Do NOT sort data based on values
g.maximum_value = 40  # Declare a max value for the Y axis

aussielunix

Magento Enterprise 1.12 cluster

Scaling Magento presentation with 60 slides and notes, which was then reviewed by Alan Storm.

Table of Contents

• Summary
• August 2013 traffic
• Web hosts
• Performance

aussielunix

---

- name: locale | fixup Ubuntu's broken locale 
  hosts: all
  sudo: yes
  gather_facts: True
  vars:
    locale: en_AU.UTF-8
  tasks:
    - name: locale | run localegen

aussielunix

---

- hosts: localhost
  connection: local
  gather_facts: no
  vars:
    region: ap-southeast-2
    name: test-vpc

  tasks:

aussielunix

sudo cryptsetup luksOpen /dev/sda5 luks_container

aussielunix

Ansible Readme Driven Development (wish)

It would be great to be able to write out a play that contains nothing but name: ... lines as a planning tool.
You can then replace each line one at a time untill you have a working play/role.

aussielunix

virt-install --accelerate -n guppy -r 512 --vcpus=1 \
  --disk pool=lvm,bus=virtio,size=35 --vnc --os-type linux --os-variant=rhel5 \
  --network=network:default -l http://192.168.122.1/os/CentOS/5.5/os/x86_64/ -x "ks=http://192.168.122.1/ks/ks.cfg"