boris

God.watch do |w|
  w.name = "mysql"
  w.interval = 30.seconds
  w.start = "/etc/init.d/mysql start"
  w.stop = "/etc/init.d/mysql stop"
  w.restart = "/etc/init.d/mysql restart"
  w.start_grace = 20.seconds
  w.restart_grace = 20.seconds
  w.pid_file = "/var/run/mysqld/mysqld.pid"
  w.behavior(:clean_pid_file)

boris

# HAProxy

description     "HAProxy"

start on runlevel [2345]
stop on runlevel [016]

respawn
respawn limit 2 5

boris

/* select contact .. from TALBE where user="user" and CONDITION into outfile 'path';*/

select concat('KILL ',id,';') from information_schema.processlist where user='root' and Info like "%fail%" outfile '/tmp/kill.txt';
source /tmp/kill.txt;

boris

frontend front-in
    bind 0.0.0.0:80
    acl custom_uri path_beg /something
    use_backend super_server if custom_uri
    default_backend all_servers

backend all_servers
    balance roundrobin
    option httpclose
    option forwardfor

boris

#!/usr/bin/env ruby

require 'rubygems'
require 'net/ssh'

Net::SSH.start('server.fqdn', 'foo') do |ssh|
   output = ssh.exec("uname -a ; whoami")
   puts output
end

boris

Playing with Docker

Para esto, los ingredientes son:

• Vagrant
• Docker desde http://docs.docker.io/en/latest/installation/vagrant/

Crear una imagen base (notar el cambio en el prompt.

vagrant@precise64:~$ docker run -i -t base /bin/bash

boris

#!/bin/sh
# Require:
#   * VirtualBox already installed
#   * Internet connection :)
#
# This script will:
#   * Download the latest live ISO image of SmartOS
#   * Create a VirtualBox VM, or update an existing VM with the latest ISO
#   * Configure the VM with a zones disk, and boot it!
#

boris

#! /bin/bash
FILE="chef-server_11.0.8-1.ubuntu.12.04_amd64.deb"
wget https://opscode-omnibus-packages.s3.amazonaws.com/ubuntu/12.04/x86_64/$FILE
dpkg -i $FILE ; sudo chef-server-ctl reconfigure

boris

IaaS - OpenStack

• Creación de un Keypair
• Configuración de Security Groups
• Crear una nueva instancia con Ubuntu
• Conectarnos a la instancia e instalar software (apache2)

PaaS - Heroku

boris

#!/usr/sbin/dtrace -q

pid$target::*mysql_parse*:entry
{
  printf("Query: %s\n", copyinstr(arg1));
}