mriddle

Upgrading like a baws

upgradinate_script.rb

  helper = UpgradinateFileHelper.new 'OLD NESS', 'NEW-NESS'
  helper.upgradinate_files [
      "/path/to/project/Gemfile"
 ]

mriddle

for instance in `ec2-describe-instances | grep ami-80dd59e9 | grep '^INSTANCE' | cut -f2 -s`; do 
ec2-create-tags $instance --tag "Name=Foobar"
done

mriddle

ORIGINAL_JENKINS_SERVER=
ORIGINAL_SERVER_USER=

NEW_JENKINS_SERVER=
NEW_SERVER_USER=

# ON THE ORIGINAL JENKINS SERVER
ssh $ORIGINAL_SERVER_USER@$ORIGINAL_JENKINS_SERVER
cd /var/lib/jenkins/
for i in `ls jobs`; do echo "jobs/$i/config.xml";done > config.totar

mriddle

#cloud-config

output:
  all: ">> /var/log/cloud-init.log"

# the chef server's alias will be "chef", add a /etc/hosts entry for it
bootcmd:
  - echo 127.0.0.1 chef >> /etc/hosts

apt_sources:

mriddle

Troubleshooting a chef client/recipe

Debugging Chef with Shef

When the chef client fails to run the recipe successfully during bootstrapping sudo chef-client to setup the connection with the chef-server. It will run with an empty run list. After its connected login to http://yourchefserver.com:4040/nodes/_NODE_NAME_, add the roles/recipes to the chef-client and run sudo chef-client from the client again.

When fixing a recipe and re-running make your modifications run knife cookbook upload -a #or cookbook name from your dev machine and run sudo chef-client from the chef client.

When there are issues registering the client with the chef-server check that the chef-client name isn't already registered on the server under clients or nodes or that the client has not already been registered (see below)

mriddle

Using Knife

Basic configuration

• Basic knife configuration

How to knife the chef

• Uploading cookbooks

  knife cookbook upload -a

  Will upload all cookbooks
• Updating cookbooks from source

  knife cookbook site vendor cookbook_name # e.g. jenkins

• Adding roles knife role from file path/filename.ext #e.g. roles/jenkins_node.json

mriddle

### Chef Knife config example
# https://github.com/fnichol/chef-bootstrap-repo/blob/master/.chef/knife.rb
###

# Environment variables required:
# CHEF_SERVER_URL - IP or url of your chef server
# CHEF_USER       - Initial user
# AWS_ACCESS_KEY  - AWS Access ID found here https://portal.aws.amazon.com/gp/aws/securityCredentials
# AWS_SECRET_KEY  - AWS Secrete key found in link above

mriddle

#!/usr/bin/env bash
set -e
set -x

### How To Use
#
# sudo bash -c 'bash \
#   <(curl -sLB https://raw.github.com/gist/1209226/bootstrap_chef_server.sh) \
#   --hostname foo.example.com'
#

mriddle

#!/bin/sh

#
# Too many crusty old git branches? Run this to find likely candidates for deletion
# It lists all the remote branches and sorts them by age.
# 
# Folks at pivotal shared this with me
#  
#$ . show-remote-branch-info.sh 
# 2012-05-04 09:42:29 -0700 4 minutes ago Ted & Bill \torigin/hey_Bill

mriddle

## html_safe_intput.rb
# encoding: UTF-8

class HtmlSafeInput < Formtastic::Inputs::TextInput

  # Called dynamically, via form.input :foo, :as => :html_safe
  def to_html
    return super if object[method].blank?
    input_wrapping do
      label_html <<