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Simon Haslam & Ronald van Luttikhuizen

December 1st | UKOUG Tech 2013

Super Sunday | WebLogic Hackathon

Introduction to Puppet & Chef

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Agenda

Configuration management

● Intro, How it was & How it can be

Real world case

Puppet

Chef

Intro to the Hands-on-Labs

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• Automated installations and rollbacks • Inject environment variables, smoke-testing

• Automated builds, tests, and packaging from version control • Central archiving in (artifact) repository

• Automated provisioning of middleware • High frequency of changes to images (e.g. patches)

• Automated provisioning of OS-ready images • Low frequency of changes to images

Configuration management | introduction

Machine Provisioning

Server & Middleware Provisioning

Application Building & Packaging

Application Deployment

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Configuration management | the traditional way

Artisan server crafting

Boring

Stressful

Error-prone

Time-consuming

Non-scalable & expensive

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Configuration management | how it can be

Automated configuration

management Describe a system once, apply as often

as you want

Automate the repetitive

Focus on improvements and “real”

problems as admin

Predictable results

(Near) real-time provisioning

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Configuration management | how it can be

Infrastructure as code & DevOps

Eliminate tedious and repetitive work

Configurations are defined in a machine- and OS-independent domain

language so the manifests are portable and can be reused

Keep servers in sync and know what is running on what server

Configuration can be used as documentation: since configuration is

applied by the documentation is always up-to-date

Configuration can be version controlled and managed the same way you

manage other code

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WLS, OSB, SOA Suite Database Server

Operating System

WebLogic

OSB

SOA Suite

Domain creation

Initial Domain

setup

Operating system

Database

software

Database

creation

SOA Suite

Repository

40

X Total actions

13

8

10

10

40

40

30

5

8

YUM + Packages / JVM /

Ulimits / Kernel / User /

Group / Directories

WebLogic / BSU /

NodeManager

OSB / OPatch

SOA Suite / OPatch

Create Domain

Logs / Security / JMS /

WebApps / DataSources /

Resource Adapters

Source: Roll Out a Complete Oracle Fusion Middleware Env in Less than 10min by Edwin Biemond

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Automation

Automating repetitive steps is nothing new

● OS tools (jumpstart, kickstart, shell scripts, etc., etc.)

But…

● provisioning more environments than ever (cloudy)

● very complex multi-tier environments

New breed tools to standardise such a process

● platform-agnostic

● centralised

● fashionable

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Puppet

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Puppet Example | Apache HTTP Server

package { "httpd":

name => "httpd.x86_64",

ensure => "present",

}

file { "http.conf":

path => "/etc/httpd/conf/httpd.conf",

owner => root,

group => root,

mode => 0644,

source => "puppet:///modules/apache/httpd.conf",

require => Package["httpd"],

}

service { "httpd":

ensure => running,

enable => true,

subscribe => File["http.conf"],

}

Manifests

Resources

● Name

● Attributes and

values

Ordering and

dependencies

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More on Puppet | building blocks

Manifests

Variables and (custom) facts

Node declarations

Classes and Modules

Defined resource types

Templates

Console

if $operatingsystem == 'CentOS'

node 'www1.example.com' {

include common

include apache

}

node 'db1.example.com' {

include common

include mysql

}

file { "http.conf":

path => "/etc/httpd/conf/httpd.conf",

owner => 'root',

group => 'root',

mode => '0644',

content => template('config/httpd.erb'),

}

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More on Puppet | console

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More on Puppet | products, price, etc.

Enterprise vs. Open Source

Puppet Forge

Market presence

Pricing (27-nov-2013)

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More on Puppet | runtime

Versus

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If you want to know more about Puppet …

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Chef

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Chef architecture

Central Chef Server

Multiple Administrators

One Repository

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Chef| terminology

Node, Server, Workstation

Chef-client asks Chef-server about the policy for the node

Resources: a component and the desired state

Recipes: describe resources and desired state

Cookbooks: sets of recipes grouped together, also includes templates

and source files etc

Run List: recipes from cookbooks you want to run

Role: type of node

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Example Recipe

paca

Policy says package

should be installed

This service should be

enabled on reboot, and

must be running

Template specifies the

contents required

Source: Chef Fundamentals Webinar 1 #LEARNCHEF

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Open Source Chef Console

I couldn’t find a screenshot of enterprise one!

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Configuration Drift

Not just used for initial installation

Chef’s policies means it knows desired state

Chef client runs periodically on node & checks state against policy

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Chef in the wild

Enterprise vs. Open Source

Community & Popularity

Pricing (30-nov-2013)

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More about Chef

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Labs & Competition

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Lab| intro

Teams of 3

Choose your poison

Setup & preparation

Hello World

Provision JDK 7

Provision WLS 12c

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Lab

VM

controller

JDK 7 WLS 12c

Browser

pro

visi

on

ing

pro

vision

ing

dashboard

VM

agent

JDK 7 WLS 12c pro

visi

on

ing

pro

vision

ing

VM

agent

JDK 7 WLS 12c pro

visi

on

ing

pro

vision

ing

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Lab| eternal glory

Best Puppet team !!!

Best Chef team !!!

Best overall team !!!

Prize: Short interview with OTN @ 17.30

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Thank you!

Ronald van Luttikhuizen ronald.van.luttikhuizen@oboxproducts.com

Simon Haslam smon.haslam@oboxproducts.com