DEVOPS TOOLS FOR EVERYONE: VAGRANT, PUPPET AND WEBMIN

!Michał Karzyński, DevCon 2014

TALK OUTLINE

1. Vagrant - create#

2. Puppet - configure#

3. Webmin - administer

michal@karzynski.pl DevCon 2014

YOURS TRULYMichał Karzyński#

• project manager at Politechnika Gdańska#

• freelance developer and consultant#

• polyglot, currently: Python and JavaScript#

• author#

• web developer since 1996#

• @postrational http://michal.karzynski.pl#michal@karzynski.pl DevCon 2014

What does a webapp look like?

LAMP

Apache

Linux

MySQL

PHP

Nginx

Linux

PostgreSQL

Python

Virtualenv

Gunicorn

Nginx

Linux

PostgreSQL

Python

Virtualenv

Gunicorn

Varnish

Redis

Nginx

Linux

PostgreSQL

Python

Virtualenv

Gunicorn

Varnish

Redis MongoDB

Celery

Postfix

RabbitMQ

Vagrant

$ vagrant up

$ git clone git://.../development.git$ cd development$ vagrant up

HOW DOES IT WORK?

VAGRANTFILE_API_VERSION = "2"!!Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|! config.vm.box = "debian-wheezy-64"! config.vm.box_url = "https://.../debian-wheezy-64.box"! config.vm.hostname = "wheezy-vm"!end

Vagrantfile

• Ease of use#

• Many pre-configured boxes available#

• Support for multiple machines#

• Local support for VirtualBox or VMware#

• Build remote clouds on AWS, RackSpace, etc.#

• Provisioning using: Ansible, Chef, Docker, Puppet, etc.

FEATURES

http://www.vagrantup.com

PUPPET PROVISIONINGVagrant.configure(VAGRANTFILE_API_VERSION) do |config|! config.vm.box = "debian-wheezy-64"! config.vm.box_url = "https://www.dropbox.com/s/foj5mml4ft3b363/debian-wheezy-64.box?dl=1"! config.vm.hostname = "wheezy-vm"!! # Install puppet modules! config.vm.provision :shell do |shell|! shell.inline = "# Install modules from Puppet Forge!                    mkdir -p /etc/puppet/modules;!                    puppet module install puppetlabs/apt;!                    !                    # Install Puppet modules from GitHub!                    aptitude -y install git;!                    cd /etc/puppet/modules;!                    git clone git://github.com/stankevich/puppet-python.git python;!                    "! end! ! # Use Puppet to provision server configuration! config.vm.provision "puppet" do |puppet|! puppet.manifests_path = "manifests"! end!!end

Vagrantfile

Puppet

INSTALLING A PACKAGE

$ vim /etc/apt/sources.list!!deb http://download.webmin.com/download/repository sarge contrib!!$ wget -qO - http://www.webmin.com/jcameron-key.asc | sudo apt-key add -!$ sudo aptitude update!$ sudo aptitude install webmin!

WITH PUPPETinclude 'apt'!!apt::source { 'webmin':! location => 'http://download.webmin.com/download/repository/',! release => 'sarge',! repos => 'contrib',! key => '11F63C51',! include_src => false,!}!!apt::key { 'webmin':! key => '11F63C51',! key_source => 'http://www.webmin.com/jcameron-key.asc',!}!!exec { "apt-update-webmin":! command => "/usr/bin/aptitude -y update",! require => [Apt::Source['webmin'], Apt::Key['webmin']],!}!!package { ! 'webmin': ! ensure => present,! require => Exec['apt-update-webmin'],!}

webmin.pp

SET UP A DATABASE# Install the Postgres server!class { 'postgresql::server':! ensure => 'present',! listen_addresses => 'localhost',! encoding => 'UTF8',! manage_firewall => true,!}!!# Install PostgreSQL client!class { 'postgresql::client': }!!# And development libraries!class { 'postgresql::lib::devel': }!!!# Set up a PostgreSQL database named 'hello' !# and user named 'hello_django' with a long passphrase!postgresql::server::db { 'hello':! user => 'hello_django',! password => postgresql_password('hello_django', 'xxxxxxxxxxxxx'),!}

database.pp

ADDING A USERpackage { ! 'sudo': ensure => present;! 'zsh': ensure => present;! 'git': ensure => present;!}!!user { 'michal':! password => 'xxxxxxxxxxxxx',! groups => ['staff', 'sudo'],! ensure => 'present',! managehome => 'true',! shell => '/usr/bin/zsh',! require => Package['zsh'],!}!!ssh_authorized_key{ 'michal@silver':! user => 'michal',! ensure => 'present', ! type => 'ssh-rsa', ! key => 'xxxxxxxxxxxxx', ! require => User['michal'],!}

my_account.pp

FEATURES• Store server configuration in text files (manifests)#

• Automatically configure packages, user accounts, services, etc.#

• Declarative language to describe machines#

• Store configuration of multiple machines on a central Puppet master server#

• Update configuration when manifest file changes

http://puppetlabs.com

MASTER OF PUPPETS

Master

Puppet Puppet Puppet Puppet

Webmin

YOUR SERVER GUI

https://my-server :10000

YOUR SERVER GUI

PROCESSES

INIT SCRIPTS

NETWORKING

FIREWALL

SERVICES

DATABASES

FEATURES• Graphically manage packages, user accounts, services#

• Install and configure server software#

• Monitor server activity and log files#

• Tweak and test settings#

• Execute commands and access files through the browser#

• Support for MySQL, PostgreSQL, Apache, PHP and many, many others

http://webmin.com

SHAMELESS PLUG

DEVOPS TOOLS FOR EVERYONE

1. Vagrant - create#

2. Puppet - configure#

3. Webmin - administer

michal@karzynski.pl DevCon 2014

THANK YOU

• http://www.ikea.com/us/en/catalog/products/60148701/#

• http://www.globtroter.pl/zdjecia/44393,norwegia,brak,latarnia,morska,w,lindesnes,x.html

michal@karzynski.pl DevCon 2014

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