Using Vagrant for Rails development

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This presentation is a basic introduction to using Vagrant for virtualized Rails development. It covers the basics of Vagrant, provisioning using puppet, and more advanced usage such as multi-vm configurations.

Technology

Using Vagrant for Rails
Development

Dan Pilone
www.element84.com

Copyright 2012 Element 84, LLC
1

About Us

Element 84, LLC
Customer focused agile development and training
End to end Web and Mobile development
Customers include NASA, Raytheon, Fidelity
Investments, Yacht.com, Spaceﬁndr.com

Copyright 2012 Element 84, LLC
2

Client A

★Ruby 1.8.7
★Rails 2.3
★MySQL
★Redis
★ImageMagick
★EngineYard

Copyright 2012 Element 84, LLC

Client B

★Ruby 1.9.3
★Rails 3.0
★MySQL 5.1
★Passenger
★WebKit + Qt

Copyright 2012 Element 84, LLC

Client C

★JRuby 1.6
★Rails 3.0-3.2
★Oracle RAC
★ElasticSearch
★9 node HA+LB

Copyright 2012 Element 84, LLC

RVM + Bundler isn’t enough....

Copyright 2012 Element 84, LLC

Vagrant!

Uses VirtualBox to provide development VM
environments
Lets you CM your development environment with your
code
Provides transparent access from your dev box

Copyright 2012 Element 84, LLC

Vagrant boxes are
available for nearly every
ﬂavor of linux...

Copyright 2012 Element 84, LLC

vagrant box add mybox http://mybox

Copyright 2012 Element 84, LLC

vagrant box add mybox http://mybox

vagrant init*

Copyright 2012 Element 84, LLC * technically the VirtualBox VM
isn’t created until the ﬁrst “up”

vagrant box add mybox http://mybox

vagrant init*

vagrant up

Copyright 2012 Element 84, LLC * technically the VirtualBox VM
isn’t created until the ﬁrst “up”

/vagrant

Copyright 2012 Element 84, LLC

vagrant box add mybox http://mybox

vagrant init*

vagrant up

vagrant provision
Copyright 2012 Element 84, LLC * technically the VirtualBox VM
isn’t created until the ﬁrst “up”

Advanced Vagrant...

Copyright 2012 Element 84, LLC

Making your own boxes

Create a basic Vagrant setup
Provision and conﬁgure as desired
Create a package speciﬁc Vagrantﬁle
Run vagrant package
Proﬁt Distribute to teammates

Copyright 2012 Element 84, LLC

Multi-VM Conﬁguration
Used to simulate multi-
tier systems
Can simulate node
failure, load balancing,
cluster connectivity,
etc.
Uses host-only
networking

iPhone Overview - Copyright 2010 Element 84, LLC

Crazy demo... maybe.

Copyright 2012 Element 84, LLC

Possible issues
Disk IO can be slow as the number of ﬁles grow due to
VirtualBox issues.
Use NFS in these situations.
Memory usage can get tight as number and size of
VMs grow.
Buy more memory...
Not really designed for performance testing

Copyright 2012 Element 84, LLC

Tips
Don’t forget to exclude .vagrant directory from CM
Use real provisioning (e.g. Puppet, Chef, etc.) Seriously.
Spend the time. Don’t cheat.
Consider building a set of project speciﬁc boxes and
using those instead of having everyone reprovision from
base box.
Vagrant has great Rake integration - consider using this
for any repetitive tasks that have to be done inside the
VM.

Copyright 2012 Element 84, LLC

More information

Me: Dan Pilone (dan@element84.com, @danpilone)
Vagrant: http://vagrantup.com
Puppet: http://puppetlabs.com/

Copyright 2012 Element 84, LLC

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Using Vagrant for Rails development

2. About Us Element 84, LLC Customer focused agile development and training End to end Web and Mobile development Customers include NASA, Raytheon, Fidelity Investments, Yacht.com, Spaceﬁndr.com Copyright 2012 Element 84, LLC 2

3. About Us Element 84, LLC Customer focused agile development and training End to end Web and Mobile development Customers include NASA, Raytheon, Fidelity Investments, Yacht.com, Spaceﬁndr.com Copyright 2012 Element 84, LLC 2

35. Making your own boxes Create a basic Vagrant setup Provision and configure as desired Create a package specific Vagrantfile Run vagrant package Profit Distribute to teammates Copyright 2012 Element 84, LLC

36. Multi-VM Conﬁguration Used to simulate multi- tier systems Can simulate node failure, load balancing, cluster connectivity, etc. Uses host-only networking iPhone Overview - Copyright 2010 Element 84, LLC

39. Possible issues Disk IO can be slow as the number of ﬁles grow due to VirtualBox issues. Use NFS in these situations. Memory usage can get tight as number and size of VMs grow. Buy more memory... Not really designed for performance testing Copyright 2012 Element 84, LLC

40. Tips Don’t forget to exclude .vagrant directory from CM Use real provisioning (e.g. Puppet, Chef, etc.) Seriously. Spend the time. Don’t cheat. Consider building a set of project speciﬁc boxes and using those instead of having everyone reprovision from base box. Vagrant has great Rake integration - consider using this for any repetitive tasks that have to be done inside the VM. Copyright 2012 Element 84, LLC

Editor's Notes

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This is no fun. We don&#x2019;t want to develop in a VM using vim....\n
We want access to our native environment\n
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Vagrant is technically a gem but as of v1.0 (March 2012) there are packages for OSX, Windows, Ubuntu, Debian, Redhat, etc.\n
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* technically the VirtualBox VM isn&#x2019;t created until the first &#x201C;up&#x201D;\n
* technically the VirtualBox VM isn&#x2019;t created until the first &#x201C;up&#x201D;\n
* technically the VirtualBox VM isn&#x2019;t created until the first &#x201C;up&#x201D;\n
* technically the VirtualBox VM isn&#x2019;t created until the first &#x201C;up&#x201D;\n
* technically the VirtualBox VM isn&#x2019;t created until the first &#x201C;up&#x201D;\n
* technically the VirtualBox VM isn&#x2019;t created until the first &#x201C;up&#x201D;\n
* technically the VirtualBox VM isn&#x2019;t created until the first &#x201C;up&#x201D;\n
Demo1 showing a box added to vagrant\nvagrant init lucid64\nvagrant up\nvagrant ssh\nvagrant status\n\n
But how do we get here?\n
Demo 2: basic Ruby app:\nvagrant up\nShow mounted filesystem\nstart rails\ncurl\n
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Demo2 configured for port forwarding\nvagrant reload\nvagrant ssh\nstartup rails\nhit with local browser\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
We&#x2019;re just getting warmed up.... (but my talk is almost over...)\n
\n
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Demo 4:\nvagrant up\nvagrant ssh es1\ncd elastic....\n./bin/elasticsearch -f\n
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Using Vagrant for Rails development

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