Deployment Patterns in the Ruby on Rails World

DEPLOYMENT PATTERNSIN THE RUBY on RAILS WORLD
Devopsdays India
2011

Nikhil Mungel
Ajey Gore
@AjeyGore
@hyfather

Rails
Apache
Apache
Apache
Apache
Passenger

* Ruby on Rails
/app
/config
/db
/doc
/lib
/log
/public
/script
/test
/tmp
/vendor
config.ru
README
Rakefile

run updated script
App
Server
App
Server
Pull
Pull
Git
1
2
3
signal over SSH
Local Repository
contains all scripts

SCM-aware
deployments
fast and effortless
dev and deployment on ruby
transfers only delta
devenv mess can overflow
admin-hell for IT/Ops
compiling native gems

Git
Pull
CI
Runs
Tests
Tests
Code
$ deploy 77ef185d7
$ deploy 77ef185d7
QA
Prod.
Staging

Git
Pull
Tests
CI
Runs
Tests
Code
$ deploy 77ef185d7
$ deploy 77ef185d7
QA
Staging
Production

CI
Runs
Tests

Git
Pull
Unit
Tests
CI
Perf
Tests
Functional
Tests

Git
Pull
Unit
Tests
CI
Functional
Tests
Push a Tag
tag: mainline-234
Perf
Tests

Git
Pull
Unit
Tests
CI
Functional
Tests
Perf
Tests

Git
CI
mainline
unit
tests
func
tests
perf
tests

mainline
unit
tests
func
tests
perf
tests
1
2
3
tag
Git
on remote
machine
on CI
machine
deploy
emit
consume
package

RPM
mainline
unit
tests
func
tests
perf
tests
tarball
war
2
1
tag
Git
rubygem
deb
3
on remote
machine
on CI
machine
deploy
emit
package
consume

tarball
better than a directory
extremely simple to setup
no metadata

RPM, deb
stored in a repository
standard locations -- /etc
first-class system service
effected by chef/puppet
toolchain expertise
maintain a repository
less common

rubygem
tarball with metadata
effected by chef/puppet
stored in a repository
maintain a gem repository

mainline
unit
tests
func
tests
perf
tests
upload to a repo
2
expose over
CI artifact API
1
tag
Git
3
on remote
machine
on CI
machine
deploy
emit
package
consume

mainline
unit
tests
func
tests
perf
tests
2
1
tag
Git
3
on remote
machine
on CI
machine
deploy
emit
package
consume

Config Management
gem install
yum install
apt-get install

/etc
my.cnf
httpd.conf
ssh_config

/etc
database.yml
.htaccess
private keys for external systems

/etc/myapp
First Class
Linux Application Software

bundle install --deployment
install to vendor/bundle
bundle install --without test development
bundle package
.gem files to vendor/cache
bundle install --local

Thanks!
@hyfather
@AjeyGore

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Deployment Patterns in the Ruby on Rails World

by Nikhil Mungel on Aug 28, 2011

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