rails hosting
DESCRIPTION
The presentation I gave at Fosdem 2009 on sunday Feb 8 in the Ruby/Rails Devroom.TRANSCRIPT
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Shared Rails HostingOpenminds::Hosting::Pro.clone
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Architecture
• Controlable medium-sized
• Virtualized (Xen 3.x.y)
• Debian Etch
• Nginx ( proxy’s)
• Webservers
• MySQL 5/5.1 - PostgreSQL on DB
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Architectuur
• Intel Dual Quad Core systemen / 16GB
• Centrale storage through iSCSI
• Tuning helps a lot
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Shared - version 1lighttpd & FastCGI (dispatch.fcgi)
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Version 1: pro’s
• fast
• lighttpd easily scriptable (lighty)
• lighttpd managed/monitors ruby processes
• mixing rails and php is possible
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V1: Mephisto search
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V1: Radiant page
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Version 1: lighty
• Perl-wrapper around lighttpd
• port locking
• force the production-env
• easy, short configuration files for clients
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Version 1: lighty
$HTTP["host"] =~ "̂ (www.)?example.openminds.be" { var.app = "example" accesslog.filename = base + "/logs/" + app + ".access.log" server.errorlog = base + "/logs/" + app + ".error.log"
load Rails with capistrano app}
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Version 1: con’s
• restart everything on change
• deploy => restart needed
• heavy sites => connection drops
• errors in logfiles
• errors in config files (new users)
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Version 1: con’s
• port hijacking
• reboot: server dies
• process management is hard
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Shared - Version 2Passenger (mod_rails)
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Passenger
• Convinced
• Central daemon - Central config
• Process-heaven
• acts_like :php_hosting
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Passenger: con’s
• No client-config files (sock)
• Maximum amount of processes limiting, not for minimum amount (startup delay)
• Apache 2: love & hate - small setup might give memory problems
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General problems
• Gems
• Deployment
• No TESTING!
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Non-sharedOpenminds::Hosting::Dedicated.clone
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Dedicatedapplication & helper applications
client decides
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Small DedicatedNginx + fair queueing + Mongrel cluster
Monit (m/monit)
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Medium DedicatedPassenger (?)
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Large DedicatedA la tête du client
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Dedicatedsudo
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TechnologyMongrel / Evented Mongrel / Ebb / Thin / Nginx /
Apache / Passenger / Merb / Enterprise Ruby / JRuby / Glassfish / ...
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Common
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Rails version1 ) install new rails gem
2 ) Open support system
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Gem-versionsSync
rake gems:freeze
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DeploymentCapistrano
Provide recipy
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PoundNo-worry-ssl
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Rails is slowDeveloper
Hosting
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Rails hostingInhouse Rails knowledge is needed
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Warning
• database.yml
• restart application
• read your logs
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Q&A
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WhoBernard Grymonpon / wonko([_\.]be)?Openminds BVBA - www.openminds.be