Firstly, you must install capistrano gem if you haven't
> sudo gem install capistrano
next, run this code " capify . " on your root Rails App to generate deploy.rb file, don't forget follow dot (.) at end of script
/app_root$ capify .
after execute that code, deploy.rb file has locate at root_app/config/deploy.rb
in this case i'll set deploy to multiple environments (production, development and staging)
open up the deploy.rb file and writes follow codes, in this case i used git repository (you can setup that with other repository like svn etc...)
abort "needs capistrano 2" unless respond_to?(:namespace)
set :stages, %w(development staging production)
set :default_stage, "production"
require File.expand_path("#{File.dirname(__FILE__)}/../vendor/gems/capistrano-ext-1.2.1/lib/capistrano/ext/multistage")
# =============================================================================
# REQUIRED VARIABLES
# =============================================================================
set :application, "my_app" # CHANGE THIS LINE TO USE YOUR WEBSITE'S NAME
set :repository, "git@you_app_pat.git" # CHANGE THIS LINE TO USE YOUR SCM REPO
set :directory_path, "/opt/rails_apps/my_app"
# =============================================================================
# ROLES
# =============================================================================
role :web, "sample.com" # CHANGE THESE LINES TO USE YOUR OCS SERVER NAME
role :app, "sample.com"
role :db, "sample.com", :primary => true
# =============================================================================
# OPTIONAL VARIABLES
# =============================================================================
set :user, "root"
set :scm, :git
set :scm_username, "arul"
set :scm_passphrase, Proc.new { Capistrano::CLI.password_prompt('Git Password: ') }
set :runner, "www-data"
set :use_sudo, false
set :branch, "master"
set :deploy_via, :checkout
set :git_shallow_clone, 1
set :scm_verbose, true
default_run_options[:pty] = true
ssh_options[:forward_agent] = true
# =============================================================================
# TASKS
# =============================================================================
namespace :deploy do
task :restart, :roles => :app, :except => { :no_release => true } do
run "rm -rf #{current_path}/config/database.yml"
run "rm -rf #{current_path}/config/app_config.yml"
run "rm -rf #{current_path}/public/system"
run "rm -rf #{current_path}/public/images/photos"
run "ln -s #{directory_path}/shared/config/database.yml #{current_path}/config/database.yml"
run "ln -s #{directory_path}/shared/config/app_config.yml #{current_path}/config/app_config.yml"
run "ln -s #{directory_path}/#{stage}/shared/system #{current_path}/public/system"
run "ln -s #{directory_path}/#{stage}/shared/images/photos #{current_path}/public/images/photos"
run "touch #{File.join(current_path,'tmp','restart.txt')}"
end
end
let's make "deploy" directory to root_app/config/ and create new files there (production.rb, development.rb and staging.rb)
/app_root$ mkdir config/deploy
/app_root$ touch config/deploy/production.rb config/deploy/development.rb config/deploy/staging.rb
now, let's begin to coding hee..hee :)
write this codes for every files:
"production.rb" file
set :deploy_to, "/opt/rails_apps/#{application}/production"
set :rails_env, 'production'
"development.rb" file
set :deploy_to, "/opt/rails_apps/#{application}/development"
set :rails_env, 'development'
"staging.rb" file
set :deploy_to, "/opt/rails_apps/#{application}/staging"
set :rails_env, 'staging'
So, that's all
now you can deploy in every environmets, just run these codes:
=> production env
> cap production deploy
=> development env
> cap development deploy
=> staging env
> cap staging deploy
Hope Helpul :)
