Created
January 29, 2012 05:34
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Deploy with Vagrant gem
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# /etc/nginx/sites-available/default | |
upstream my_site { | |
# fail_timeout=0 means we always retry an upstream even if it failed | |
# to return a good HTTP response (in case the Unicorn master nukes a | |
# single worker for timing out). | |
# for UNIX domain socket setups: | |
server unix:/tmp/my_site.socket fail_timeout=0; | |
} | |
server { | |
# if you're running multiple servers, instead of "default" you should | |
# put your main domain name here | |
listen 80 default; | |
# you could put a list of other domain names this application answers | |
# server_name my_site.example.com; | |
root /home/vagrant/projects/demoapp/current/public; | |
access_log /var/log/nginx/my_site_access.log; | |
rewrite_log on; | |
location / { | |
#all requests are sent to the UNIX socket | |
proxy_pass http://my_site; | |
proxy_redirect off; | |
proxy_set_header Host $host; | |
proxy_set_header X-Real-IP $remote_addr; | |
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; | |
client_max_body_size 10m; | |
client_body_buffer_size 128k; | |
proxy_connect_timeout 90; | |
proxy_send_timeout 90; | |
proxy_read_timeout 90; | |
proxy_buffer_size 4k; | |
proxy_buffers 4 32k; | |
proxy_busy_buffers_size 64k; | |
proxy_temp_file_write_size 64k; | |
} | |
# if the request is for a static resource, nginx should serve it directly | |
# and add a far future expires header to it, making the browser | |
# cache the resource and navigate faster over the website | |
# this probably needs some work with Rails 3.1's asset pipe_line | |
location ~ ^/(images|javascripts|stylesheets|system)/ { | |
root /home/vagrant/projects/demoapp/current/public; | |
expires max; | |
break; | |
} | |
} |
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# config/deploy.rb | |
#require "bundler/capistrano" | |
set :scm, :git | |
set :repository, "git@github.com:itsNikolay/demoapp.git" | |
set :branch, "origin/master" | |
set :migrate_target, :current | |
set :ssh_options, { :forward_agent => true } | |
set :rails_env, "production" | |
set :deploy_to, "/home/vagrant/projects/demoapp" | |
set :normalize_asset_timestamps, false | |
set :user, "vagrant" | |
set :group, "staff" | |
set :use_sudo, true | |
role :web, "33.33.33.10" | |
role :app, "33.33.33.10" | |
role :db, "33.33.33.10", :primary => true | |
set(:latest_release) { fetch(:current_path) } | |
set(:release_path) { fetch(:current_path) } | |
set(:current_release) { fetch(:current_path) } | |
set(:current_revision) { capture("cd #{current_path}; git rev-parse --short HEAD").strip } | |
set(:latest_revision) { capture("cd #{current_path}; git rev-parse --short HEAD").strip } | |
set(:previous_revision) { capture("cd #{current_path}; git rev-parse --short HEAD@{1}").strip } | |
default_environment["RAILS_ENV"] = 'production' | |
# Use our ruby-1.9.2-p290@my_site gemset | |
default_run_options[:shell] = 'bash' | |
namespace :deploy do | |
desc "Deploy your application" | |
task :default do | |
update | |
restart | |
end | |
desc "Setup your git-based deployment app" | |
task :setup, :except => { :no_release => true } do | |
dirs = [deploy_to, shared_path] | |
dirs += shared_children.map { |d| File.join(shared_path, d) } | |
run "#{try_sudo} mkdir -p #{dirs.join(' ')} && #{try_sudo} chmod g+w #{dirs.join(' ')}" | |
run "git clone #{repository} #{current_path}" | |
end | |
task :cold do | |
update | |
migrate | |
end | |
task :update do | |
transaction do | |
update_code | |
end | |
end | |
desc "Update the deployed code." | |
task :update_code, :except => { :no_release => true } do | |
run "cd #{current_path}; git fetch origin; git reset --hard #{branch}" | |
finalize_update | |
end | |
desc "Update the database (overwritten to avoid symlink)" | |
task :migrations do | |
transaction do | |
update_code | |
end | |
migrate | |
restart | |
end | |
task :finalize_update, :except => { :no_release => true } do | |
run "chmod -R g+w #{latest_release}" if fetch(:group_writable, true) | |
# mkdir -p is making sure that the directories are there for some SCM's that don't | |
# save empty folders | |
run <<-CMD | |
rm -rf #{latest_release}/log #{latest_release}/public/system #{latest_release}/tmp/pids && | |
mkdir -p #{latest_release}/public && | |
mkdir -p #{latest_release}/tmp && | |
ln -s #{shared_path}/log #{latest_release}/log && | |
ln -s #{shared_path}/system #{latest_release}/public/system && | |
ln -s #{shared_path}/pids #{latest_release}/tmp/pids && | |
ln -sf #{shared_path}/database.yml #{latest_release}/config/database.yml | |
CMD | |
if fetch(:normalize_asset_timestamps, true) | |
stamp = Time.now.utc.strftime("%Y%m%d%H%M.%S") | |
asset_paths = fetch(:public_children, %w(images stylesheets javascripts)).map { |p| "#{latest_release}/public/#{p}" }.join(" ") | |
run "find #{asset_paths} -exec touch -t #{stamp} {} ';'; true", :env => { "TZ" => "UTC" } | |
end | |
end | |
desc "Zero-downtime restart of Unicorn" | |
task :restart, :except => { :no_release => true } do | |
run "kill -s USR2 `cat /tmp/unicorn.my_site.pid`" | |
end | |
desc "Start unicorn" | |
task :start, :except => { :no_release => true } do | |
run "cd #{current_path} ; bundle exec unicorn_rails -c config/unicorn.rb -D" | |
end | |
desc "Stop unicorn" | |
task :stop, :except => { :no_release => true } do | |
run "kill -s QUIT `cat /tmp/unicorn.my_site.pid`" | |
end | |
namespace :rollback do | |
desc "Moves the repo back to the previous version of HEAD" | |
task :repo, :except => { :no_release => true } do | |
set :branch, "HEAD@{1}" | |
deploy.default | |
end | |
desc "Rewrite reflog so HEAD@{1} will continue to point to at the next previous release." | |
task :cleanup, :except => { :no_release => true } do | |
run "cd #{current_path}; git reflog delete --rewrite HEAD@{1}; git reflog delete --rewrite HEAD@{1}" | |
end | |
desc "Rolls back to the previously deployed version." | |
task :default do | |
rollback.repo | |
rollback.cleanup | |
end | |
end | |
end | |
def run_rake(cmd) | |
run "cd #{current_path}; #{rake} #{cmd}" | |
end |
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# /etc/nginx/nginx.conf | |
user vagrant staff; | |
# Change this depending on your hardware | |
worker_processes 1; | |
pid /var/run/nginx.pid; | |
events { | |
worker_connections 1024; | |
multi_accept on; | |
} | |
http { | |
sendfile on; | |
tcp_nopush on; | |
tcp_nodelay off; | |
# server_tokens off; | |
# server_names_hash_bucket_size 64; | |
# server_name_in_redirect off; | |
include /etc/nginx/mime.types; | |
default_type application/octet-stream; | |
access_log /var/log/nginx/access.log; | |
error_log /var/log/nginx/error.log; | |
gzip on; | |
gzip_disable "msie6"; | |
# gzip_vary on; | |
gzip_proxied any; | |
gzip_min_length 500; | |
# gzip_comp_level 6; | |
# gzip_buffers 16 8k; | |
# gzip_http_version 1.1; | |
gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript; | |
## | |
# Virtual Host Configs | |
## | |
include /etc/nginx/conf.d/*.conf; | |
include /etc/nginx/sites-enabled/*; | |
} |
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# config/unicorn.rb | |
# Set environment to development unless something else is specified | |
env = ENV["RAILS_ENV"] || "development" | |
# See http://unicorn.bogomips.org/Unicorn/Configurator.html for complete | |
# documentation. | |
worker_processes 1 | |
# listen on both a Unix domain socket and a TCP port, | |
# we use a shorter backlog for quicker failover when busy | |
listen "/tmp/my_site.socket", :backlog => 64 | |
#listen 8080 | |
# Preload our app for more speed | |
preload_app true | |
# nuke workers after 30 seconds instead of 60 seconds (the default) | |
timeout 30 | |
pid "/tmp/unicorn.my_site.pid" | |
# Production specific settings | |
if env == "production" | |
# Help ensure your application will always spawn in the symlinked | |
# "current" directory that Capistrano sets up. | |
working_directory "/home/vagrant/projects/demoapp/current" | |
# feel free to point this anywhere accessible on the filesystem | |
user 'vagrant', 'staff' | |
shared_path = "/home/vagrant/projects/demoapp/shared" | |
stderr_path "#{shared_path}/log/unicorn.stderr.log" | |
stdout_path "#{shared_path}/log/unicorn.stdout.log" | |
end | |
before_fork do |server, worker| | |
# the following is highly recomended for Rails + "preload_app true" | |
# as there's no need for the master process to hold a connection | |
if defined?(ActiveRecord::Base) | |
ActiveRecord::Base.connection.disconnect! | |
end | |
# Before forking, kill the master process that belongs to the .oldbin PID. | |
# This enables 0 downtime deploys. | |
old_pid = "/tmp/unicorn.my_site.pid.oldbin" | |
if File.exists?(old_pid) && server.pid != old_pid | |
begin | |
Process.kill("QUIT", File.read(old_pid).to_i) | |
rescue Errno::ENOENT, Errno::ESRCH | |
# someone else did our job for us | |
end | |
end | |
end | |
after_fork do |server, worker| | |
# the following is *required* for Rails + "preload_app true", | |
if defined?(ActiveRecord::Base) | |
ActiveRecord::Base.establish_connection | |
end | |
# if preload_app is true, then you may also want to check and | |
# restart any other shared sockets/descriptors such as Memcached, | |
# and Redis. TokyoCabinet file handles are safe to reuse | |
# between any number of forked children (assuming your kernel | |
# correctly implements pread()/pwrite() system calls) | |
end |
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