Deployment By Capistrano

Capistrano Configuration

Step-1: Change in Gemfile

group :development do

gem 'capistrano'

gem 'capistrano3-puma'

gem 'capistrano-rails', require: false

gem 'capistrano-bundler', require: false

gem 'capistrano-rvm'

gem 'capistrano-sidekiq', github: 'seuros/capistrano-sidekiq'

end

Step-2: Run the following command to install the gems:

bundle install

Step-3: Run the generator to create a basic set of configuration files:

bundle exec cap install

Step-4: Change in Capfile:

# Load DSL and set up stages

require "capistrano/setup"

# Include default deployment tasks

require "capistrano/deploy"

# Load the SCM plugin appropriate to your project:

# require "capistrano/scm/hg"

# install_plugin Capistrano::SCM::Hg

# or

# require "capistrano/scm/svn"

# install_plugin Capistrano::SCM::Svn

# or

require "capistrano/scm/git"

install_plugin Capistrano::SCM::Git

# Include tasks from other gems included in your Gemfile

# For documentation on these, see for example:

# https://github.com/capistrano/rvm

# https://github.com/capistrano/rbenv

# https://github.com/capistrano/chruby

# https://github.com/capistrano/bundler

# https://github.com/capistrano/rails

# https://github.com/capistrano/passenger

require "capistrano/rvm"

# require "capistrano/rbenv"

# require "capistrano/chruby"

require "capistrano/bundler"

require "capistrano/rails/assets"

require "capistrano/rails/migrations"

require 'capistrano/puma'

# require "capistrano/passenger"

require 'capistrano/sidekiq'

# Load custom tasks from `lib/capistrano/tasks` if you have any defined

install_plugin Capistrano::Puma

Dir.glob("lib/capistrano/tasks/*.rake").each { |r| import r }

Step-5: Change in deploy.rb file:

# config valid for current version and patch releases of Capistrano

lock "~> 3.11.2"

set :application, "app_name"

set :repo_url, "git@github.com:user/repogitory.git"

# Default branch is :master

# ask :branch, proc { `git rev-parse --abbrev-ref HEAD`.chomp }

# Default deploy_to directory is /var/www/my_app

# set :deploy_to, '/var/www/my_app'

# Default value for :scm is :git

set :scm, :git

set :pty, false

# set :ssh_options, {

# :keys => '/home/nazrul/Desktop/shyftn/shyftn.pem'

# }

# Default value for :format is :pretty

# set :format, :pretty

# Default value for :log_level is :debug

# set :log_level, :debug

# Default value for :pty is false

# set :pty, true

server 'your server ip',

:user => 'username',

:roles => %w{web app db}

set :rvm_ruby_version, '2.6.3'

# Default value for :linked_files is []

set :linked_files, %w{config/application.yml config/database.yml}# config/secrets.yml}

# Default value for linked_dirs is []

set :linked_dirs, %w{log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system public/assets public/uploads}# pdf_files}

# Default value for default_env is {}

# set :default_env, { path: "/opt/ruby/bin:$PATH" }

# set :assets_prefix, 'pipeline_assets'

# Default value for keep_releases is 5

set :keep_releases, 5

namespace :deploy do

#before :deploy, "deploy:check_revision"

#after 'deploy:symlink:shared', 'deploy:compile_assets_locally'

after :finishing, 'deploy:cleanup'

#before 'deploy:setup_config', 'nginx:remove_default_vhost'

#after 'deploy:setup_config', 'nginx:reload'

#after 'deploy:setup_config', 'monit:restart'

#after 'deploy:publishing', 'deploy:restart'

desc 'Restart application'

task :restart do

on roles(:app), in: :sequence, wait: 5 do

# Your restart mechanism here, for example:

# execute :touch, release_path.join('tmp/restart.txt')

end

# after :publishing, :restart

after :restart, :clear_cache do

on roles(:web), in: :groups, limit: 3, wait: 10 do

# Here we can do anything such as:

# within release_path do

# execute :rake, 'cache:clear'

# end

end

task :upload_secret_files do

on roles(:all) do |host|

begin

execute "mkdir #{shared_path}/config"

rescue

end

upload! "config/application.yml", "#{shared_path}/config/application.yml"

end

desc 'Invoke a rake command on the remote server'

task :invoke, [:command] => 'deploy:set_rails_env' do |task, args|

on primary(:app) do

within current_path do

with :rails_env => fetch(:rails_env) do

rake args[:command]

end

Step-6: Change in deploy/production.rb File:

# server-based syntax

# ======================

# Defines a single server with a list of roles and multiple properties.

# You can define all roles on a single server, or split them:

# server "example.com", user: "deploy", roles: %w{app db web}, my_property: :my_value

# server "example.com", user: "deploy", roles: %w{app web}, other_property: :other_value

# server "db.example.com", user: "deploy", roles: %w{db}

# role-based syntax

# ==================

# Defines a role with one or multiple servers. The primary server in each

# group is considered to be the first unless any hosts have the primary

# property set. Specify the username and a domain or IP for the server.

# Don't use `:all`, it's a meta role.

# role :app, %w{deploy@example.com}, my_property: :my_value

# role :web, %w{user1@primary.com user2@additional.com}, other_property: :other_value

# role :db, %w{deploy@example.com}

# Configuration

# =============

# You can set any configuration variable like in config/deploy.rb

# These variables are then only loaded and set in this stage.

# For available Capistrano configuration variables see the documentation page.

# http://capistranorb.com/documentation/getting-started/configuration/

# Feel free to add new variables to customise your setup.

# Custom SSH Options

# ==================

# You may pass any option but keep in mind that net/ssh understands a

# limited set of options, consult the Net::SSH documentation.

# http://net-ssh.github.io/net-ssh/classes/Net/SSH.html#method-c-start

# Global options

# --------------

# set :ssh_options, {

# keys: %w(/home/rlisowski/.ssh/id_rsa),

# forward_agent: false,

# auth_methods: %w(password)

# }

# The server-based syntax can be used to override options:

# ------------------------------------

# server "example.com",

# user: "user_name",

# roles: %w{web app},

# ssh_options: {

# user: "user_name", # overrides user setting above

# keys: %w(/home/user_name/.ssh/id_rsa),

# forward_agent: false,

# auth_methods: %w(publickey password)

# # password: "please use keys"

# }

set :deploy_to, "/home/username/app_directory"

set :rails_env, "production"

set :branch, 'master'

Step-7: Change in environments/production.rb file

config.public_file_server.enabled = true

config.assets.compile = true