如何使用 Capistrano Deploy 文件夹

Question

Rails 5.2.3
Capistrano 3.11

我正在学习如何使用 Capistrano，但在这个阶段，不知道如何使用部署文件夹。当我安装 capistrano-rails gem 时，它创建了几个东西：

1. config/deploy 文件夹，包含 production.rb 和 staging.rb 文件

2. config/deploy.rb 文件

3. Capfile

我能否将 config/deploy.rb 文件保留为空，并将脚本放在 config/deploy 下的各个文件中（生产、登台等），然后假设我这样做时：

cap staging deploy

并假设它将使用 deploy/staging.rb 文件？

Answer 1

部署.rb

包含部署脚本的通用配置。像 puma 配置、repo url、sidekiq 等

例如

set :repo_url,        'repo_url.git'
set :application,     'app_name'
set :user,            'app'
set :puma_threads,    [4, 16]
set :puma_workers,    0

# Don't change these unless you know what you're doing
set :pty,             true
set :use_sudo,        true
set :deploy_via,      :remote_cache
set :deploy_to,       "/var/deploy/#{fetch(:application)}"
set :puma_bind,       "unix://#{shared_path}/tmp/sockets/#{fetch(:application)}-puma.sock"
set :puma_state,      "#{shared_path}/tmp/pids/puma.state"
set :puma_pid,        "#{shared_path}/tmp/pids/puma.pid"
set :puma_access_log, "#{release_path}/log/puma.access.log"
set :puma_error_log,  "#{release_path}/log/puma.error.log"
set :ssh_options, { forward_agent: true, user: fetch(:user), keys: %w(~/.ssh/id_rsa) }
set :puma_preload_app, true
set :puma_worker_timeout, nil
set :puma_init_active_record, true  # Change to false when not using ActiveRecord
set :bundle_flags, '--deployment'
set :sidekiq_config, -> { File.join(shared_path, 'config', 'sidekiq.yml') }

## Linked Files & Directories (Default None):
# set :linked_files, %w{config/database.yml}
# set :linked_dirs,  %w{bin log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system}

# append :linked_files, "config/database.yml", "config/secrets.yml", ".env"
set :linked_files, %w{.env}
# Default value for linked_dirs is []
append :linked_dirs, "log", "tmp/pids", "tmp/cache", "tmp/sockets", "public/system", "public/uploads", "vendor/bundle", "bundle"

namespace :deploy do
  desc "Make sure local git is in sync with remote."
  task :check_revision do
    on roles(:app) do
      unless `git rev-parse HEAD` == `git rev-parse origin/#{fetch(:branch)}`
        puts "WARNING: HEAD is not the same as origin/master"
        puts "Run `git push` to sync changes."
        exit
      end
    end
  end

  desc 'Initial Deploy'
  task :initial do
    on roles(:app) do
      before 'deploy:restart', 'puma:start'
      invoke 'deploy'
    end
  end

  desc 'Restart application'
   task :restart do
     on roles(:app), in: :sequence, wait: 5 do
       # invoke 'puma:restart'
     end
   end

  before :starting,     :check_revision
  after  :finishing,    :compile_assets
  after  :finishing,    :cleanup
  after  :finishing,    :restart
end

config/deploy/staging.rb

此文件包含环境和服务器特定配置。

server '1.2.1.255', user: 'ubuntu', roles: [:web, :app, :db], primary: true, ssh_options: { forward_agent: true }
set :rails_env, :staging
set :rack_env,  :staging
set :stage,     :staging
set :branch,    :staging

希望这会对您有所帮助。