代码之家  ›  专栏  ›  技术社区  ›  gabe

如何部署Rails 2.3.2应用程序,从顶部使用Capistrano(对于FastCGI)?

  •  0
  • gabe  · 技术社区  · 16 年前

    免责声明:我是Rails和Capistrano的一个Noob(但是是一个中级的.NET C开发人员),正在努力了解更多信息。

    我一直是最艰难的时间得到一个Capistrano开发过程的建立。以下是目前为止我的deploy.rb:

    
    set :application, "MyAppName"
    set :domain, "domainname"
    set :user, "userid" 
    set :repository,  "svn+ssh://#{user}@#{domain}/home/#{user}/svn/#{application}/trunk"
    set :rails_env, :production
    set :chmod755, %w(app config db lib public vendor script tmp public/dispatch.cgi public/dispatch.fcgi public/dispatch.rb)
    set :deploy_to, "/home/#{user}/apps/#{application}"
    set :use_sudo, false
    set :deploy_via, :checkout
    set :group_writable, false
    default_run_options[:pty] = true
    role :app, domain
    role :web, domain
    role :db,  domain, :primary => true
    

    这是我的档案:

    
    load 'deploy' if respond_to?(:namespace) # cap2 differentiator
    Dir['vendor/plugins/*/recipes/*.rb'].each { |plugin| load(plugin) }
    load 'config/deploy'
    
    namespace :deploy do
    
      task :restart, :roles => :app do
        run "#{current_path}/script/process/reaper --dispatcher=dispatch.fcgi"
      end
    
      desc "Set the proper permissions for directories and files on HostingRails accounts"
      task :after_deploy do
        run(chmod755.collect do |item|
          "chmod 755 #{current_path}/#{item}"
        end.join(" && "))
      end
    
    end
    
    1. Rails 2.3.2没有脚本/进程目录,因此重新启动任务根本无法工作。我该怎么解决这个问题?
    2. 部署应用程序时,是否有方法将environment.rb中的rails_env变量设置为“production”(“set:rails_env,:production”不是这样做的)?
    3. 另外,这两个文件中还有什么遗漏吗?
    2 回复  |  直到 16 年前
        1
  •  1
  •   Chris Doggett    16 年前

    这是我的deploy.rb,很久没有更新过了。我运行了两个SED命令来设置我的:更新后代码任务中的环境。我确信有一种更简单的方法,但这是我目前的方法。

    require 'erb'
    
    before "deploy:setup", :db
    after "deploy:update_code", "db:symlink" 
    after "deploy", "deploy:cleanup"
    
    def prompt_with_default(var, default)
      set(var) do
        Capistrano::CLI.ui.ask "Enter #{var} [#{default}] : "
      end
    
      set var, default if eval("#{var.to_s}.empty?")
    end
    
    default_run_options[:pty] = true 
    
    set :rake, "/usr/local/bin/rake"
    
    set :user, "your username"
    set :application, "application name"
    set :repository,  "svn repository path"
    set :host, "domain name"
    set :db_host, "DB host name"
    set :db_user, "DB user name"
    set :db_prefix, "any DB name prefix your host might require"
    set :rails_env, "production"
    
    set :deploy_to, "/home/username/rails/#{host}" # your deployment directory
    
    role :app, host
    role :web, host
    role :db,  host, :primary => true
    
    set :use_sudo, false
    set :checkout, "export"
    
    #
    # TASKS
    #
    desc "Tasks to execute after code update"
    task :after_update_code, :roles => [:app, :db, :web] do
      # Make sure we're running in production
      run "sed -i -e '/ENV.*RAILS_ENV/s/# //' #{release_path}/config/environment.rb"
      run "sed -i -e '/ENV.*RAILS_ENV/s/production/#{rails_env}/' #{release_path}/config/environment.rb"
    
      # Add banned IPs
      deny_lines = []
      File.readlines("#{release_path}/config/banned_ips").each {|ip|
        deny_lines << "deny from #{ip}"
      }
    
      ip_ban_block = <<EOBAN
    # Bannination
    order allow,deny
    #{deny_lines.join}
    allow from all
    EOBAN
    
      run "sed -i -e 's/# BANNED IPS/#{ip_ban_block}/' #{release_path}/public/.htaccess"
    
      run "chmod +x #{release_path}/script/runner" 
      run "chmod +x #{release_path}/script/process/reaper" 
      run "chmod +x #{release_path}/script/process/spawner" 
      run "chmod 755 #{release_path}/public/dispatch.*" 
    end
    
    desc "Restarting after deployment"
    task :after_deploy, :roles => [:app, :db, :web] do
      run "cd #{current_path} && rake RAILS_ENV=production db:sessions:clear tmp:clear"
      # fix permissions
      run "dos2unix #{release_path}/public/dispatch.*"
      run "dos2unix #{release_path}/public/.htaccess"
      run "chmod -R 755 #{release_path}"
      run "chmod -R 775 #{release_path}/log #{release_path}/tmp #{release_path}/script"
      run "find #{release_path}/ | xargs touch"
      run "touch #{deploy_to}/current/public/dispatch.fcgi"
    end
    
    desc "Restarting after rollback"
    task :after_rollback, :roles => [:app, :db, :web] do
      run "touch #{deploy_to}/current/public/dispatch.fcgi"
    end
    
    namespace :db do
      desc "Create database yaml in shared path" 
      task :default do
      prompt_with_default(:db_password, "")
      db_config = ERB.new <<-EOF
    base: &base
      adapter: mysql
      port: 3306
      host: #{db_host}
      username: #{db_user}
      password: #{db_password}
    
    development:
      database: #{db_prefix}#{application}development
      <<: *base
    
    test:
      database: #{db_prefix}#{application}test
      <<: *base
    
    production:
      database: #{db_prefix}#{application}production
      <<: *base
    EOF
    
        run "mkdir -p #{shared_path}/config" 
        put db_config.result, "#{shared_path}/config/database.yml" 
      end
    
      desc "Make symlink for database yaml" 
      task :symlink do
        run "ln -nfs #{shared_path}/config/database.yml #{release_path}/config/database.yml" 
      end
    end
    

    一旦我设置了变量,我就有了一个运行的bash脚本:

    svn export $svn_path . --force
    cap deploy
    

    这会要求我输入两次密码。一次用于从SVN导出,另一次用于提示在共享路径中自动生成database.yml。

        2
  •  2
  •   Rufo Sanchez    16 年前

    更新了我的答案,见3…

    我不使用fastcgi进行部署,但我想到了一些事情:

    1. 过程脚本已从Rails核心移出并移入 a plugin ,您可以从Github获取。
    2. 查看my deploy.rb文件,您可能需要通过命令行将rails环境变量传递到脚本中,类似于:

      run #{current_path}/script/process/reaper RAILS_ENV=#{rails_env} --dispatcher=dispatch.fcgi

    3. 编辑:事实上,将任务放在capfile中而不是deploy.rb中有点奇怪-尽管查看 this thread on the Capistrano Google Group 不完全是皱眉。我想这取决于你/你的团队。

    希望这能为你指明正确的方向。