运行推动使用 Capistrano 3 进行生产

Question

对于运行 Rpush，我在config/deploy.rb

中写了这个

 after :publishing, 'deploy:restart'

  after :finishing, 'deploy:cleanup'

  after :finished, :restart_rpush do

    on roles(:web) do
        within release_path do
            with rails_env: fetch(:rails_env) do
                execute :bundle, :exec, "rpush stop -e #{fetch(:rails_env)}"
                execute :bundle, :exec, "rpush start -e #{fetch(:rails_env)}"
            end
        end
    end
  end
end

部署时出现此错误：

DEBUG [76ef4791]    * Rpush isn't running? 
/home/dev/proteqtor/releases/20150714065629/tmp/rpush.pid does not exist.

Rpush 不是运行。这个问题的原因可能是什么？

Answer 1

我相信这是因为，由于 Rpush 不是运行ning，所以您得到了 execute :bundle, :exec, "rpush stop -e #{fetch(:rails_env)}" 的未捕获异常。 IE。为什么运行 rpush stop 如果不是运行ning？

相反，首先测试（使用 Capistrano 3 的 test command）pid 文件是否存在于给定路径中，只有运行存在才停止，否则运行开始：

desc 'Restart rpush'
task :restart_rpush do
  on roles(:web) do
    within release_path do
      with rails_env: fetch(:rails_env) do
        if test('[ -f /path/to/my/pid/file ]')
          # Rpush is running
          execute :bundle, :exec, "rpush stop -e #{fetch(:rails_env)}"
          execute :bundle, :exec, "rpush start -e #{fetch(:rails_env)}"
        else
          # Rpush is not running
          execute :bundle, :exec, "rpush start -e #{fetch(:rails_env)}"
        end
      end
    end
  end
end

after :finished, :restart_rpush

运行推动使用 Capistrano 3 进行生产

Running rpush on production using capistrano 3

ruby-on-rails-4

capistrano3

运行 推动使用 Capistrano 3 进行生产

Running rpush on production using capistrano 3

ruby-on-rails-4

capistrano3

运行推动使用 Capistrano 3 进行生产