錯誤使用Capistrano的

Question

部署Sidekiq到Ubuntu我在這裏跟隨方向Sidekiq與Capistrano的Ubuntu的整合：https://github.com/mperham/sidekiq/wiki/Deploying-to-Ubuntu

我在與Capistrano的一部分的問題。

我把這個代碼在deploy.rb末：

# For capistrano 3 
namespace :sidekiq do 
    task :quiet do 
    # Horrible hack to get PID without having to use terrible PID files 
    puts capture("kill -USR1 $(sudo initctl status workers | grep /running | awk '{print $NF}') || :") 
    end 
    task :restart do 
    execute :sudo, :initctl, :restart, :workers 
    end 
end 

after 'deploy:starting', 'sidekiq:quiet' 
after 'deploy:reverted', 'sidekiq:restart' 
after 'deploy:published', 'sidekiq:restart' 

當我運行cap production deploy我得到這個錯誤：

cap aborted! 
NoMethodError: undefined method `capture' for main:Object 
config/deploy.rb:67:in `block (2 levels) in <top (required)>' 
/Users/user/.rvm/gems/ruby-2.1.2@project/gems/capistrano-3.2.1/lib/capistrano/dsl/task_enhancements.rb:12:in `block in after' 
/Users/user/.rvm/gems/ruby-2.1.2@project/gems/capistrano-3.2.1/lib/capistrano/dsl.rb:15:in `invoke' 
/Users/user/.rvm/gems/ruby-2.1.2@project/gems/capistrano-3.2.1/lib/capistrano/tasks/framework.rake:65:in `block (2 levels) in <top (required)>' 
/Users/user/.rvm/gems/ruby-2.1.2@project/gems/capistrano-3.2.1/lib/capistrano/tasks/framework.rake:64:in `each' 
/Users/user/.rvm/gems/ruby-2.1.2@project/gems/capistrano-3.2.1/lib/capistrano/tasks/framework.rake:64:in `block in <top (required)>' 
/Users/user/.rvm/gems/ruby-2.1.2@project/gems/capistrano-3.2.1/lib/capistrano/application.rb:15:in `run' 
/Users/user/.rvm/gems/ruby-2.1.2@project/gems/capistrano-3.2.1/bin/cap:3:in `<top (required)>' 
/Users/user/.rvm/gems/ruby-2.1.2@project/bin/cap:23:in `load' 
/Users/user/.rvm/gems/ruby-2.1.2@project/bin/cap:23:in `<main>' 
/Users/user/.rvm/gems/ruby-2.1.2@project/bin/ruby_executable_hooks:15:in `eval' 
/Users/user/.rvm/gems/ruby-2.1.2@project/bin/ruby_executable_hooks:15:in `<main>' 
Tasks: TOP => sidekiq:quiet 
(See full trace by running task with --trace) 
The deploy has failed with an error: #<NoMethodError: undefined method `capture' for main:Object> 

顯然，這是捕獲功能這是不確定的，但什麼是問題？我把代碼放在正確的文件deploy.rb？我需要什麼嗎？

Answer 1

您必須指定哪個服務器上運行的代碼。例如：

namespace :sidekiq do 
    task :quiet do 
    # Horrible hack to get PID without having to use terrible PID files 
    on roles(:app) do 
     puts capture("kill -USR1 $(sudo initctl status workers | grep /running | awk '{print $NF}') || :") 
    end 
    end 
    task :restart do 
    on roles(:app) do 
     execute :sudo, :initctl, :restart, :workers 
    end 
    end 
end 

Answer 2

嘗試要求sidekiq寶石，或者看看capistrano with sidekiq integration