如何從邁納部署腳本運行定製耙任務

Question

我正在使用邁納部署我的應用程序。我指定了我想部署應用程序的env（staging/production）。

mina deploy on=staging --verbose 

我已經保存在deploy.rb應用ENV作爲

app_env = ENV['on'] || 'staging' 

我有一個耙的任務，需要生產數據庫的備份。到目前爲止，我在控制檯上明確執行了這個rake任務，因爲我想在每個生產部署上運行該任務。我該怎麼做？

Answer 1

小米對此有特殊的語法。距離Mina控制檯的幫助頁面：

Server tasks: 
    ... 
    mina rails[arguments] # Execute a Rails command in the current deploy 
    mina rake[arguments] # Execute a Rake command in the current deploy 
    mina run[command]  # Runs a command in the server 
    ... 

因此，從命令行：

$ mina 'rake[deploy:backup_db]' 

或者米娜定義任務部署配置文件（config/deploy.rb）：

task :backup_db do 
    invoke :'rake[deploy:backup_db]' 
end 

Answer 2

讓它工作。更改如下：

... 
app_env = ENV['on'] || 'staging' 
... 

desc "Deploys the current version to the server." 
task :deploy => :environment do 
    deploy do 
    # Put things that will set up an empty directory into a fully set-up 
    # instance of your project. 
    invoke 'production_backup' if app_env == 'production' 
    invoke :'git:clone' 
    invoke :'deploy:link_shared_paths' 
    invoke :'bundle:install' 
    invoke :'rails:assets_precompile' 

    to :launch do 
     invoke 'application:restart' 
    end 
    end 
end 

task :production_backup do 
    queue "cd #{deploy_to}/current ; bundle exec rake deploy:backup_db" 
end