2009-07-20 53 views
1

我正在尝试将Rails应用程序部署到运行Passenger的CentOS服务器。 SVN存储库和MySQL数据库分别托管在不同的机器上。 (换句话说,有一个总参与三个独立的主机。)如何为Capistrano指定单独的应用程序和数据库服务器?

这里是我的deploy.rb文件(从Passenger docs拍摄):

set :application, 'myapp' 
set :repository, 'svn+ssh://[email protected]_host.com/var/svn/myapp/trunk' 

# Changed this to true because I do in fact use sudo. 
set :use_sudo, true 

set :deploy_to, "/opt/deployed_rails_apps/#{application}" 

role :app, '[email protected]_host.com' 
role :web, '[email protected]_host.com' 

# Originally this had a "primary => true" option, but cap deploy:setup failed 
# when that option was present. 
role :db, '[email protected]_host.com'  

namespace :deploy do 
    task :start, :roles => :app do 
    run "touch #{current_release}/tmp/restart.txt" 
    end 

    task :stop, :roles => :app do 
    # Do nothing. 
    end 

    desc "Restart Application" 
    task :restart, :roles => :app do 
    run "touch #{current_release}/tmp/restart.txt" 
    end 
end 

cap deploy:setup似乎成功。至少没有错误。但cap deploy失败。有很多输出,但结果似乎是Capistrano试图将我的应用部署到我为:db指定的“角色” - 尝试将应用部署到主机的DB

servers: ["app_host.com", "db_host.com"] 

...

** [db_host :: out] Permission denied, please try again. 
** [db_host :: out] [email protected]_host.com's password: 

...

failed: "sh -c 'svn checkout -q -r184 svn+ssh://[email protected]_host.com/var/svn/myapp/trunk /opt/deployed_rails_apps/myapp/releases/20090720190553 && (echo 184 > /opt/deployed_rails_apps/myapp/releases/20090720190553/REVISION)'" on [email protected]_host.com 

回答

4

如果您不需要在数据库框中输入您的Rails代码,这是一个简单的办法 - 没有定义角色:db

cap deploy默认将代码放在您定义的所有角色的所有框中。

+0

谢谢。那么为什么包含在这么多例子中的“db”角色呢?在什么情况下,我想要在数据库框中添加应用程序代码? – Ethan 2009-07-20 20:08:10

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