Capistrano

http://blog.csdn.net/qzier_go/article/details/35971091

https://github.com/capistrano/capistrano

https://ruby-china.org/topics/18616

http://dl528888.blog.51cto.com/2382721/1270670

http://www.cnblogs.com/iosdev/p/3349405.html

http://bbs.apiusage.com/read/297

1 安装

gem install capistrano

 

// For mutiple stages

gem install capistrano-ext

 2 准备

capify .

 这个命令会创建Capfile，和 config/deploy.rb 文件。Capfile会帮助加在一些合适的库文件和配置。

配置deploy.rb

set :application, "applciation_name"

 

//git

set :scm, :git

set :repository, "git@www.xxx.com:/repository.git"

set :scm_passphrase, ""

 

//sub version

set :scm, :subversion

set :repository, "https://account.svn.beanstalkapp.com/repository"

 

// user name

set :user, "server-user-name"

 多stage需要包含文件

require 'capistrano/ext/multistage'

 然后

set :stages, ["staging", "production"]

set :default_stage, "staging"

然后在config目录下创建一个文件夹deploy 然后创建两个文件 production.rb staging.rb

production.rb

server "xxx.com", :app, :web, :db, :primary => true

set :deploy_to, "/var/www/application_name"

staging.rb

server "xxx.com", :app, :web, :db, :primary => true

set :deploy_to, "/var/www/application_staging"

 3 一些设置

cap deploy:setup

 这条命令SSH到服务器，创建deploy_to的目录。

errors：

    [xxx.com] executing command

*** [err :: xxx.co] sudo

*** [err :: xxx.co] :

*** [err :: xxx.co] sorry, you must have a tty to run sudo

*** [err :: xxx.co]

    command finished in 718ms

failed: "sh -c 'sudo -p '\''sudo password: '\'' mkdir -p /var/www/TTQuan_staging /var/www/xxx_staging/releases /var/www/xxx_staging/shared /var/www/xxx_staging/shared/system /var/www/TTQuan_staging/shared/log /var/www/xxx_staging/shared/pids'" on xxx.co

 要添加

default_run_options[:pty] = true

 确信你的设置没有问题

cap deploy:check

 You appear to have all necessary dependencies installed

 最后部署

cap deploy

cap production deploy

 5 Tips & Tricks

1） Capistrano 第一次部署都会clone/export respository，然后之后每次git pull／svn up就会替代clone／export。如果你经常deploy 那这样会加速部署

set :deploy_via, :remote_cache

2）创建tasks

namespace :deploy do

  task :restart, :roles => :web do

    run "touch #{ current_path }/tmp/restart.txt"

  end

 

  task :restart_daemons, :roles => :app do

    sudo "monit restart all -g daemons"

  end

end

 Capistrano 不仅仅是通过ssh复制文件。完成复制文件之后你还可以配置一些事件和命令，例如通过自定义脚本重启服务器。Capistrano叫这些为“tasks”。

  这里例子很简单。restart就是部署完成之后运行的。 “touch tmp/restart.txt“ 是用passenger时候使用的，但是如果你使用unicorn就换成unicron的就可以了。

  下面的task 不会自动运行

after "deploy", "deploy:restart_daemons"

3）关联环境的branches

production.rb

set :branch, 'production'

 staging.rb

set :branch, 'staging'

cap deploy 默认是staging

cap production deploy