用capistrano写一个简单的deploy脚本
setp 1:
- gem install capistrano
- gem install capistrano-ext
setp 2: 在项目根目录执行
- capify .
这将在根目录创建Capfile 和 config目录下创建deploy.rb 文件
setp 3: 编辑deploy.rb
- require 'bundler/capistrano' #添加之后部署时会调用bundle install, 如果不需要就可以注释掉
- require "capistrano/ext/multistage" #多stage部署所需
- set :stages, %w(development production)
- set :default_stage, "development"
- set :application, "crm_app_end" #应用名称
- set :repository, "https://chang.abc.com/svn/engineering/vwaccount/mydeploy/trunk"
- set :keep_releases, 5 #只保留5个备份
- set :deploy_to, "/var/www/#{application}" #部署到远程机器的路径
- set :user, "user1" #登录部署机器的用户名
- set :password, "user1" #登录部署机器的密码, 如果不设部署时需要输入密码
- default_run_options[:pty] = true #pty: 伪登录设备
- #default_run_options[:shell] = false #Disable sh wrapping
- set :use_sudo, true #执行的命令中含有sudo, 如果设为false, 用户所有操作都有权限
- set :runner, "user2" #以user2用户启动服务
- set :svn_username, "xxxx"
- set :scm, :subversion #
- # Or: `accurev`, `bzr`, `cvs`, `darcs`, `git`, `mercurial`, `perforce`, `subversion` or `none`
- #set :deploy_via, :copy #如果SCM设为空, 也可通过直接copy本地repo部署
- #set :domain, "crm.abc.com" #custom define
- role :web, "192.168.0.13", "192.168.0.117" # Your HTTP server, Apache/etc
- role :app, "192.168.0.13", "192.168.0.117" # This may be the same as your `Web` server
- role :db, "192.168.0.13", :primary => true # This is where Rails migrations will run
- #role :db, "your slave db-server here"
- #
- namespace :deploy do
- desc "remove and destory this app"
- task :destory, :roles => :app do
- run "cd #{deploy_to}/../ && #{try_sudo} mv #{application} /tmp/#{application}_#{Time.now.strftime('%Y%d%m%H%M%S')}" #try_sudo 以sudo权限执行命令
- end
- after "deploy:update", "deploy:shared:setup" #after, before 表示在特定操作之后或之前执行其他任务
- namespace :shared do
- desc "setup shared folder symblink"
- task :setup do
- run "cd #{deploy_to}/current; rm -rf shared; ln -s #{shared_path} ."
- end
- end
- after "deploy:setup", "deploy:setup_chown"
- desc "change owner from root to user1"
- task :setup_chown do
- run "cd #{deploy_to}/../ && #{try_sudo} chown -R #{user}:#{user} #{application}"
- end
- task :start do
- run "cd #{deploy_to}/current && ./crmd.sh start"
- #try_sudo "cd #{deploy_to}/current && ./restart.sh"
- end
- task :stop do
- run "cd #{deploy_to}/current && ./crmd.sh stop"
- end
- task :restart do
- run "cd #{deploy_to}/current && ./crmd.sh restart"
- end
- end
setup 4: 在项目根目录执行
- cap deploy:setup #建立部署路径
- cap deploy:update #部署
- cap deploy:start #启动服务
- cap deploy:stop #停止服务
- cap deploy:restart #重启服务
setup 5: 如果有多个stage要部署,则在config下创建deploy文件夹, 在该文件夹下有各stages文件, 文件名和
set :stages, %w(development production) 对应, 如development.rb
production.rb,在各文件中设置相应变量即可, 然后可用 cap production deploy:...
来执行对应production的操作
其实capistrano最终都是转变成shell命令来完成任务的, 所以纯粹用shell脚本也可以完成相应功能,
但相对于晦涩的shell命令, capistrano明显更好懂, 并且它有很多默认操作非常好用, 比如setup, update,
如果自己用shell来实现非常麻烦, capistrano允许在脚本中嵌入shell, 比如上面的start, restart等, 这非常方便,
很多capistrano做不到的就可以用shell去搞定了
这事最近又有了新进展,我在一个django项目中用capistrano来发布,虽然python下也有一个叫fabric的东西,但那个还不熟,先用这个,有时间学习一下fabric再说
require 'bundler/capistrano' #添加之后部署时会调用bundle install, 如果不需要就可以注释掉
- #require "capistrano/ext/multistage" #多stage部署所需
- set :application, "app" #应用名称
- set :scm, :subversion
- set :repository, "svn://0.0.0.0/trunk/src"
- set :keep_releases, 5 #只保留5个备份
- set :deploy_to, "/var/www/#{application}" #部署到远程机器的路径
- set :user, "xxx" #登录部署机器的用户名
- set :password, "xxxxx" #登录部署机器的密码, 如果不设部署时需要输入密码
- default_run_options[:pty] = true #pty: 伪登录设备
- #default_run_options[:shell] = false #Disable sh wrapping
- #set :use_sudo, true #执行的命令中含有sudo, 如果设为false, 用户所有操作都有权限
- set :runner, "xxxx" #以用户启动服务
- #set :deploy_via, :copy #如果SCM设为空, 也可通过直接copy本地repo部署
- role :web, "172.16.120.222"#, "192.168.0.117" # Your HTTP server, Apache/etc
- role :app, "172.16.120.222"#, "192.168.0.117" # This may be the same as your `Web` server
- role :db, "172.16.120.222", :primary => true # This is where Rails migrations will run
- #role :db, "your slave db-server here"
- #
- namespace :deploy do
- desc "remove and destory this app"
- task :destory, :roles => :app do
- run "cd #{deploy_to}/../ && #{try_sudo} mv #{application} /tmp/#{application}_#{Time.now.strftime('%Y%d%m%H%M%S')}" #try_sudo 以sudo权限执行命令
- end
- # after "deploy:setup", "deploy:setting_link"
- # desc "symlink for settings.py"
- # task :setting_link do
- # run "cd #{deploy_to}; #{try_sudo} touch current; #{try_sudo} ln -s current releases/#{application}"
- # end
- after "deploy:update", "deploy:shared:setup" #after, before 表示在特定操作之后或之前执行其他任务
- namespace :shared do
- desc "setup shared folder symblink"
- task :setup do
- run "cd #{deploy_to}/current; ln -s #{shared_path} x"
- run "cd #{deploy_to}/current; rm -rf log; ln -s #{shared_path}/log log"
- run "cd #{deploy_to}/releases; rm -f #{application} && __realversion__=`realpath ../current` && ln -s $__realversion__ #{application}"
- end
- end
- after "deploy:setup", "deploy:setup_chown"
- desc "change owner from root to user1"
- task :setup_chown do
- run "cd #{deploy_to}/../ && #{try_sudo} chown -R #{user}:#{user} #{application}"
- end
- task :default do
- transaction do
- update_code
- symlink
- end
- end
- task :update_code, :except => { :no_release => true } do
- on_rollback { run "rm -rf #{release_path}; true" }
- strategy.deploy!
- end
- before "deploy:rollback", "deploy:clean_adaptive"
- task :clean_adaptive do
- run "cd #{deploy_to}/releases; rm -f #{application}"
- end
- after "deploy:rollback", "deploy:rollback_set"
- task :rollback_set do
- run "cd #{deploy_to}/releases; rm -f #{application} && __realversion__=`realpath ../current` && ln -s $__realversion__ #{application}"
- end
- task :start do
- run "cd #{deploy_to}/current && ./adaptive_pool.sh start"
- run "cd #{deploy_to}/current && ./adaptive_exam.sh start"
- end
- task :stop do
- run "cd #{deploy_to}/current && ./adaptive_pool.sh stop"
- run "cd #{deploy_to}/current && ./adaptive_exam.sh stop"
- end
- task :restart do
- run "cd #{deploy_to}/current && ./adaptive_pool.sh restart"
- run "cd #{deploy_to}/current && ./adaptive_exam.sh restart"
- end
- end
使用Capistrano部署rails: http://beifenggo.iteye.com/blog/1021772
使用 Capistrano 对rails app进行快速部署: http://mike-gao.iteye.com/blog/919646