使用Capistrano部署apache+mongrel cluster

部署任务：

机器1 192.168.100.231, os: CentOS release3.6 (Final),装上apache2.3.6+mongrel cluster

机器2 192.168.100.234, os: CentOS release4.3 (Final) 装上 mongrel cluster

关于配置apache+mongrel cluster本文不再赘述，请看本人的文章

安装和配置Apache + mongrel cluster

关于Capistrano的基础，请看本人的文章

使用Capistrano部署rails

在这边文章中主要使用了Capistrano部署了一个单实例的mongrel 服务器，并且也只部署了一台机器

基于前两篇的基础，本文描述了如何使用Capistrano部署apache+mongrel cluster应用到多台机器

重点就是 deploy.rb

set:application,"space"
set:repository,"http://192.168.100.212:3690/repo/moxtv/branches/space"
set:svn_username,"weip"
set:svn_password,"weip"

#Ifyouaren'tdeployingto/u/apps/#{application}onthetarget
#servers(whichisthedefault),youcanspecifytheactuallocation
#viathe:deploy_tovariable:
#set:deploy_to,"/var/www/#{application}"

#Ifyouaren'tusingSubversiontomanageyoursourcecode,specify
#yourSCMbelow:
#set:scm,:subversion
set:use_sudo,false

set:deploy_to,"/var/www/webapps/#{application}"
set:user,"root"
set:password,"secretpa"

role:app,"192.168.100.231","192.168.100.234"#new0
role:web,"192.168.100.231"
role:db,"192.168.100.231",:primary=>true


task:chmod,:roles=>:webdo
run"chmod-fR755#{deploy_to}/current/script/*"
end

after"deploy:symlink",:chmod

default_environment["PATH"]="/usr/local/ruby2/bin:/usr/local/apache2.2.6/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/ruby/bin:/usr/local/ant/bin:/usr/java/jdk1.5.0_05/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin"


#new1
set:mongrel_conf,"#{current_path}/config/mongrel_cluster.yml"
set:mongrel_port,"4000"
set:mongrel_nodes,"4"

#new2
namespace:deploydo
task:start,:roles=>:appdo

run"cd#{current_path}&&mongrel_railscluster::configure-eproduction-p#{mongrel_port}-N#{mongrel_nodes}-c#{current_path}"
run"cd#{current_path}&&mongrel_railscluster::start"
#run"rm-rf/home/#{user}/public_html;ln-s#{current_path}/public/home/#{user}/public_html"
run"mkdir-p#{deploy_to}/shared/config"
run"mv#{current_path}/config/mongrel_cluster.yml#{deploy_to}/shared/config/mongrel_cluster.yml"
run"ln-s#{deploy_to}/shared/config/mongrel_cluster.yml#{current_path}/config/mongrel_cluster.yml"
run"apachectlstart"
end
end

#new3
namespace:deploydo
task:restart,:roles=>:appdo
run"ln-s#{deploy_to}/shared/config/mongrel_cluster.yml#{current_path}/config/mongrel_cluster.yml"
run"cd#{current_path}&&mongrel_railscluster::restart"
run"apachectlrestart"
end
end

主要修改了#new0 ，并删除了单实例mongrel中的spin文件

并加了3个部分，#new1,#new2,#new3

#new1 设置了些 与 mongrel cluster相关的变量

#new2#new3 分别重写了deploy:start和deploy:restart任务

这样就防止了默认的任务去寻找相关的spin文件

配置文件准备就绪，然后cap setup,cap deploy:cold,cap deploy