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 "

# If youaren'tdeployingto / u / apps /# {application} on thetarget
# servers ( whichisthedefault ), youcanspecifytheactuallocation
# viathe :deploy_to variable:
# set :deploy_to , " /var/www/#{application} "

# If youaren'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 " # new 0
role :web , " 192.168.100.231 "
role :db , " 192.168.100.231 " , :primary => true


task :chmod , :roles => :web do
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 "


# new 1
set :mongrel_conf , " #{current_path}/config/mongrel_cluster.yml "
set :mongrel_port , " 4000 "
set :mongrel_nodes , " 4 "

# new 2
namespace :deploy do
task :start , :roles => :app do

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

# new 3
namespace :deploy do
task :restart , :roles => :app do
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