Step-By-Step setup slicehost server (fedora) for rails application.
Posted by Bhushan Ahire | Posted in capistrano, Rails, Subversion | Posted on 22-07-2009
1
Update
To update your system:
yum update
MySQL
to install mysql client and server apps
yum install mysql-server
The client package “mysql” will automatically be installed as a dependency.
Apache
yum install httpd
PHP5
To install php with soap, xml and mysql plugins:
yum install php php-soap php-xml php-mysql
some other php plugin utilities that are common:
yum install php-mbstring php-gd
Ruby
yum install ruby
Utilities
other useful utilities:
yum install nano wget elinks subversion vi
Nginx
install nginx web server:
yum install nginx
Mongrel Cluster
install mongrel_cluster:
gem install mongrel_cluster –include-dependencies
Setup your nginx configuration for your rails application and mongrel_cluster (proxy).
Below you found sample config file for nginx.conf (normally located in “/etc/nginx/conf/nginx.conf”)
user deploy;
worker_processes 1;
error_log logs/error.log debug;
#error_log logs/error.log notice;
#error_log logs/error.log info;
#pid logs/nginx.pid;
events {
worker_connections 1024;
}
http {
include conf/mime.types;
default_type application/octet-stream;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
tcp_nodelay on;
gzip on;
gzip_min_length 1100;
gzip_buffers 4 8k;
gzip_types text/plain;
upstream mongrel {
server 127.0.0.1:8000;
server 127.0.0.1:8001;
}
server {
listen 80;
server_name example.com;
root /var/www/apps/example/current/public;
index index.html index.htm;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect false;
if (-f $request_filename/index.html) {
rewrite (.*) $1/index.html break;
}
if (-f $request_filename.html) {
rewrite (.*) $1.html break;
}
if (!-f $request_filename) {
proxy_pass http://mongrel;
break;
}
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
Restart the nginx server:
/etc/init.d/nginx restart
Mongrel Configuration:
Now Go to the application directory and create a configuration for Mongrel:
mongrel_rails cluster::configure -e production -p 8000 -a 127.0.0.1 -N 2 -c /home/APP/production/APP/current
it will create the config/mongrel_cluster.yml file; basically you do not need to edit it.
You can test cluster with
To Start:
mongrel_rails cluster::start
To Stop:
mongrel_rails cluster::stop
To Restart:
mongrel_rails cluster::restart
Capistrano Configuration:
Then create a configuration for Capistrano:
cap –apply-to .
we need to modify the generated file config/deploy.rb:
require 'mongrel_cluster/recipes' #you set the APP name with the cap command set :application, "APP" #a path to your repository set :repository, "svn+ssh://USERNAME@SVN_SERVER/projects/#{application}/trunk" role :web, "SERVER" role :app, "SERVER" role :db, "SERVER", :primary => true #where to deploy (copy the files) on the server; I created a special user APP for theapplication (if you do not like it, replace the /home/#{application} part with your path set :deploy_to, "/home/#{application}/production/#{application}" set :mongrel_conf, "#{current_path}/config/mongrel_cluster.yml" #if the server login name is different to the development computer login name; in my casethe user name is the APP nameset :user, "APP"
Make necessary changes to the config/database.yml file.
Capistrano Deployment:
Create the basic structure on the server:
cap deploy:setup
For the first deployment you can use cold deploy:
cap cold_deploy
After that for next deployments you have to use:
cap deploy
You can also run migration from capistrano with:
cap deploy:migrate*
* Note: It wont work for me, it migrating to the previous release available in the releses folder, So I suggest you manually run migration on server.
That’s it, your server is ready to run.
Hope this documentation will be helpful to you, Enjoy 
.
ml
rder