Migrating Acemoney onto a different server with nginx+passenger

Acemoney is a hosted application built by us i.e. Josh Software. Currently, its hosted on a linode with nginx+thin configured. The problem here is that there are 3 thin servers which consume humongous ‘stagnant’ memory. We have decided to migrate to nginx+passenger so that we an control in greater detail the number of instances, the memory and the performance.

Some things in the post are specific to Josh Software and its client. Overall, this should give a good clean idea about migrating to passenger.

1. Checkout from the branch from the respository (the 2.3.4 version)

2. Ensure  Rails 2.3.4 is installed

3. Edit the nginx configuration. /opt/nginx/conf/servers/acemoney.in

server {

 listen 80;
 server_name acemoney.in;
 passenger_enabled on;
 root <path-to-deployment>/acemoney/public;

4. Restart Nginx. In case you get an error — something like:

2009/10/27 16:02:07 [error] 32685#0: *9 directory index of
"/home/gautam/deployment/acemoney/public/" is forbidden, client:,
server: acemoney.in, request: "GET / HTTP/1.1", host: "acemoney.in"

Check syntax in the conf file (I had forgotten a ‘;’) OR check permissions of the root directory to see if you have given r+x permissions

5. The current gem setup was:

$:/opt/nginx/conf/servers$ sudo gem search

*** LOCAL GEMS ***

abstract (1.0.0)
actionmailer (2.3.4, 2.3.3, 2.2.2, 2.1.2)
actionpack (2.3.4, 2.3.3, 2.2.2, 2.1.2)
activerecord (2.3.4, 2.3.3, 2.2.2, 2.1.2)
activeresource (2.3.4, 2.3.3, 2.2.2, 2.1.2)
activesupport (2.3.4, 2.3.3, 2.2.2, 2.1.2)
capistrano (2.5.5)
cgi_multipart_eof_fix (2.5.0)
chronic (0.2.3)
contacts (1.0.13)
daemons (1.0.10)
engineyard-eycap (0.4.7)
erubis (2.6.4)
eventmachine (0.12.6)
fastthread (1.0.7)
gem_plugin (0.2.3)
heywatch (0.0.1)
highline (1.5.0)
hoe (1.12.2)
json (1.1.6)
memcache-client (1.7.2)
mislav-will_paginate (2.3.10)
mongrel (1.1.5)
mongrel_cluster (1.0.5)
mysql (2.7)
net-scp (1.0.2)
net-sftp (2.0.2)
net-ssh (2.0.11)
net-ssh-gateway (1.0.1)
packet (0.1.15)
passenger (2.2.5)
rack (1.0.0, 0.9.1)
rails (2.3.4, 2.3.3, 2.2.2, 2.1.2)
rake (0.8.4)
RedCloth (4.1.9)
right_aws (1.10.0)
right_http_connection (1.2.4)
rubyforge (1.0.3)
rubyist-aasm (2.0.5)
thin (1.0.0)
tidy (1.1.2)
xml-simple (1.0.12)

So, I had to add the following gems:

$ sudo gem install acts_as_reportable

This added the following dependencies:

Successfully installed fastercsv-1.2.3
Successfully installed archive-tar-minitar-0.5.2
Successfully installed color-1.4.0
Successfully installed transaction-simple-1.4.0
Successfully installed pdf-writer-1.1.8
Successfully installed ruport-1.6.1
Successfully installed acts_as_reportable-1.1.1
Successfully installed json_pure-1.1.9
Successfully installed rubyforge-2.0.3
Successfully installed rake-0.8.7

$ sudo gem install prawn
$ sudo gem install ferret
$ sudo gem install acts_as_ferret

6. Then I got the latest database dump from Acemoney server and configured the database locally. Edit the config/database.yml and the following:

  adapter: mysql
  user: acemoney
  password: <password>
  host: localhost

Created a new user in mysql and granted ALL  permissions to acemoney database

mysql> grant all on acemoney.* to 'acemoney'@'localhost' identified by '<password>'

Then create the database and dump the contents from the backup

$ RAILS_ENV=production rake db:create
$ mysql -uacemoney acemoney -p < <backupfile>

Start the ferret_server

$ ./script/ferret_server -eproduction start

Build the index:

$ RAILS_ENV=production rake ace:rebuildFerretIndex

NOW, we are good to go. Make some local changes in /etc/hosts file on your machine to point acemoney.in to the linode IP address. Then http://acemoney.in should take you to the hosted application on nginx+passenger.

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