Installing the Tapestry application¶

• ...or skip down to the section about Updating

The recommended ruby stack for Tapestry is Ruby Enterprise Edition (1.8.7), installed via rvm.

Install rvm and REE:

sudo -i
# curl -L https://get.rvm.io | sudo bash -s stable
# exit
sudo -i
# rvm install ree
# exit

Start a new login shell. Make sure RVM is working and ruby -v identifies itself as REE 1.8.7.

rvm use ree
ruby -v

→ ruby 1.8.7 (2012-02-08 MBARI 8/0x6770 on patchlevel 358) [x86_64-linux], MBARI 0x6770, Ruby Enterprise Edition 2012.02

Install rails.

sudo -i
# rvm use ree
# gem install rails
# gem install passenger
# passenger-install-apache2-module

Add three lines (provided by passenger-install-apache2-module) and two more lines (see below) to /etc/apache2/conf.d/passenger.conf.

LoadModule passenger_module /usr/local/rvm/gems/ree-1.8.7-2012.02/gems/passenger-3.0.17/ext/apache2/mod_passenger.so
PassengerRoot /usr/local/rvm/gems/ree-1.8.7-2012.02/gems/passenger-3.0.17
PassengerRuby /usr/local/rvm/wrappers/ree-1.8.7-2012.02/ruby

PassengerUser YOUR_USERNAME_HERE
RackEnv "development" 

Install some prerequisites for gems.

sudo apt-get install libxslt-dev libxml2-dev

Get a copy of the source tree -- e.g., in /var/www/tapestry

cd /var/www
sudo chmod a+w,+t .
git clone git://git.clinicalfuture.com/tapestry.git
sudo chmod go-w,-t .
cd tapestry && git submodule init && git submodule update

Then execute:

bundle install

Point a virtualhost to the public dir in your git repo

<VirtualHost *:80>
   ServerName tapestry.example.org
   DocumentRoot /var/www/tapestry/public
   <Directory /var/www/tapestry/public>
         AllowOverride all
         Options -MultiViews
   </Directory>
   Alias /warehouse /warehouse
   <Directory /warehouse>
         # This is important; downloads from /warehouse take a long time
         # and we do not want to tie up passenger processes with those.
         PassengerEnabled off
         Options None
         AllowOverride None
         Order allow,deny
         allow from all
   </Directory>
</VirtualHost>

Copy config/database.example to config/database.yml and edit to suit. Make sure to select mysql as the database server. Generate a password using pwgen 12 1 or head -c12345 /dev/urandom|md5sum|head -c12;echo. For example:

development:
  adapter: mysql
  server: localhost
  database: mypg
  username: mypg
  password: c16fbe415d29
  timeout: 5000

Copy config/environments/development.rb.sample to config/environments/development.rb and edit to suit. In particular the ROOT_URL (you may skip the "http://" prefix):

ROOT_URL = 'your.vhost.name'

Generate a secret token with something like

• ruby -e 'puts rand(2**256).to_s(36)'
• head -c1234567 /dev/urandom | sha256sum
• pwgen 64 1

Put the secret token in config/initializers/secret_token.rb like this

Tapestry::Application.configure do
 config.secret_token = "40ih46sqyihsiupgwce5u2oirflnor3atgmvzaqeqng42dwa0o" 
end

Set up the database:

rake db:setup
rake db:schema:load

Seed the database with a default set of enrollment steps:

rake db:seed_enrollment_steps

Set up data directory (replace USERNAME with the user who owns the GIT directory this code is in, and ROOT_URL matching the one above):

sudo mkdir -p /data/ROOT_URL
sudo chown -R USERNAME:USERNAME /data/ROOT_URL

Set up cron jobs --

1. populate NextHex table regularly (daily is probably ok):

PATH=/usr/local/bin:/usr/bin:/bin
38 0 * * *  root  (cd /var/www/tapestry/current/script; ./populate_next_hex.rb production 2>/dev/null)

2. Optionally: /etc/cron.d/tapestry-get-blog-feed

PATH=/usr/local/bin:/usr/bin:/bin
0 * * * * www-data cd /var/www/tapestry/current/script && ./get-blog-feed.rb development http://blog.personalgenomes.org/feed/

To enable large uploads with warehouse storage:

• sudo apt-get install runit fuse-utils
• sudo mkdir -p /etc/service/whmount/log/main
• sudo usermod -a -G fuse www-data
• Set up supervised whmount service:

sudo tee /etc/service/whmount/run <<EOF >/dev/null
#!/bin/sh
modprobe fuse
mkdir -p /warehouse
chown www-data:www-data /warehouse
sudo -u www-data fusermount -u /warehouse
exec sudo -u www-data whmount --no-detach --threaded / /warehouse 2>&1
EOF
sudo chmod +t /etc/service/whmount
sudo chmod +x /etc/service/whmount/run

sudo tee /etc/service/whmount/log/run <<EOF >/dev/null
#!/bin/sh
exec svlogd -tt main
EOF
sudo chmod +x /etc/service/whmount/log/run

• Make sure config/environments/development.rb matches your Apache and filesystem mount points:

  WAREHOUSE_WEB_ROOT = "/warehouse" # Apache alias pointing to whmount target
  WAREHOUSE_FS_ROOT = "/warehouse" # whmount target

Updating¶

Pull the latest source tree.

git pull

Install/update gem package dependencies.

bundle install

Bring your database up to the latest release.

rake db:migrate

Tell passenger to reload everything.

mkdir -p tmp
touch tmp/restart.txt