DEV

h1. Openshift

{{toc}}

h2. Instalación herramientas cliente

*Fedora*

<pre>

$ su -c "yum install rubygem-rhc"

</pre>

*YUM*

<pre>

$ su -

<contraseña>

# cd /etc/yum.repos.d/

# wget https://openshift.redhat.com/app/repo/openshift.repo

# yum install rhc

</pre>

*rubygems*

<pre>

$ su -c "gem install rhc"

</pre>

{{include(rhc-create-domain)}}

{{include(rhc-create-app)}}

h2. Agregando un gem con bundle

Incompleto:

<pre>

$ vim Gemfile

...

gem 'cancan'    # gem agregado al Gemfile

:wq

$ bundle install --no-deployment

...

Enter your password to install the bundled RubyGems to your system: xxxxx

...

Using bundler (1.0.12) 

Installing cancan (1.6.5) 

Using thor (0.14.6) 

...

</pre>

<pre>

$ bundle install --deployment

Fetching source index for http://rubygems.org/

Fetching source index for http://gems.github.com/

Using rake (0.9.2) 

Using abstract (1.0.0) 

...

Using activerecord (3.0.8) 

Using activeresource (3.0.8) 

Installing cancan (1.6.5) 

Using bundler (1.0.12) 

...

Your bundle is complete! It was installed into ./vendor/bundle

$ git add vendor

$ git commit 

$ git push

</pre>

h2. Rails rake:db:migrate

En la medida que vamos desarrollando nuestra aplicación el esquema de la base de datos va cambiando, entonces, ¿cómo ejecutamos rake db:migrate? La técnica es usar *config/environments/production.rb* de la siguiente manera:

<pre><code class="ruby">

  config.after_initialize do

    ActiveRecord::Migrator.migrate(RAILS_ROOT + "/db/migrate" )

  end

</code></pre>

Queda pendiente documentar otras técnicas para por ejemplo rehacer la base de datos desde cero, o eliminar la tabla de sesiones entre otras necesidades comunes.

h2. Integración git/redmine/openshift

Al instalar y configurar openshift, se genera una configuración ssh , una llave específica de seguridad, y un archivo de hosts conocidos. Para poder acceder desde otra máquina, en este caso el servidor Redmine, estoy copiando los archivos correspondientes de configuración.

<pre>

$ cd ~/.ssh

$ cat config 

# Added by rhc-create-app on mié jun 15 17:22:53 VET 2011

Host *.rhcloud.com

    IdentityFile ~/.ssh/libra_id_rsa

    VerifyHostKeyDNS yes

    StrictHostKeyChecking no

    UserKnownHostsFile ~/.ssh/libra_known_hosts

$ scp config gomix.fedora-ve.org:~/.ssh/

...

$ scp libra_id_rsa gomix.fedora-ve.org:~/.ssh/

...

$ scp libra_known_hosts  gomix.fedora-ve.org:~/.ssh/

...

</pre>

Ahora en mi servidor Redmine:

<pre>

$ cd cierto/directorio/accesible

$ git clone --bare ssh://0b027ce8ffde4b7eb98e5bd63908ed21@fudcon-gomix.rhcloud.com/~/git/fudcon.git/

Cloning into bare repository fudcon.git...

remote: Counting objects: 3470, done.

remote: Compressing objects: 100% (2654/2654), done.

remote: Total 3470 (delta 705), reused 3220 (delta 635)

Receiving objects: 100% (3470/3470), 8.09 MiB | 118 KiB/s, done.

Resolving deltas: 100% (705/705), done.

</pre>

Edite la configuración git:

<pre>

$ cat config

[core]

	repositoryformatversion = 0

	filemode = true

	bare = true

[remote "origin"]

  url = ssh://0b027ce8ffde4b7eb98e5bd63908ed21@fudcon-gomix.rhcloud.com/~/git/fudcon.git

  fetch = +refs/heads/*:refs/remotes/origin/*

</pre>

Solo debería necesitar agregar la línea *fetch*. Luego para refrescar su repositorio local cada quince minutos y a su vez Redmine lo pueda mostrar actualizado:

<pre>

$ crontab -l

*/15 * * * * cd /home/gomix/Public/fudcon.git && git fetch && git reset --soft refs/remotes/origin/master

</pre>

La configuración Redmine es simple, abajo un pantallazo, sólo debe seleccionar el tipo a git y pasarle la ruta al clone git (bare).

!git-openshift-redmine.png!

Abajo un pantallazo de un proyecto Redmine ejemplo conectado git con Openshift.

!redmine-git.png!

h2. Herramientas express

<pre>

/usr/bin/rhc-create-app

/usr/bin/rhc-create-domain

/usr/bin/rhc-ctl-app

/usr/bin/rhc-snapshot

/usr/bin/rhc-tail-files

/usr/bin/rhc-user-info

</pre>

h3. rhc-ctl-app

<pre>

$ rhc-ctl-app app -h

Usage: /usr/bin/rhc-ctl-app

Control an OpenShift express app

  -a|--app   application   Application name  (alphanumeric) (required)

  -l|--rhlogin rhlogin     Red Hat login (RHN or OpenShift login with OpenShift Express access) (Default: guillermo.gomez@gmail.com)

  -p|--password password   RHLogin password  (optional, will prompt)

  -c|--command command     (start|stop|restart|reload|status|destroy)

  -L|--embedded-list       List supported embedded cartridges

  -e|--embed               (add-$cartridge|remove-$cartridge) eg: add-mysql-5.1

  -b|--bypass              Bypass warnings

  -d|--debug               Print Debug info

  -h|--help                Show Usage info

</pre>

*start*

<pre>

$ rhc-ctl-app -a fudcon -c start

Password: 

Contacting https://openshift.redhat.com

Contacting https://openshift.redhat.com

API version:    1.1.1

Broker version: 1.1.1

RESULT:

Success

</pre>

*stop*

<pre>

$ rhc-ctl-app -a fudcon -c stop

Password: 

Contacting https://openshift.redhat.com

Contacting https://openshift.redhat.com

API version:    1.1.1

Broker version: 1.1.1

RESULT:

Success

</pre>

*restart*

<pre>

$ rhc-ctl-app -a fudcon -c restart 

Password: 

Contacting https://openshift.redhat.com

Contacting https://openshift.redhat.com

API version:    1.1.1

Broker version: 1.1.1

RESULT:

Success

</pre>

*status*

<pre>

$ rhc-ctl-app -a fudcon -c status

Password: 

Contacting https://openshift.redhat.com

Contacting https://openshift.redhat.com

API version:    1.1.1

Broker version: 1.1.1

RESULT:

Total Accesses: 0

Total kBytes: 0

Uptime: 44

ReqPerSec: 0

BytesPerSec: 0

BusyWorkers: 1

IdleWorkers: 0

Scoreboard: W....

</pre>

{{include(rhc-domain-info)}}

h3. rhc-tail-files

<pre>

$ rhc-tail-files -a fudcon -f fudcon/logs/* -p budhUjvwn6

...

==> fudcon/logs/error_log-20110712-000000-EST <==

	from /var/lib/libra/0b027ce8ffde4b7eb98e5bd63908ed21/fudcon/deploy/config/application.rb:7

	from /var/lib/libra/0b027ce8ffde4b7eb98e5bd63908ed21/fudcon/deploy/config/environment.rb:2:in `require'

	from /var/lib/libra/0b027ce8ffde4b7eb98e5bd63908ed21/fudcon/deploy/config/environment.rb:2

	from config.ru:3:in `require'

	from config.ru:3

	from /var/lib/libra/0b027ce8ffde4b7eb98e5bd63908ed21/fudcon/deploy/vendor/bundle/ruby/1.8/gems/rack-1.2.3/lib/rack/builder.rb:46:in `instance_eval'

	from /var/lib/libra/0b027ce8ffde4b7eb98e5bd63908ed21/fudcon/deploy/vendor/bundle/ruby/1.8/gems/rack-1.2.3/lib/rack/builder.rb:46:in `initialize'

	from config.ru:1:in `new'

	from config.ru:1

/var/lib/libra/0b027ce8ffde4b7eb98e5bd63908ed21/fudcon/deploy/config/environments/production.rb:51: warning: don't put space before argument parentheses

...

</pre>

*production.log*: para que pueda tener ese log disponible con rhc-tail-files debe realizar el siguiente pequeño ajuste en config/environments/production.rb:

<pre><code class="ruby">

paths.log="../logs/production.log"

</code></pre>

<pre>

$ rhc-tail-files -a fudcon -f fudcon/logs/production.log -p budhUjvwn6

Contacting https://openshift.redhat.com

Attempting to tail files: fudcon/logs/production.log

Use ctl + c to stop

Started GET "/" for 41.208.172.156 at Thu Aug 25 02:27:26 -0400 2011

  Processing by WelcomeController#index as HTML

Redirected to https://cas.ipostel.gob.ve/login?service=http%3A%2F%2Ffudcon-gomix.rhcloud.com%2Fwelcome%2Findex

Completed 302 Found in 2ms

Started GET "/" for 61.135.249.108 at Thu Aug 25 04:40:38 -0400 2011

  Processing by WelcomeController#index as HTML

Redirected to https://cas.ipostel.gob.ve/login?service=http%3A%2F%2Ffudcon-gomix.rhcloud.com%2Fwelcome%2Findex

Completed 302 Found in 2ms

...

</pre>

h2. Páginas hijas

* [[rhc-create-app]]

* [[rhc-create-domain]]

* [[rhc-domain-info]]

* [[rhc-user-info]]

h2. Referencias

* https://www.redhat.com/openshift/kb/kb-e1005-ruby-on-rails-express-quickstart-guide