Quick Access to CloudFoundry

Mini “tuto” de acceso a Cloud Foundry a través de “vmc”

Voy a contar de manera muy escueta como accedo a un PaaS Cloud Foundry.

Instalaciones

He usado rvm para instalar vmc

Instalación rvm y vmc

Es necesario que el usuario haga uso de sudo. Para instalar:

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imasd@corelia:~$ curl -#L https://get.rvm.io | bash -s stable --autolibs=3 --ruby
imasd@corelia:~$ source .bash_profile 
imasd@corelia:~$ rvm list

rvm rubies

=* ruby-2.0.0-p0 [ x86_64 ]

# => - current
# =* - current && default
#  * - default

Una vez instalado rvm me creo un gemset especifico para albergar las utilidades.

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imasd@corelia:~$ rvm gemset create cf-imasd
imasd@corelia:~$ rvm gemset use cf-imasd

Y ahora que ya estamos en el gemset especifico, instalamos vmc.

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imasd@corelia:~$ gem install vmc --no-rdoc --no-ri

Uso de vmc

Lo primero es conectarse a la infraestructura.

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imasd@corelia:~$ vmc target api.cfimasd.abadasoft.com
Setting target to http://api.cfimasd.abadasoft.com... OK

Si no tenemos usuario registrado, debemos crear uno, esto sólo es posible si el entorno lo permite.

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imasd@corelia:~$ vmc register imasd@abadasoft.com
Password> *********

Confirm Password> *********

Your password strength is: good
Creating user... OK
target: http://api.cfimasd.abadasoft.com

Authenticating... OK

Una vez registrado, podemos logarnos.

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imasd@corelia:~$ vmc login imasd@abadasoft.com
target: http://api.cfimasd.abadasoft.com

Password> *********

Authenticating... OK

Ya podríamos desplegar aplicaciones.

Ejemplo de despliegue

Para relizar el despliegue de una aplicación únicamente debemos ir al directorio de dicha aplicación, y ejecutar vmc push.

Aplicacion ruby
Despliegue
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imasd@corelia:~/apps/env$ vmc push
Using manifest file manifest.yml

Creating env... OK

1: env.cfimasd.abadasoft.com
2: none
Domain> env.cfimasd.abadasoft.com

Updating env... OK
Uploading env... OK
Starting env... OK
Checking env...
  0/1 instances: 1 starting
    1/1 instances: 1 running
OK

El fichero manifest.yml tiene:

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---
applications:
- name: env
  framework: sinatra
  runtime: ruby19
  memory: 128M
  instances: 1
  url: env.${target-base}
  path: .
Prueba
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imasd@corelia:~/apps/env$ lynx --dump env.cfimasd.abadasoft.com
             XXXXX Hello from the Cloud! via: 192.168.242.137:54765

Si se hace un cambio en el codigo:

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imasd@corelia:~/apps/env$ vim env.rb

imasd@corelia:~/apps/env$ vmc push
Using manifest file manifest.yml

Uploading env... OK
Stopping env... OK

Starting env... OK
Checking env...
  0/1 instances: 1 starting
    1/1 instances: 1 running
OK

imasd@corelia:~/apps/env$ lynx --dump env.cfimasd.abadasoft.com
             XXXXX Hello from the Cloud! via: 192.168.242.137:46386

             Your IP address is 213.37.69.91
Aplicacion Java
Despliegue

Enpaquetamos:

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imasd@corelia:~/apps/hello-java$ mvn clean package
[ ............................................................................ ]
[INFO] Packaging webapp
[INFO] Assembling webapp [hello-java] in [/home/imasd/apps/hello-java/target/hello-java-1.0]
[INFO] Processing war project
[INFO] Copying webapp resources [/home/imasd/apps/hello-java/src/main/webapp]
[INFO] Webapp assembled in [68 msecs]
[INFO] Building war: /home/imasd/apps/hello-java/target/hello-java-1.0.war
[INFO] WEB-INF/web.xml already added, skipping
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 14.598s
[INFO] Finished at: Fri Apr 19 11:32:40 CEST 2013
[INFO] Final Memory: 16M/148M
[INFO] ------------------------------------------------------------------------

Desplegamos:

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imasd@corelia:~/apps/hello-java$ cd target/
imasd@corelia:~/apps/hello-java/target$ vmc push
Name> hello-java

Instances> 1

1: java_web
2: other
Framework> 1

1: java
2: java7
3: other
Runtime> 1

1: 64M
2: 128M
3: 256M
4: 512M
5: 1G
Memory Limit> 512M

Creating hello-java... OK

1: hello-java.cfimasd.abadasoft.com
2: none
Domain> hello-java.cfimasd.abadasoft.com

Updating hello-java... OK

Create services for application?> n

Save configuration?> n

Uploading hello-java... OK
Starting hello-java... OK
Checking hello-java...
  0/1 instances: 1 starting
    1/1 instances: 1 running
OK
Prueba
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imasd@corelia:~/apps/hello-java/target$ lynx --dump hello-java.cfimasd.abadasoft.com
Hello from 192.168.242.137:50389

Si se hace un cambio en el codigo:

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imasd@corelia:~/apps/hello-java$ vim src/main/java/org/cloudfoundry/samples/HelloServlet.java

imasd@corelia:~/apps/hello-java$ mvn clean package

imasd@corelia:~/apps/hello-java$ vmc push --path target/
Name> hello-java

Save configuration?> y

Saving to manifest.yml... OK
Uploading hello-java... OK
Stopping hello-java... OK

Starting hello-java... OK
Checking hello-java...
  0/1 instances: 1 starting
  1/1 instances: 1 running
OK

Al pulsar y en Save configuration? se crea el fichero manifest.yml:

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imasd@corelia:~/apps/hello-java$ cat manifest.yml
---
applications:
- name: hello-java
  framework: java_web
  runtime: java
  memory: 512M
  instances: 1
  url: hello-java.${target-base}
  path: target/

El dump para comprobar si la aplicación ha cambiado:

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imasd@corelia:~/apps/hello-java$ lynx --dump hello-java.cfimasd.abadasoft.com
Hello from 192.168.242.137:47951
I am: hello-java