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Ruby on Rails, Passenger… ¡alucinantemente simpático!

Estoy instalando Passenger (aka mod_rails) en el servidor de staging porque es lo que está ahora de moda para poner aplicaciones Rails en producción y la verdad que empiezo a entender porque.

La instalación es super sencilla, se instala como una gema:

$ sudo gem install passenger

Que en realidad lo que instala es el instalador en sí, que se encarga de buscar tu apache, compilar los módulos, buscar posibles dependencias que falten, decirte como arreglar estas dependencias y finalmente explicarte como activar el módulo y como configurar el apache para activar tu primera aplicación rails.

Osea que más que un instalador es un tutorial super amigable y fácil de seguir.

Una vez todo instalado y configurado mi primer virtual host apuntando a mi aplicación Rails intento acceder a ella y salta un error, pero no es un error de esos feos, de casque total que no sabes lo que es y tienes que empezar a navegar por los logs para detectarlo, no.. el error aparece en forma de página web dispensada por el propio Passenger que te explica amable y elegantemente que no tienes Rails 2.2.2 instalado y el comando que debes ejecutar para arreglarlo.. super simpático.

Instalado rails 2.2.2 me salta otro error, debidamente capturado otra vez por el módulo y con varias explicaciones, posibles causas y consejos para resolverlo.. en este caso me falta el database.yml.. normal que no funcione.. pero lo increíble es lo majo que está siendo conmigo Passenger.

Arreglado esto intentamos volver a acceder a la aplicación.. pum! nuevo error, falta una gema.. no pasa nada Passenger también me sugiere “A required library may not installed. Please install all libraries that this application requires.”.

Error de acceso a BD, ups! Passenger no me ha dado feedback de esto, una simple pantalla blanca con un poco sutil “500 Internal Server Error“. Ha habido que acudir a los logs para detectar la causa.. un punto menos Passenger :)

Toma otro 500 en frío, no había corrido las migraciones, ya lo sabía, era para ver como se portaba Passenger, parece ser que una vez arrancada la aplicación ya deja de capturar los errores, una pena, con lo bonitos que los muestra.

La balanza se inclina muy favorablemente y estoy encantado con Passenger.

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