Comments on: Grails and Cloud Computing: Part 1 – Amazon EC2

By: Peter Braswell

Peter Braswell — Thu, 25 Feb 2010 13:38:51 +0000

Big D –
Great article! I took the easier path and deployed via Cloud Foundry. It was very, very easy although parts of the console UI were non-intuitive. I was a little surprised at the cost, @ .08 an hour, running the app for a month was estimated to cost approximately $62 bucks as I recall. Certainly not inordinately expensive, but much more that free e.g. Google App Engine.

Your rock,
Peter

By: villalobos

villalobos — Thu, 21 Jan 2010 12:26:30 +0000

People doing professional development with this platform may help you out in this.
One of my friend has mentioned its limitations during its commercial use can be seen here,
http://bygsoft.wordpress.com/2010/01/09/cloudy-combo-google-app-engine-and-amazon-s3-combo-pack/

By: Chris

Chris — Mon, 18 Jan 2010 23:34:04 +0000

I am getting

Error executing script CloudToolsDeploy: No such property: DEFAULT_DEPS for class: ExplodedWar_groovy

Using Grails 1.2 and Cloud Tools 0.6, setting DEFAULT_J5_DEPS = DEFAULT_DEPS does not fix the issue, it seems this notation is no longer referenced in 1.2

Any tips?

By: don

don — Tue, 24 Nov 2009 12:55:08 +0000

@Marko… you are of course correct, and I have changed the S3 reference to mention EBS instead. Thanks for keeping me honest!

By: Marko

Marko — Mon, 23 Nov 2009 17:47:05 +0000

Even it’s not part of your blog, in your conclusion you mention Amason S3 as a solution for database persistence: It’s not a good idea to treat Amazon S3 as remote filesystem (not only because it’s not possible to mount/access it directly). It’s better to treat S3 as a backup storage like a tape.
For use with databases Amazon provides EBS (elastic block storage). There is excellent book by George Reese “Cloud Application Architectures” which also describes the pros and cons.

Regards Marko

By: limcheekin

limcheekin — Thu, 24 Sep 2009 10:52:09 +0000

Hi,

I managed to make OneToMany relationship working in Google App Engine (GAE).

You can find out more from URL below:
http://stackoverflow.com/questions/1377091/how-to-setup-one-to-many-unidirectional-mapping-for-grails-application-on-gae/

I wish the link above is helpful to you.

Regards,
Chee Kin

By: don

don — Wed, 23 Sep 2009 15:46:22 +0000

@Christian.. yeah I went thru the _exact_ same pain trying to get the app onto AppEngine. I have started writing the pos on the Google experience (actually looks like it may end up being more than on post) and hopefully will have it up early next week. Thanks for the kind words!

By: Christian Naeger

Christian Naeger — Wed, 23 Sep 2009 09:12:28 +0000

Thanks for the information. VERY informative! I was trying to go the other route and modify my Grails application to use Google AppEngine (mainly because it’s free :-) … and because it is supposed to require zero configuration)…. however, I failed miserably so far, I ran into several bugs in the app-engine and gorm-jpa plugin (couldn’t get a OneToMany relationship working with JPA and scaffolded controllers/views). So, I am more than excited to read about your experiences. Regards, Chris