{"id":721,"date":"2011-12-29T21:37:00","date_gmt":"2011-12-29T21:37:00","guid":{"rendered":"http:\/\/www.javacodegeeks.com\/2012\/10\/red-hat-openshift-getting-started-java-ee6-in-the-cloud.html"},"modified":"2012-10-21T20:45:33","modified_gmt":"2012-10-21T20:45:33","slug":"red-hat-openshift-getting-started-java","status":"publish","type":"post","link":"https:\/\/www.javacodegeeks.com\/2011\/12\/red-hat-openshift-getting-started-java.html","title":{"rendered":"Red Hat Openshift: Getting started – Java EE6 in the Cloud"},"content":{"rendered":"
For a while now I\u2019m looking into \u2018the cloud\u2019. Looking into its features, what it can do, why we should switch to \u2018 the cloud\u2019, going to talks, talking to people like @maartenballiauw<\/a>, who is a cloud specialist at RealDolmen. I\u2019ve already deployed an application on google app engine (for java) and I really liked the experience. Some new concepts come into play like distributed data and so on.<\/p>\n

But in the recent chain of events, being more interested in the future of java EE, I looked into OpenShift.<\/p>\n

OpenShift <\/a>is a PaaS<\/a> offerd by Red Hat. The basic idea is to run Java EE 6 in the cloud and that is exactly what we want to do. I\u2019m using Ubuntu for this, so all my commands are based upon the Ubuntu distro.<\/em> Be sure to register for an account on openshift.redhat.com<\/a>, you will need it to create a domain and application.
\nStarting of we have to install ruby gems. The ruby gems are the interface to manage our cloud domain. So first we install the gems.<\/p>\n

$ sudo apt-get install git ruby rubygems ruby1.8-dev<\/pre>\n
We need git to checkout the code, the ruby packages is to install the gems. Now we install the gems.
 
<\/div> <\/div><\/p>\n
$ sudo gem install rhc<\/pre>\n
The rhc (red hat cloud I presume) is the base for all the commands that will be used to manipulate our openshift domain. So first we need to create a domain.<\/p>\n
The gems are standard deployed installed in the \/var\/lib\/gems\/1.8\/gems\/bin folder. We best add it to our $PATH variable for easy access. Now everything is ready to start working with openshift.
\nNow we want to create a domain. The domain is your work directory on OpenShift. Choose something unique and you will be able to access your applications via http:\/\/projectname-domainname.rhcloud.com<\/a>. To create your domain we need the \u2018rhc-create-domain\u2019 command.<\/p>\n
$ .\/rhc-create-domain -n domainname -l loginid<\/pre>\n
Now you will be promted for you password, just type it and you are done. Your domain is created.<\/p>\n
Your domain is setup, we now want to create an application.<\/p>\n
$ .\/rhc-create-app -a applicationName -t jbossas-7.0<\/pre>\n
The -t parameter indicates we will be running the application on a jbossas-7.0. The cool thing about creating an application on OpenShift is that we now have a fully setup git repository. When we push, the application is pushed to OpenShift.<\/p>\n
To start of I forked the seambooking example on github (https:\/\/github.com\/openshift\/seambooking-example)<\/a>. I did not really need to fork it, but it offers a good basic setup for OpenShift project. Once I\u2019ve added the code to my OpenShift git repository, I can simply do a git push.<\/p>\n
$ git push<\/pre>\n
The sample app is running, running in the cloud\u2026
\nMore information on http:\/\/openshift.redhat.com<\/a> and https:\/\/github.com\/openshift\/seambooking-example<\/p>\n
Reference<\/span>: <\/i><\/strong><\/a> Red Hat Openshift: Getting started – Java EE6 in the Cloud<\/a> from our JCG partner<\/a> Jelle Victoor at the Styled Ideas<\/a> blog.<\/p>\n
Related Articles :<\/i><\/strong><\/p>\n