Grant Shipley, a PaaS Evangelist with OpenShift, recently published a tutorial focused on getting started with OpenShift Enterprise PaaS. This is the first in a series of tutorials for devs or system admins who are already comfortable with installing Red Hat Enterprise Linux. Here's a bit of the intro, followed by a link to the full post.
Platform as a Service is changing the way developers approach developing software. Developers typically use a local sandbox with their preferred application server and only deploy locally on that instance. Developers typically start JBoss locally using the startup.sh command and drop their .war or .ear file in the deployment directory and they are done. Developers have a hard time understanding why deploying to the production infrastructure is such a time consuming process.
System Administrators understand the complexity of not only deploying the code, but procuring, provisioning and maintaining a production level system. They need to stay up to date on the latest security patches and errata, ensure the firewall is properly configured, maintain a consistent and reliable backup and restore plan, monitor the application and servers for CPU load, disk IO, HTTP requests, etc.