Introduction

A domain represents a unique name for each user within which each user application must exist. OpenShift users cannot create an application until they have a valid domain. The domain name becomes a part of the application URL. For example, if your domain name is foo and your application name is bar, the application URL will be http://bar-foo.rhcloud.com. Every OpenShift account must have at least one domain associated with it. The OpenShift Online free tier does not allow a user to create more than one domain, but you can create more than one domain in paid tiers. The domains make it possible for users to choose any valid name for their application. They allow two or more users to have the same name for their applications. For example, user A can have an application named bar in domain foo, and similarly, user B can also have an application named bar in domain test. Once a user has a valid domain, he/she can use any valid name for their application.

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