when usinf fabric8-maven-plugin, by default it supposed that you used "oc login " to the correct project but if you start to have several projects/instances you can't do that. If you are in Eclipse, the oc login is done a single time and it is not transparent to know what is thr current context.
To avoid errors, user needs to provide several parameters:

• kubernets.master
• kubernetes.auth.basic.username
• kubernetes.basic;password
• fabric8.mode (set to openshift)
• kubernetes.trust.certificates set to true in case of local Openshift instance
• kubernetes.namespace
• (maybe) fabric8.build.strategy set to s2i

and to use fabric8:deploy option

We need to prefill these parameters in a Maven Launch configuration (or create a dedicated launch configuration?)