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Issue description : Ch03s04 and Ch10s02 has two different tasks to give admin role to a subject : 

In the G.E. define and apply permissions, step 3.3 the command used to grant admin permisions is:

oc policy add-role-to-user admin username. 

but in the comprehensive review the command used to again grant admin permissions is:

oc adm policy add-cluster-role-to-user admin username.

Can you explain how the same role is used once with add-cluster-role and other time is used with add-role?

and this command too:

oc adm policy add-role-to-user admin alice -n joe-project given in the offical doc https://docs.openshift.com/container-platform/3.11/admin_guide/manage_rbac.html#:~:text=Users%20with%20the%20cluster-admin,in%20the%20Evaluating%20Authorization%20section. 

for both local and cluster role bindings we will use : oc adm policy ? or for locally we can use oc policy as well ?

Also, the "Admin" role is a project specific role as per the K8 docs or OpenShift docs and cluster-admin is a cluster wide super user role -right ? There is an ambiguity and learners often confuse about this - please help in clarifying this. 

Please also take a look at : https://issues.redhat.com/browse/PTL-8710 for a similar confusion. 

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