Amazon EKS: Create Role Definition

The Service Account created in the previous chapter needs to be governed by some roles. These roles are defined in an orderly fashion as a YAML file and deployed in your Kubernetes cluster.

Amazon EKS: Create Manifest File for Role Definition

To define the roles required by the service account, you need to create a YAML file. The file role.yaml, with its contents, is shown below:

Note

The parameters required to create this YAML file, ready to be deployed, are explained in the Properties section.

kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  creationTimestamp: null
  name: ncache-operator
rules:
- apiGroups:
  - ""
  resources:
  - pods
  - services
  - endpoints
  - persistentvolumeclaims
  - events
  - configmaps
  - secrets
  verbs:
  - '*'
- apiGroups:
  - apps
  resources:
  - deployments
  - daemonsets
  - replicasets
  - statefulsets
  verbs:
  - '*'
- apiGroups:
  - monitoring.coreos.com
  resources:
  - servicemonitors
  verbs:
  - get
  - create
- apiGroups:
  - apps
  resourceNames:
  - ncache-operator
  resources:
  - deployments/finalizers
  verbs:
  - update
- apiGroups:
  - alachisoft.ncache
  resources:
  - '*'
  - ncaches
  verbs:
  - '*'

Create Role Definition in Kubernetes Cluster

Executing the following kubectl command will ensure that the role.yaml file gets deployed within the Amazon EKS cluster.

kubectl create -f [dir]/role.yaml

Properties

The properties required to create a role in Amazon EKS are explained below:

Parameter	Description
-kind	This can be many different types like a Deployment, a Service, a DaemonSet or a StatefulSet. In this case it will be a Role.
-apiVersion	Specifies the version of the kind and it depends on the underlying version of Kubernetes.
-name	Specifies the name of the Operator you will deploy that needs access to the service account.
-rules	Specifies the set of rules required for deployment of the role.
-apiGroups	Specifies the name and details of all or some API groups.

The next step is to bind these roles with the service account, the steps of which have been explained in the next chapter.

See Also

Create Service Account
Create Role Binding
Create NCache Operator
Create Custom Resources