Create Kubernetes Service / User Account restricted to one Namespace

1. Can a service account have multiple role bindings?
2. How do I give permission to Kubernetes service account?
3. How do I restrict access to namespace in Kubernetes?
4. How do I restrict namespaces?
5. What is the difference between RBAC and ABAC?
6. What is role and RoleBinding in Kubernetes?
7. How do I manage users in Kubernetes?
8. How service account works in Kubernetes?
9. What is service account in EKS?
10. Is it possible to mount secrets to pods?
11. What is namespace in Kubernetes?
12. How do I know if my cluster is Rbac enabled?

Can a service account have multiple role bindings?

For example, whether a user or service account can create pods. Collections of rules. You can associate, or bind, users and groups to multiple roles.

How do I give permission to Kubernetes service account?

Use Multiple Service Accounts.

You may use authorization plugins to set permissions on service accounts. To use a non-default service account, set the spec. serviceAccountName field of a pod to the name of the service account you wish to use.

How do I restrict access to namespace in Kubernetes?

To achieve this, you have to create Roles (or a ClusterRole) and RoleBindings in those namespaces that you want to grant access to the users. Here is how you can grant access to all resources for the dev-team user in the dev and qa namespace but deny access to any resources in any other namespace.

How do I restrict namespaces?

Restrict cross-namespace resource associationsedit

1. Create a ClusterRole to allow HTTP GET requests to be run against Elasticsearch objects: ...
2. Create a ServiceAccount and a RoleBinding in the Elasticsearch namespace to allow any resource using the ServiceAccount to associate with the Elasticsearch cluster:

What is the difference between RBAC and ABAC?

The primary difference between RBAC and ABAC is RBAC provides access to resources or information based on user roles, while ABAC provides access rights based on user, environment, or resource attributes. ... ABAC, RBAC controls broad access across an organization, while ABAC takes a fine-grain approach.

What is role and RoleBinding in Kubernetes?

A role binding grants the permissions defined in a role to a user or set of users. It holds a list of subjects (users, groups, or service accounts), and a reference to the role being granted. A RoleBinding grants permissions within a specific namespace whereas a ClusterRoleBinding grants that access cluster-wide.

How do I manage users in Kubernetes?

Kubernetes doesn't manage users. Normal users are assumed to be managed by an outside, independent service like LDAP or Active Directory. In a standard installation of Kubernetes (i.e., using kubeadm), authentication is done via standard transport level security (TLS) certificates.

How service account works in Kubernetes?

In Kubernetes, service accounts are used to provide an identity for pods. Pods that want to interact with the API server will authenticate with a particular service account. By default, applications will authenticate as the default service account in the namespace they are running in.

What is service account in EKS?

This service account can then provide AWS permissions to the containers in any pod that uses that service account. ... With this feature, you no longer need to provide extended permissions to the Amazon EKS node IAM role so that pods on that node can call AWS APIs.

Is it possible to mount secrets to pods?

Secrets can be mounted as data volumes or exposed as environment variables to be used by a container in a Pod. Secrets can also be used by other parts of the system, without being directly exposed to the Pod.

What is namespace in Kubernetes?

Namespaces are Kubernetes objects which partition a single Kubernetes cluster into multiple virtual clusters. Each Kubernetes namespace provides the scope for Kubernetes Names it contains; which means that using the combination of an object name and a Namespace, each object gets an unique identity across the cluster.

How do I know if my cluster is Rbac enabled?

You can check this by executing the command kubectl api-versions ; if RBAC is enabled you should see the API version . rbac.authorization.k8s.io/v1 . If you can execute it you should either see RBAC listed there or not, and if you don't have the permissions to do it, well, chances are that RBAC is enabled.