Kubernetes Authentication & Authorization 101

Kubernetes Authentication & Authorization 101

Kubernetes Authentication & Authorization 101. How do you login in Kubernetes clusters? How can you grant permissions to your apps? If we want to build a system with user modules, Authentication and Authorization are something that we can never ignore, though they could be fuzzy to understand.

If we want to build a system with user modules, Authentication and Authorization are something that we can never ignore, though they could be fuzzy to understand.

Kubernetes Authentication & Authorization, by author

Authentication_ (from [Greek_](https://en.wikipedia.org/wiki/Greek_language): αὐθεντικός authentikos, “real, genuine”, from αὐθέντης authentes, “author”) is the act of [proving_](https://en.wikipedia.org/wiki/Proof(truth))_ an [assertion_](https://en.wikipedia.org/wiki/Logical_assertion), such as the [identity_](https://en.wikipedia.org/wiki/Digital_identity) of a computer system user — from [wiki_](https://en.wikipedia.org/wiki/Authentication)

Authorization_ is the function of specifying access rights/privileges to resources, which is related to general [information security_](https://en.wikipedia.org/wiki/Information_security)_ and [computer security_](https://en.wikipedia.org/wiki/Computer_security), and to [access control_](https://en.wikipedia.org/wiki/Access_control) in particular. — from [wiki_](https://en.wikipedia.org/wiki/Authorization)

You can simply conclude into two points.

  • *Who are you? *Authentication enables the users to login into the system correctly.
  • *What can you do? *Authorization grants proper permissions to the users.

This article will decrypt Kubernetes Authentication and Authorization, hoping you will no longer be puzzled by the following questions.

  • What are the users on Kubernetes?
  • How to verify user identity?
  • What is RBAC?
  • How to setup RBAC for users?

authentication kubernetes authorization

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