How to Manage Kubernetes Secrets Securely in Git

We’ll use Sealed Secret, designed to easily fit into automated workflows like GitOps. In this article, we will install the Sealed Secrets operator and demonstrate how to use it. How to Manage Kubernetes Secrets Securely in Git

Introduction

Kubernetes has a declarative approach to managing resources. While it’s a common practice to keep the Kubernetes manifest files in a Git repository, storing and managing Kubernetes secrets has always been a challenge.  Sealed Secrets was developed to address this problem.

Sealed Secrets is a Kubernetes operator that allows you to store secrets in Git. It uses asymmetric key encryption to encrypt the secrets so that only the operator in the Kubernetes cluster can decrypt them. Therefore, the encrypted SealedSecrets are safe to store in a Git repository.

In this article, we will install the Sealed Secrets operator and demonstrate how to use it.

Sealed Secrets is composed of two parts:

• The Sealed Secrets operator which runs in the Kubernetes cluster
• The kubeseal client-side command-line tool, which is used to encrypt the secrets and generates the SealedSecrets Kubernetes resources.

Prerequisites

kubectl connected to a Kubernetes cluster

Install kubeseal

kubeseal is a command-line tool to encrypt secrets and generate SealedSecrets. On macOS, you can install kubeseal with Homebrew.

brew install kubeseal

You can find installation instructions for other platforms here:  https://github.com/bitnami-labs/sealed-secrets#installation

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