SealedSecrets Lets Teams Safely Store Kubernetes Secrets in Git Repos
GitOps teams often struggle with storing sensitive credentials like API keys and database passwords in Git, since base64 encoding offers no real security and plaintext commits risk exposure. SealedSecrets, built by Bitnami, addresses this by using asymmetric RSA encryption through a lightweight in-cluster controller and a CLI tool called kubeseal. When installed, the controller generates a key pair on startup, keeping the private key inside the cluster while allowing the public key to be freely shared. Developers encrypt standard Kubernetes Secrets using kubeseal, producing a SealedSecret custom resource that is safe to commit to any repository, public or private. Only the in-cluster controller holding the matching private key can decrypt the resource, making it one of the simplest Kubernetes-native solutions for secure secret management in GitOps workflows.
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