Lab
Cloud
Security

Generating a Data Encryption Config for Kubernetes

Kubernetes offers the ability to encrypt sensitive data at rest. In order to take advantage of this feature, it is necessary to generate an encryption key and a data encryption config. In this learning activity, you will learn how to generate an encryption key and a data encryption config file for Kubernetes.

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Path Info

Level

Intermediate

Duration

1h 0m

Last updated

May 06, 2025

Challenge

Generate an encryption key and include it in a Kubernetes data encryption config file.

To accomplish this task, do the following on the workspace server:

ENCRYPTION_KEY=$(head -c 32 /dev/urandom | base64)

cat > encryption-config.yaml << EOF
kind: EncryptionConfig
apiVersion: v1
resources:
  - resources:
      - secrets
    providers:
      - aescbc:
          keys:
            - name: key1
              secret: ${ENCRYPTION_KEY}
      - identity: {}
EOF

Challenge

Copy the file to the Kubernetes controller servers.
Copy encryption-config.yaml to each Kubernetes controller by running these commands from the workspace server. Be sure to replace the placeholders with the actual IP addresses of the controller servers.
```
scp encryption-config.yaml cloud_user@&lt;controller 1 public ip>:~/
scp encryption-config.yaml cloud_user@&lt;controller 2 public ip>:~/
```

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