44 lines
1.2 KiB
Markdown
44 lines
1.2 KiB
Markdown
# Generating the Data Encryption Config and Key
|
|
|
|
Kubernetes stores a variety of data including cluster state, application configurations, and secrets. Kubernetes supports the ability to [encrypt](https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/) cluster data at rest.
|
|
|
|
In this lab you will generate an encryption key and an [encryption config](https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/#understanding-the-encryption-at-rest-configuration) suitable for encrypting Kubernetes Secrets.
|
|
|
|
## The Encryption Key
|
|
|
|
Generate an encryption key:
|
|
|
|
```
|
|
ENCRYPTION_KEY="$(head -c 32 /dev/urandom | base64)"
|
|
```
|
|
|
|
## The Encryption Config File
|
|
|
|
Create the `encryption-config.yaml` encryption config file:
|
|
|
|
```
|
|
cat <<EOF >encryption-config.yaml
|
|
apiVersion: v1
|
|
kind: EncryptionConfig
|
|
resources:
|
|
- resources:
|
|
- secrets
|
|
providers:
|
|
- aescbc:
|
|
keys:
|
|
- name: key1
|
|
secret: ${ENCRYPTION_KEY}
|
|
- identity: {}
|
|
EOF
|
|
```
|
|
|
|
Copy the `encryption-config.yaml` encryption config file to each controller instance:
|
|
|
|
```
|
|
for instance in controller-0 controller-1 controller-2; do
|
|
gcloud compute scp encryption-config.yaml "${instance}:"
|
|
done
|
|
```
|
|
|
|
Next: [Bootstrapping the etcd Cluster](./07-bootstrapping-etcd.md)
|