How to fix KMS provider not configured in Kubernetes

KubernetesADVANCEDHIGHUpdated Dec 7, 2025· 116 views

This error occurs when encryption at rest is expected or attempted, but no KMS provider has been configured on the API server, leaving data unencrypted.

Quick fix

Fixes KMS provider not configured

  1. Check encryption status
  2. Create config file
  3. Configure API server
  4. Install KMS plugin
  5. Test encryption
kubernetes — error
# KMS provider not configured
KMS provider not configured

What this error means

The "KMS provider not configured" error indicates that the API server is not configured with a KMS for encrypting data at rest.

Typical symptoms

  • API server logs show not configured
  • Secrets stored unencrypted
  • Encryption not working

Common causes

  1. API server started without flag
  2. Config file doesn't exist
  3. KMS was removed
  4. Plugin not installed

How to fix "KMS provider not configured"

1Check encryption status

kubectl get pods -n kube-system kube-apiserver-<node> -o yaml | grep encryption

2Create config file

sudo tee /etc/kubernetes/enc/provider.yaml

3Configure API server

sudo vim /etc/kubernetes/manifests/kube-apiserver.yaml

4Install KMS plugin

sudo curl -o /usr/local/bin/k8s-kms ...

5Test encryption

kubectl create secret generic test --from-literal=key=value

Advanced notes

Configuration: provider order matters, caching includes cachesize and timeout, auto-reload enabled.

Frequently asked questions

What does "KMS provider not configured" mean?
The "KMS provider not configured" error indicates that the API server is not configured with a KMS for encrypting data at rest.
How do I fix "KMS provider not configured"?
This error occurs when encryption at rest is expected or attempted, but no KMS provider has been configured on the API server, leaving data unencrypted.
What causes "KMS provider not configured"?
API server started without flag Config file doesn't exist KMS was removed
Is the "KMS provider not configured" error serious?
Yes. This is a high-severity error that usually blocks work until it is fixed, but the steps above resolve it.

Official resources & further reading