The documentation you are viewing is for Dapr v1.13 which is an older version of Dapr. For up-to-date documentation, see the latest version.
Enable API token authentication in Dapr
By default, Dapr relies on the network boundary to limit access to its public API. If you plan on exposing the Dapr API outside of that boundary, or if your deployment demands an additional level of security, consider enabling the token authentication for Dapr APIs. This will cause Dapr to require every incoming gRPC and HTTP request for its APIs for to include authentication token, before allowing that request to pass through.
Create a token
Dapr uses shared tokens for API authentication. You are free to define the API token to use.
Although Dapr does not impose any format for the shared token, a good idea is to generate a random byte sequence and encode it to Base64. For example, this command generates a random 32-byte key and encodes that as Base64:
openssl rand 16 | base64
Configure API token authentication in Dapr
The token authentication configuration is slightly different for either Kubernetes or self-hosted Dapr deployments:
Self-hosted
In self-hosting scenario, Dapr looks for the presence of DAPR_API_TOKEN
environment variable. If that environment variable is set when the daprd
process launches, Dapr enforces authentication on its public APIs:
export DAPR_API_TOKEN=<token>
To rotate the configured token, update the DAPR_API_TOKEN
environment variable to the new value and restart the daprd
process.
Kubernetes
In a Kubernetes deployment, Dapr leverages Kubernetes secrets store to hold the shared token. To configure Dapr APIs authentication, start by creating a new secret:
kubectl create secret generic dapr-api-token --from-literal=token=<token>
Note, the above secret needs to be created in each namespace in which you want to enable Dapr token authentication.
To indicate to Dapr to use that secret to secure its public APIs, add an annotation to your Deployment template spec:
annotations:
dapr.io/enabled: "true"
dapr.io/api-token-secret: "dapr-api-token" # name of the Kubernetes secret
When deployed, Dapr sidecar injector will automatically create a secret reference and inject the actual value into DAPR_API_TOKEN
environment variable.
Rotate a token
Self-hosted
To rotate the configured token in self-hosted, update the DAPR_API_TOKEN
environment variable to the new value and restart the daprd
process.
Kubernetes
To rotate the configured token in Kubernetes, update the previously-created secret with the new token in each namespace. You can do that using kubectl patch
command, but a simpler way to update these in each namespace is by using a manifest:
apiVersion: v1
kind: Secret
metadata:
name: dapr-api-token
type: Opaque
data:
token: <your-new-token>
And then apply it to each namespace:
kubectl apply --file token-secret.yaml --namespace <namespace-name>
To tell Dapr to start using the new token, trigger a rolling upgrade to each one of your deployments:
kubectl rollout restart deployment/<deployment-name> --namespace <namespace-name>
Assuming your service is configured with more than one replica, the key rotation process does not result in any downtime.
Adding API token to client API invocations
Once token authentication is configured in Dapr, all clients invoking Dapr API need to append the dapr-api-token
token to every request.
Note: The Dapr SDKs read the DAPR_API_TOKEN environment variable and set it for you by default.
![](/images/tokens-auth.png)
HTTP
In case of HTTP, Dapr requires the API token in the dapr-api-token
header. For example:
GET http://<daprAddress>/v1.0/metadata
dapr-api-token: <token>
Using curl, you can pass the header using the --header
(or -H
) option. For example:
curl http://localhost:3500/v1.0/metadata \
--header "dapr-api-token: my-token"
gRPC
When using gRPC protocol, Dapr will inspect the incoming calls for the API token on the gRPC metadata:
dapr-api-token[0].
Accessing the token from the app
Kubernetes
In Kubernetes, it’s recommended to mount the secret to your pod as an environment variable, as shown in the example below, where a Kubernetes secret with the name dapr-api-token
is used to hold the token.
containers:
- name: mycontainer
image: myregistry/myapp
envFrom:
- secretRef:
name: dapr-api-token
Self-hosted
In self-hosted mode, you can set the token as an environment variable for your app:
export DAPR_API_TOKEN=<my-dapr-token>
Related Links
- Learn about Dapr security concepts
- Learn HowTo authenticate requests from Dapr using token authentication
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