Overview of Dapr on Kubernetes
Dapr can be configured to run on any Kubernetes cluster. In Kubernetes the
dapr-operator services provide first class integration to launch Dapr as a sidecar container in the same pod as the service container and provide notifications of Dapr component updates provisioned into the cluster. Additionally, the
dapr-sidecar-injector also injects the environment variables
DAPR_GRPC_PORT into all the containers in the pod to enable user defined applications to easily communicate with Dapr without hardcoding Dapr port values.
dapr-sentry service is a certificate authority that enables mutual TLS between Dapr sidecar instances for secure data encryption. For more information on the
Sentry service read the security overview
Deploying and running a Dapr enabled application into your Kubernetes cluster is a simple as adding a few annotations to the deployment schemes. To give your service an
port known to Dapr, turn on tracing through configuration and launch the Dapr sidecar container, you annotate your Kubernetes deployment like this.
annotations: dapr.io/enabled: "true" dapr.io/app-id: "nodeapp" dapr.io/app-port: "3000" dapr.io/config: "tracing"
You can see some examples here in the Kubernetes getting started sample.
Read Kubernetes how to topics for more information about setting up Kubernetes and Dapr.