The documentation you are viewing is for Dapr v1.3 which is an older version of Dapr. For up-to-date documentation, see the latest version.
Dapr sidecar injector overview
When running Dapr in Kubernetes mode, a pod is created running the dapr-sidecar-injector service, which looks for pods initialized with the Dapr annotations, and then creates another container in that pod for the daprd service
Running the sidecar injector
The sidecar injector service is deployed as part of
dapr init -k, or via the Dapr Helm charts. For more information on running Dapr on Kubernetes, visit the Kubernetes hosting page.