Zookeeper

Detailed information on the Zookeeper state store component

Setup a Zookeeper state store

You can run Zookeeper locally using Docker:

  1. docker run --name some-zookeeper --restart always -d zookeeper

You can then interact with the server using localhost:2181.

The easiest way to install Zookeeper on Kubernetes is by using the Helm chart:

  1. helm repo add incubator http://storage.googleapis.com/kubernetes-charts-incubator
  2. helm install zookeeper incubator/zookeeper

This will install Zookeeper into the default namespace. To interact with Zookeeper, find the service with: kubectl get svc zookeeper.

For example, if installing using the example above, the Zookeeper host address would be:

zookeeper.default.svc.cluster.local:2181

Create a Dapr component

The next step is to create a Dapr component for Zookeeper.

Create the following YAML file named zookeeper.yaml:

  1. apiVersion: dapr.io/v1alpha1
  2. kind: Component
  3. metadata:
  4. name: <NAME>
  5. namespace: <NAMESPACE>
  6. spec:
  7. type: state.zookeeper
  8. version: v1
  9. metadata:
  10. - name: servers
  11. value: <REPLACE-WITH-COMMA-DELIMITED-SERVERS> # Required. Example: "zookeeper.default.svc.cluster.local:2181"
  12. - name: sessionTimeout
  13. value: <REPLACE-WITH-SESSION-TIMEOUT> # Required. Example: "5s"
  14. - name: maxBufferSize
  15. value: <REPLACE-WITH-MAX-BUFFER-SIZE> # Optional. default: "1048576"
  16. - name: maxConnBufferSize
  17. value: <REPLACE-WITH-MAX-CONN-BUFFER-SIZE> # Optional. default: "1048576"
  18. - name: keyPrefixPath
  19. value: <REPLACE-WITH-KEY-PREFIX-PATH> # Optional.

Warning

The above example uses secrets as plain strings. It is recommended to use a secret store for the secrets as described here.

Apply the configuration

In Kubernetes

To apply the Zookeeper state store to Kubernetes, use the kubectl CLI:

  1. kubectl apply -f zookeeper.yaml

Running locally

To run locally, create a components dir containing the YAML file and provide the path to the dapr run command with the flag --components-path.

Last modified February 16, 2021: Merge pull request #1235 from dapr/update-v0.11 (b4e9fbb)