CockroachDB

Detailed information on the CockroachDB state store component

Create a Dapr component

Create a file called cockroachdb.yaml, paste the following and replace the <CONNECTION STRING> value with your connection string. The connection string for CockroachDB follow the same standard for PostgreSQL connection string. For example, "host=localhost user=root port=26257 connect_timeout=10 database=dapr_test". See the CockroachDB documentation on database connections for information on how to define a connection string.

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: <NAME>
  namespace: <NAMESPACE>
spec:
  type: state.cockroachdb
  version: v1
  metadata:
  - name: connectionString
    value: "<CONNECTION STRING>"

Spec metadata fields

Setup CockroachDB

• Self-Hosted
• Kubernetes

1. Run an instance of CockroachDB. You can run a local instance of CockroachDB in Docker CE with the following command:

   This example does not describe a production configuration because it sets a single-node cluster, it’s only recommend for local environment.

   docker run --name roach1 -p 26257:26257 cockroachdb/cockroach:v21.2.3 start-single-node --insecure

2. Create a database for state data.

   To create a new database in CockroachDB, run the following SQL command inside container:

   docker exec -it roach1 ./cockroach sql --insecure -e 'create database dapr_test'

The easiest way to install CockroachDB on Kubernetes is by using the CockroachDB Operator:

Related links

• Basic schema for a Dapr component
• Read this guide for instructions on configuring state store components
• State management building block

Last modified June 23, 2022: Merge pull request #2550 from ItalyPaleAle/cosmosdb-harcoded-dapr-version (cf03237)