PostgreSQL

Detailed information on the PostgreSQL state store component

Create a Dapr component

Create a file called postgres.yaml, paste the following and replace the <CONNECTION STRING> value with your connection string. The connection string is a standard PostgreSQL connection string. For example, "host=localhost user=postgres password=example port=5432 connect_timeout=10 database=dapr_test". See the PostgreSQL documentation on database connections, specifically Keyword/Value Connection Strings, for information on how to define a connection string.

If you want to also configure PostgreSQL to store actors, add the actorStateStore configuration element shown below.

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

Warning

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

Spec metadata fields

If you wish to use PostgreSQL as an actor store, append the following to the yaml.

  - name: actorStateStore
    value: "true"

Create PostgreSQL

• Self-Hosted

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

   This example does not describe a production configuration because it sets the password in plain text and the user name is left as the PostgreSQL default of “postgres”.

   docker run -p 5432:5432 -e POSTGRES_PASSWORD=example postgres

2. Create a database for state data. Either the default “postgres” database can be used, or create a new database for storing state data.

   To create a new database in PostgreSQL, run the following SQL command:

   create database dapr_test

相关链接

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

Last modified January 1, 0001