@Scout how do I connect and store Dagster run data in Postgres, instead of SQLite using single environment variable

To configure your Dagster instance to use PostgreSQL for run storage with a single environment variable, you can set up your

dagster.yaml

file to use an environment variable for the PostgreSQL connection string. Here's how you can do it based on the documentation: 1. Install the

dagster-postgres

library if you haven't already, as it's required to use PostgreSQL storage with Dagster. 2. Define the PostgreSQL connection string as an environment variable in your environment. For example, you might set an environment variable like this in your shell:

sh    export PG_DB_CONN_STRING="<postgresql://username:password@hostname:port/dbname>"

3. In your

dagster.yaml

file, configure the

storage

section to use the environment variable for the PostgreSQL connection string. Here's an example configuration:

yaml    storage:      postgres:        postgres_url:          env: PG_DB_CONN_STRING

With this configuration, Dagster will use the connection string provided by the

PG_DB_CONN_STRING

environment variable to connect to your PostgreSQL database for storing run data. Make sure to replace

username

,

password

,

hostname

,

port

, and

dbname

with your actual PostgreSQL credentials and database information in the environment variable. Remember to restart your Dagster instance after making changes to the

dagster.yaml

file for the new configuration to take effect.

@Scout what does the

PG_DB_CONN_STRING

look like ?

The

PG_DB_CONN_STRING

is an environment variable that holds the PostgreSQL database connection string. A PostgreSQL connection string is a URI that contains the information needed to connect to a PostgreSQL database. It typically includes the username, password, hostname, port, and database name. Here is an example of what a PostgreSQL connection string might look like:

<postgresql://username:password@hostname:port/dbname>

- `username`: Your database username. - `password`: Your database password. - `hostname`: The hostname where your PostgreSQL server is running. This could be an IP address or a domain name. - `port`: The port number on which your PostgreSQL server is listening. The default PostgreSQL port is

5432

. - `dbname`: The name of the database you want to connect to. In a real-world scenario, you would replace

username

,

password

,

hostname

,

port

, and

dbname

with your actual database credentials and connection details. For example, if your PostgreSQL database has the following details: - Username:

myuser

- Password:

mypassword

- Hostname:

<http://mydb.example.com|mydb.example.com>

- Port:

5432

- Database Name:

mydatabase

Then your connection string would look like this:

<postgresql://myuser:mypassword@mydb.example.com:5432/mydatabase>

You would then set the

PG_DB_CONN_STRING

environment variable to this connection string before running your Dagster instance.