# Miniflux > [Miniflux](https://miniflux.app/) is a minimalist and opinionated feed reader. This description sums up Miniflux pretty well. It's very simple to setup and operate, yet does exactly what it's supposed to: it manages RSS feeds. ## Environment variables Not much configuration is required by default to get things up and running. For the database, you have the usual PostgreSQL stuff: * `POSTGRES_DB`: database name * `POSTGRES_USER`: main user of the database * `POSTGRES_PASSWORD`: password for main user For Miniflux, I used the following defaults: * `DATABASE_URL`: this URL defines how to connect to the database. It follows the form `postgres://POSTGRES_USER:POSTGRES_PASSWORD@db/POSTGRES_DB?sslmode=disable` * `RUN_MIGRATIONS`: this lets Miniflux auto-migrate the database when needed (this is especially useful during initial startup) * `CREATE_ADMIN`: this allows us to create an admin account using env vars * `ADMIN_USERNAME`: admin username * `ADMIN_PASSWORD`: admin password Miniflux has many other variables you can set, which you can find [here](https://miniflux.app/docs/configuration.html).