Cannot launch with zero-config postgres devservice database: "configured datasource <default> not found"

Quarkus fails to boot with a “zero config setup” for datasources as described in the datasource guide, which states:

If you want to use Dev Services then all you need to do is include the relevant extension for the type of database you want (either reactive or JDBC, or both), and don’t configure a database URL, username and password, Quarkus will provide the database and you can just start coding without worrying about config.

Instead, it asks me to configure the default data source.

reproduce

1. Go to code.quarkus.io
2. Select hibernate ORM and JDBC-PostgreSQL
3. download the project and try to run it with mvn quarkus:dev

Quarkus fails to boot with the following error:

2022-01-28 11:22:33,136 ERROR [io.qua.dep.dev.IsolatedDevModeMain] (Aesh InputStream Reader) Failed to start quarkus: java.lang.RuntimeException: java.lang.RuntimeException: Failed to start quarkus
        at io.quarkus.dev.appstate.ApplicationStateNotification.waitForApplicationStart(ApplicationStateNotification.java:51)
        [...]
        ... 1 more
Caused by: java.lang.RuntimeException: io.quarkus.runtime.configuration.ConfigurationException: Model classes are defined for the default persistence unit <default> but configured datasource <default> not found: the default EntityManagerFactory will not be created. To solve this, configure the default datasource. Refer to https://quarkus.io/guides/datasource for guidance.
        at io.quarkus.hibernate.orm.runtime.JPAConfig.startAll(JPAConfig.java:72)
        [...]

environment

quarkus 2.6.3
windows, with docker in WSL2 Ubuntu 20.04
OpenJDK Temurin-17.0.1+12
maven 3.8.2

[Felk]

@Felk I faced this and the problem is you need docker running on your windows, not on your wsl2 distro.

Oh, that is good to know, thank you! I switched from Docker Desktop to docker-ce in WSL2 due to Docker Desktop’s licensing changes, so there’s no going back for me.

My solution was to also run mvn quarkus:dev within WSL2, not on the Windows host machine. It then works as expected, very nice!

[gilvansfilho]

Sorry @Felk I hadn’t seen this before the last reply.

My solution was to also run mvn quarkus:dev within WSL2, not on the Windows host machine. It then works as expected, very nice!