this post was submitted on 27 Jul 2023
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Connection to server at "127.0.0.1", port 5432 failed: Connection refused (self.docker)
submitted 1 year ago by sunwoo1524 to c/docker
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FastAPI container fails to connect to PostgreSQL.
However, the PostgreSQL container is running well and accessible.
I don't know why this problem is happening.
Here is gist link of Dockerfile, docker-compose.yaml and log when docker-compose is run. https://gist.github.com/sunwoo1524/9f75b4d3fd295c9829705e23a3b8094d

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[โ€“] superpants 2 points 1 year ago (1 children)

Sorry, I misread your compose file. It should be the name of the PG container, so db:5432

[โ€“] sunwoo1524 1 points 1 year ago

Thanks!
I also added

depends_on:
      - db

to docker-compose.yaml and fixed the issue!