How to start Phoenix by using PostgreSQL through container?

0
votes

I tried:

$ alias psql="docker exec -ti pg-hello-phoenix sh -c 'exec psql -h localhost -p 5432 -U postgres'"
$ mix ecto.create

but got:

** (RuntimeError) could not find executable psql in path, please guarantee it is available before running ecto commands lib/ecto/adapters/postgres.ex:106: Ecto.Adapters.Postgres.run_with_psql/2 lib/ecto/adapters/postgres.ex:83: Ecto.Adapters.Postgres.storage_up/1 lib/mix/tasks/ecto.create.ex:34: anonymous fn/2 in Mix.Tasks.Ecto.Create.run/1 (elixir) lib/enum.ex:604: Enum."-each/2-lists^foreach/1-0-"/2 (elixir) lib/enum.ex:604: Enum.each/2 (mix) lib/mix/cli.ex:58: Mix.CLI.run_task/2 (elixir) lib/code.ex:363: Code.require_file/2

Also I tried to create symlink /usr/local/bin/psql:

#!/usr/bin/env bash

docker exec -ti pg-hello-phoenix sh -c "exec psql -h localhost -p 5432 -U postgres $@"

and then:

$ sudo chmod +x /usr/local/bin/psql

check:

$ which psql
/usr/local/bin/psql
$ psql --version
psql (PostgreSQL) 9.5.1

run again:

$ mix ecto.create
** (Mix) The database for HelloPhoenix.Repo couldn't be created, reason given: cannot enable tty mode on non tty input
.

Container with PostgreSQL is launched:

$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
013464d7227e        postgres            "/docker-entrypoint.s"   47 minutes ago      Up 47 minutes       5432/tcp            pg-hello-phoenix
2
postgresqldockerphoenix-framework

2 Answers

1
votes

I was able to do this by going into /config/.exs In my case it was development, so /config/dev.exs and left the hostname as localhost but added another setting for port: 32768 because that's the port that docker exposed.

Make sure to put a space between the port: and the number (not string). Otherwise it won't work.

Worked as usual after that. The natural assumption is that the username / password matches on the container as well.

0
votes

To me I did the following:

sudo docker exec -it postgres-db bash

After I got the interactive shell

psql -h localhost -p 5432 -U postgres

Then I create my db manually:

CREATE DATABASE cars_dev;

Then finally:

mix ecto.migrate

Everything worked fine after that :) hope it helps.