Deploy failure of elixir app

Questions / Help
1

I’m following a tutorial and I’ve been trying to perform a first deploy of the app. However each time I try I get the results below: [Note: the error "ERROR! Config provider Config.Reader failed with: ** (RuntimeError) environment variable DATABASE_URL is missing." it’s expected and isn’t what I’m asking about. It’s the Error: release command failed - aborting deployment. error release_command machine d891691ce0d648 exited with non-zero status of 1 that is my concern.

--> Building image done
==> Pushing image to fly
The push refers to repository [registry.fly.io/bmvp-nqa]
1da7099c1a77: Pushed
3e48a32ab05e: Pushed
5ee9a3302d69: Pushed
d76c238f1e09: Pushed
06fd3110f897: Pushed
0cc1f0165626: Layer already exists
deployment-01H8WDF21ZM8WF2KPT631XR9YY: digest: sha256:e5b5aaa4228d777dcf3641f947e0cfa7ddf9db5f052fb8826463743b19b432e0 size: 1575
--> Pushing image done
image: registry.fly.io/bmvp-nqa:deployment-01H8WDF21ZM8WF2KPT631XR9YY
image size: 126 MB

Watch your deployment at https://fly.io/apps/bmvp-nqa/monitoring

Running bmvp-nqa release_command: /app/bin/migrate
  Waiting for d891691ce0d648 to get exit event
Error release_command failed running on machine d891691ce0d648 with exit code 1.
Check its logs: here's the last 100 lines below, or run 'fly logs -i d891691ce0d648':
  Pulling container image registry.fly.io/bmvp-nqa:deployment-01H8WDF21ZM8WF2KPT631XR9YY
  Successfully prepared image registry.fly.io/bmvp-nqa:deployment-01H8WDF21ZM8WF2KPT631XR9YY (10.585944598s)
  Configuring firecracker
  [    0.050755] PCI: Fatal: No config space access function found
   INFO Starting init (commit: b437b5b)...
   INFO Preparing to run: `/app/bin/migrate` as nobody
   INFO [fly api proxy] listening at /.fly/api
  2023/08/27 21:14:58 listening on [fdaa:2:7c52:a7b:13e:6fe4:3986:2]:22 (DNS: [fdaa::3]:53)
  ERROR! Config provider Config.Reader failed with:
  ** (RuntimeError) environment variable DATABASE_URL is missing.
  For example: ecto://USER:PASS@HOST/DATABASE
      /app/releases/0.1.0/runtime.exs:26: (file)
      (elixir 1.15.4) src/elixir.erl:376: anonymous fn/4 in :elixir.eval_external_handler/1
      (stdlib 5.0.2) erl_eval.erl:750: :erl_eval.do_apply/7
      (stdlib 5.0.2) erl_eval.erl:494: :erl_eval.expr/6
      (stdlib 5.0.2) erl_eval.erl:136: :erl_eval.exprs/6
      (elixir 1.15.4) src/elixir.erl:361: :elixir.eval_forms/4
      (elixir 1.15.4) lib/module/parallel_checker.ex:112: Module.ParallelChecker.verify/1
      (elixir 1.15.4) lib/code.ex:543: Code.validated_eval_string/3
  Runtime terminating during boot ({,[{elixir_eval,__FILE__,1,[{_},{_}]},{elixir,-eval_external_handler/1-fun-2-,4,[{_},{_},{_}]},{erl_eval,do_apply,7,[{_},{_}]},{erl_eval,expr,6,[{_},{_}]},{erl_eval,exprs,6,[{_},{_}]},{elixir,eval_forms,4,[{_},{_}]},{Elixir.Module.ParallelChecker,verify,1,[{_},{_}]},{Elixir.Code,validated_eval_string,3,[{_},{_}]}]})
  Crash dump is being written to: erl_crash.dump...done
   INFO Main child exited normally with code: 1
   INFO Starting clean up.
   WARN hallpass exited, pid: 267, status: signal: 15 (SIGTERM)
  2023/08/27 21:15:00 listening on [fdaa:2:7c52:a7b:13e:6fe4:3986:2]:22 (DNS: [fdaa::3]:53)
  [    3.571678] reboot: Restarting system
  machine restart policy set to 'no', not restarting
Error: release command failed - aborting deployment. error release_command machine d891691ce0d648 exited with non-zero status of 1
2

Could you share which tutorial you are following?

3

It’s a paid video course Peter Ulrich “Build an MVP with Elixir” so I can’t share without his permission.

4

Does the course include the fly.toml configuration or did you write it? If so, could you share that?

5

What this likely means is either that you didn’t say “yes” when asked if you wanted a postgres database when running fly launch, or that you didn’t run fly postgres connect · Fly Docs. If you don’t already have a postgresql database, you can create one with fly postgres create · Fly Docs.

it is hard to provide more specific instructions without seeing your tutorial, but it seems likely that if you create and connect a database you will be up and running.

6

The fly.toml was generated and is as follows:

# fly.toml app configuration file generated for bmvp-nqa on 2023-08-27T21:40:33+01:00
#
# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
#

app = "bmvp-nqa"
primary_region = "lhr"
kill_signal = "SIGTERM"
swap_size_mb = 512

[build]

[deploy]
  release_command = "/app/bin/migrate"

[env]
  PHX_HOST = "bmvp-nqa.fly.dev"
  PORT = "8080"

[http_service]
  internal_port = 8080
  force_https = true
  auto_stop_machines = true
  auto_start_machines = true
  min_machines_running = 0
  processes = ["app"]
  [http_service.concurrency]
    type = "connections"
    hard_limit = 1000
    soft_limit = 1000
7

Yeah this error is expected and isn’t what I’m seeking help for. It’s the Error: release command failed - aborting deployment. error release_command machine d891691ce0d648 exited with non-zero status of 1 that i’m concerned about. Thanks

8

Note: that’s the release command that is failing. It seems likely that it is failing because environment variable DATABASE_URL is missing.

9

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