This stuff is pretty ugly but I works - so I’m going to include it here in case anyone else needs to set this up for kubernetes pod initialization…
mix.exs :
defmodule Examples.Mixfile do
use Mix.Project
def project do
[
app: :examples,
version: "0.0.1",
elixir: "1.10.1",
elixirc_paths: elixirc_paths(Mix.env()),
compilers: Mix.compilers(),
start_permanent: Mix.env() == :prod,
aliases: aliases(),
deps: deps(),
releases: [
examples: [
steps: [:assemble, ©_extra_files/1]
]
],
test_coverage: [tool: ExCoveralls]
]
end
defp copy_extra_files(release) do
dst = release.path <> "/bin/"
["create-db.sh", "migrate-db.sh", "setup-db.sh"]
|> Enum.each(fn f -> File.cp!("rel/" <> f, dst <> f) end)
release
end
.... ....
end
rel/create-db.sh :
#!/bin/sh
/opt/app/bin/examples eval "Application.load(:examples); Confex.resolve_env!(:examples); dbconf = Confex.fetch_env!(:examples, Examples.Repo); Application.put_env(:examples, Examples.Repo, dbconf); [ :crypto, :logger, :ssl, :telemetry, :postgrex, :ecto ] |> Enum.each(&(Application.ensure_all_started(&1))); IO.puts(inspect(Examples.Repo.__adapter__.storage_up( Examples.Repo.config)));"
rel/migrate-db.sh :
#!/bin/sh
/opt/app/bin/examples eval "Application.load(:examples); Confex.resolve_env!(:examples); dbconf = Confex.fetch_env!(:examples, Examples.Repo); Application.put_env(:examples, Examples.Repo, dbconf); [ :crypto, :logger, :ssl, :telemetry, :postgrex, :ecto , :ecto_sql ] |> Enum.each(&(Application.ensure_all_started(&1))); Examples.Repo.start_link ; Ecto.Migration.Supervisor.start_link ; Ecto.Migrator.run(Examples.Repo, Application.app_dir(:examples, \"priv/repo/migrations\"), :up, [all: true])"
rel/setup-db.sh
#!/bin/sh
/opt/app/bin/create-db.sh
/opt/app/bin/migrate-db.sh
