graphql-engine/scripts/cli-migrations/v3

CLI Migrations

This docker image provides a method to run migrations and metadata at docker entrypoint. A temporary server is booted, with the migrations API allowed, securely through localhost. Once migrations and metadata have been applied, the server will reboot in a secure mode for inbound graphql usage.

See ./docker-entrypoint.sh

• CLI Migrations
  • Examples
    • Local
    • Heroku
      • Provision
      • Deploy
  • Configuration
    • Migrations Directory (Optional)
    • Metadata Directory (Optional)
    • Database (One of required)
    • GraphQL Server (Optional)

Examples

It is used in a docker file as:

FROM hasura/graphql-engine:<version>.cli-migrations-v3

CMD graphql-engine \
  --metadata-database-url $METADATA_DATABASE_URL \
  serve \
  --server-port $PORT \
  --enable-console

Local

This is covered in the documentation here: https://hasura.io/docs/latest/graphql/core/migrations/auto-apply-migrations.html The below Configuration will also be applicable.

Heroku

Using a docker build on heroku the manifest (heroku.yml) can look like:

setup:
  addons:
    - plan: heroku-postgresql
      as: DATABASE
  config:
    HASURA_METADATA_DATABASE_URL: DATABASE_URL
build:
  docker:
    web: Dockerfile

This allows you to provision and migrate a database entirely without intervention.

Provision

Setup the app, with addons and the setup steps defined in the heroku.yml

heroku create heroku-migration-tester --manifest

Deploy

export HEROKU_GIT_REMOTE=https://git.heroku.com/heroku-migration-tester.git
git init && git add .
git commit -m "first commit"
git remote add heroku HEROKU_GIT_REMOTE
git push heroku master

Configuration

You may set the following environment variables to configure the way this image is run.

Migrations Directory (Optional)

Migrations are either mounted or built into the image.

If it has been stored in a directory other than the default then it can be configured using the following:

• HASURA_GRAPHQL_MIGRATIONS_DIR (default=/hasura-migrations)

  A path to the migrations directory.

Metadata Directory (Optional)

Metadata are either mounted or built into the image.

If it has been stored in a directory other than the default then it can be configured using the following:

• HASURA_GRAPHQL_METADATA_DIR (default=/hasura-metadata)

  A path to the metadata directory.

GraphQL Server (Optional)

Optional configuration for the server which boots during migrations.

• HASURA_GRAPHQL_MIGRATIONS_SERVER_PORT (default=9691)

  Specify the port running the graphql server during execution of the migration script. It is advised that you do not specify a PORT that may be open e.g. 80/443 and the default should rarely require changing.

• HASURA_GRAPHQL_MIGRATIONS_SERVER_TIMEOUT (default=30s)

  Specify the server timeout threshold.