elston / migratx

Example of organised migration environment in docker platform

migratx

Example of organised migration environment in docker platform

Technology

• Docker
• Python 2.7
• SQLAlchemy
• Alembic
• Flask-Migrate
• MySql 5.7
• Virtualenv

Getting Started with Docker and Docker Compose for Local Development

Install Docker

https://docs.docker.com/installation/

Install Docker Compose

http://docs.docker.com/compose/install/

Install the app's

In the project ./book/dev/ (where the Makefile file is located), run:

make build_all

then

make bootstrap_all

then

make db_run

then test db

make db_test

if all OK, down db

make down

then migrate db

make migrate_migrator

To run any command inside the Django Docker container, simply prepend:

make shell_synchro

This will start the containers in the debug mode.

When you need finish all containers:

make down

For help all make commands

make help

View the images

make images

View the volumes

make volumes

Clear untagged Docker containers

make clear

To view runing Docker containers

make ps

Hand made migrations

first

make shell_migrator
workon migrator
cd /migrator

Next

./manage.py db init   

./manage.py db revision --autogenerate -m "initial"

./manage.py db upgrade

./manage.py db downgrade

Helper for command ./manage.py --help:

positional arguments:
  {shell,db,runserver}
    shell               Runs a Python shell inside Flask application context.
    db                  Perform database migrations
    runserver           Runs the Flask development server i.e. app.run()

Helper for command ./manage.py db --help:

positional arguments:
  {upgrade,heads,merge,migrate,stamp,show,current,edit,init,downgrade,branches,history,revision}
    upgrade             Upgrade to a later version
    heads               Show current available heads in the script directory
    merge               Merge two revisions together. Creates a new migration
                        file
    migrate             Alias for 'revision --autogenerate'
    stamp               'stamp' the revision table with the given revision;
                        don't run any migrations
    show                Show the revision denoted by the given symbol.
    current             Display the current revision for each database.
    edit                Edit current revision.
    init                Creates a new migration repository
    downgrade           Revert to a previous version
    branches            Show current branch points
    history             List changeset scripts in chronological order.
    revision            Create a new revision file.