Caravel

As of version 0.10.0 this image is based on Alpine Linux and installed with Python 3

Demo

Run the caravel demo by entering this command into your console:

docker run --name caravel -d -p 8088:8088 amancevice/caravel
docker exec -it caravel demo

You will be prompted to set up an admin user.

When finished navigate to http://localhost:8088/ to see the demo.

Versions

This repo is tagged in parallel with caravel. Pulling amancevice/caravel:0.10.0 will fetch the image of this repository running caravel version 0.10.0. As it is an automated build, commits to the master branch of this repository trigger a re-build of the latest tag, while tagging master triggers a versioned build. It is possible that the latest tag includes new deployment-specific features but will usually be in sync with the latest semantic version.

Database Setup

Determine where you will store Caravel's database; choose SQLite, MySQL, PostgreSQL, or Redshift. Use the ENV variable SQLALCHEMY_DATABASE_URI to point caravel to the correct database. Be sure to set a SECRET_KEY when creating the container.

SQLite

If Caravel's database is created using SQLite the db file should be mounted from the host machine. In this example we will store a SQLite DB on our host machine in ~/caravel/caravel.db and mount the directory to /home/caravel/db in the container.

docker run --detach --name caravel \
    --env SECRET_KEY="mySUPERsecretKEY" \
    --env SQLALCHEMY_DATABASE_URI="sqlite:////home/caravel/db/caravel.db" \
    --publish 8088:8088 \
    --volume ~/caravel:/home/caravel/db \
    amancevice/caravel

MySQL

docker run --detach --name caravel \
    --env SECRET_KEY="mySUPERsecretKEY" \
    --env SQLALCHEMY_DATABASE_URI="mysql://user:pass@host:port/db" \
    --publish 8088:8088 \
    amancevice/caravel

PostgreSQL

docker run --detach --name caravel \
    --env SECRET_KEY="mySUPERsecretKEY" \
    --env SQLALCHEMY_DATABASE_URI="postgresql://user:pass@host:port/db" \
    --publish 8088:8088 \
    amancevice/caravel

Redshift

docker run --detach --name caravel \
    --env SECRET_KEY="mySUPERsecretKEY" \
    --env SQLALCHEMY_DATABASE_URI="redshift+psycopg2://username@host.amazonaws.com:5439/db" \
    --publish 8088:8088 \
    amancevice/caravel

Database Initialization

After starting the Caravel server, initialize the database with an admin user and Caravel tables using the caravel-init helper script:

docker run --detach --name caravel ... amancevice/caravel
docker exec -it caravel caravel-init

Upgrading

Upgrading to a newer version of caravel can be accomplished by re-pulling amancevice/caravelat a specified caravel version or latest (see above for more on this). Remove the old container and re-deploy, making sure to use the correct environmental configuration. Finally, ensure the caravel database is migrated up to the head:

# Pull desired version
docker pull amancevice/caravel

# Remove the current container
docker rm -f caravel-old

# Deploy a new container ...
docker run --detach --name caravel-new ...

# Upgrade the DB
docker exec caravel-new db upgrade

Additional Configuration

A custom configuration can be accomplished through mounting a Caravel config to ~caravel/caravel_config.py in the container or by setting ENV variables:

ROW_LIMIT
WEBSERVER_THREADS
SECRET_KEY
SQLALCHEMY_DATABASE_URI
CSRF_ENABLED
DEBUG

Additional environmental variables prefixed with CARAVEL_ will also be passed to the caravel configuration (without the CARAVEL_ prefix). See the caravel configuration file for a list of available configuration keys.

For example, the following command will deploy caravel with the LOG_LEVEL variable set in the caravel configuration:

docker run --detach --name caravel \
    --env CARAVEL_LOG_LEVEL="INFO" \
    --publish 8088:8088 \
    amancevice/caravel

fwahlqvist/caravel