问题
I'm trying to setup Apache Superset for Clickhouse. My understanding so far is that I need to install SQLAlchemy for Clickhouse https://github.com/xzkostyan/clickhouse-sqlalchemy
I'm in Ubuntu 16.04 LTS, and using the Docker vanilla version of Clickhouse and of Superset:
- https://store.docker.com/community/images/yandex/clickhouse-server
- https://hub.docker.com/r/amancevice/superset/
without special settings
Any idea how I can bridge the two docker containers with clickhouse-sqlalchemy ? Where and how in that case to install that? (if you have sample command line that I can reuse that will be great)
回答1:
You don't need to bridge them: what you want is a superset server (that you happen to be running via docker) to connect to a clickhouse database (that you also happen to be running via docker).
You also shouldn't need to install SQLAlchemy for Clickhouse: looking at the dockerfile at https://hub.docker.com/r/amancevice/superset/~/dockerfile/ that image has already sqlalchemy-clickhouse installed for you.
Your steps should be as follow:
When you
docker run --detach --name superset [options] amancevice/supersetyou should have your superset instance running at http://localhost:8088/Similarly, when you run
$ docker run -d --name some-clickhouse-server --ulimit nofile=262144:262144 -v /path/to/your/config.xml:/etc/clickhouse-server/config.xml yandex/clickhouse-serveryou should end-up with a clickhouse instance that you can access via SQLAlchemy at something likeclickhouse://default:@some-clickhouse-server/testYou'd need to modify that connection URI based on your config.xml - and you should be able to double-check that it works by connecting to it in your python console.You should then be able to connect superset to your clickhouse db in the same way you'd connect to any other DB: by navigating into Superset's menu > Sources > Databases > [new]
回答2:
Consider using already prepared and configured docker-compose.yml which included in Apache Superset (see https://github.com/apache/superset/blob/master/docker-compose.yml).
To work with Clickhouse should be installed sqlalchemy driver. There are two ones:
- clickhouse-sqlalchemy by xzkostyan
- sqlalchemy-clickhouse by cloudflare.
I recommend using clickhouse-sqlalchemy because it is actually supported and evolute, it supports both available protocols to interact with ClickHouse - HTTP and TCP (native protocol).
Let's connect to one of the public ClickHouse:
- either Demo Yandex CH
docker run -it --rm yandex/clickhouse-client:latest \
--host gh-api.clickhouse.tech --user explorer -s
- or Demo Altinity.Cloud CH
docker run -it --rm yandex/clickhouse-client:latest \
--host github.demo.trial.altinity.cloud -s --user demo --password demo
download source code from repo https://github.com/apache/superset
execute the commands
cd superset-master
docker-compose up
# open the new terminal
docker-compose exec superset bash /app/docker/docker-init.sh
docker-compose exec superset pip install clickhouse-sqlalchemy
docker-compose restart
wait for containers to be started and the web app to be built (see the console output, webpack should finish its work)
browse URL http://localhost:8088 (use credentials admin / admin)
add the database using one of the connection string:
# connection string for Demo Yandex ClickHouse
clickhouse+native://explorer@gh-api.clickhouse.tech/default?secure=true
# connection string for Demo Altinity.Cloud CH
clickhouse+native://demo:demo@github.demo.trial.altinity.cloud/default?secure=true
See also https://stackoverflow.com/a/66006784/303298.
来源：https://stackoverflow.com/questions/47568708/superset-for-clickhouse-in-docker-with-sqlalchemy