setting up dedicated notebook runner inside docker containers on VM @ CHPC

[gijzelaerr]

about

so actually we can set a webserver that runs the course notebooks in docker containers.

Doing this now on 196.24.241.83, created an alias for radioastro.pythonic.nl and interferometery.pythonic.nl.

create VM

https://cloud.chpc.ac.za

This can be automated:

https://github.com/ratt-ru/systems/wiki/openstack

install docker

https://docs.docker.com/linux/step_one/

$ sudo apt-get update
$ sudo apt-get -y install curl git
$ curl -fsSL https://get.docker.com/ | sh

https://github.com/jupyter/tmpnb

Install tmbnb

export TOKEN=$( head -c 30 /dev/urandom | xxd -p )
export CONTAINER=radioastro/course
export PORT=8000

docker run --net=host -d -e CONFIGPROXY_AUTH_TOKEN=$(TOKEN) \
    --name=proxy jupyter/configurable-http-proxy \
    --default-target http://127.0.0.1:9999 --port=$(PORT)
docker run --net=host -d -e CONFIGPROXY_AUTH_TOKEN=$TOKEN \
    --name=tmpnb -v /var/run/docker.sock:/docker.sock \
    jupyter/tmpnb python orchestrate.py --image='$(CONTAINER)' \
    --command="jupyter notebook --NotebookApp.base_url={base_path} \
    --ip=0.0.0.0 --port {port}"

Redirect

due to proxy container design we can't run it on port 80. 8000 is annoyingly blocked by SKA, but we redirect traffic using uptables:

sudo iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 8000