This project is deprecated. Please see ✨ stencila/sparkla
which provides compute sessions that are faster to start, more secure, and have finer grained control, and real-time user notifications, for resource usage.
In Stencila, execution Contexts
are provided by a Host
(if you are familiar with Jupyter, then Stencila Contexts
are like Jupyter kernels and a Host
is like a kernel gateway). In addition to providing Contexts
, Hosts
can also provide execution Environments
(which have one or more Contexts
with in them e.g. PythonContext
, RContext
) plus language specific packages (e.g. pandas
, ggplot2
). There is a Host
HTTP API (currently in draft) available here.
This package, stencila/cloud
, implements the Stencila Host
API for running alternative execution Environments
as Docker containers within a Kubernetes cluster. It is intended as a way of providing users of Stencila with an easy way to render Stencila documents withing alternative execution environments, without having to install packages themselves, or install and run Docker.
An example of a document using a
RContext
, hosted within the stencila/core
execution environment, provided by stencila/cloud
.
See the Dockerfile
for building a container and deploy.yaml
and minikube.yaml
for example Kubernetes deployments.
Quickstart:
git clone https://github.com/stencila/cloud.git
cd cloud
npm install
Most development tasks can be run directly from npm
or via make
recipes.
Task | npm |
make |
---|---|---|
Install dependencies | npm install |
make setup |
Check for lint | npm run lint |
make lint |
Run with Minikube | NODE_ENV='development' npm start |
make run-with-minikube |
Run inside Minikube | make run-inside-minikube |
You can run the sever locally but get it to create new session pods within an Minikube cluster.
Install minikube
and kubectl
. Then start the Minikube cluster,
minikube start
make run-with-minikube
The server will be available on http://localhost:2000 but will create new pods on Minikube. e.g. Create a new session using HTTPie
http PUT :2000/execute environment:='{"id":"alpine"}'
Use minikube dashboard
or kubectl get pods
to confirm that the session pods are getting created.
You can run the server inside Minikube and create new session pods there too.
Deploy stencila/cloud
to the Minikube cluster,
minikube start
make run-inside-minikube
Check the Deployment
is ready (the dashboard can be useful for this too: minikube dashboard
),
kubectl get deployments
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
stencila-cloud-deployment 1 1 1 0 1d
You can then get the URL of the host:
minikube service stencila-cloud-server --url
And check that it responds:
curl $(minikube service stencila-cloud-server --url)
If you're developing the Docker images in the stencila/images
repo you can save time (and bandwidth) by not pushing/pulling images to/from the Docker Hub registry and the Minikube cluster. To do that, configure your local Docker client to use the Docker engine running inside the Minikube cluster:
eval $(minikube docker-env)