Set Up JupyterHub on EC2

Having been using Jupyter Notebook to run my Python code almost exlusively for quite some time, I started to realize that it’d great if, instead of hosting Jupyter on my poor laptop, there is a server that does the hosting. I could for example, kick off a machine learning code before I leave work, and check the results when I get home. Oops I absolutely meant when I get work the next morning; who works extra hours anyway?

Some quick googling told me not only can you host a single-user Jupyter Notebook, there is also an multi-user option called JupyterHub. I immediately decided to build one JupyterHub server on Amazon EC2 for our data science team, which potentially would be great for:

• having a unified data science environment (e.g., Anaconda)
• presenting code and results to colleagues
• accessing S3 (where we store our data) much faster
• prototyping Spark code before submitting it to EMR (with Apache Toree)

What you need

• An Ubuntu EC2 instance; I ended up launching Ubuntu 14.04 because 16.04 didn’t work well with JupyterHub for me.

Installation steps

1. ssh to your newly launched

2. Install Anaconda for Python 2, which will be the main data science environment

   bash wget https://repo.continuum.io/archive/Anaconda2-4.2.0-Linux-x86_64.sh sudo bash Anaconda2-4.2.0-Linux-x86_64.sh When prompted, you might want to change the Anaconda installation prefix to /anaconda2.

3. Install necessary libraries for JupyterHub (Note: JupyterHub runs on Python 3, make sure you differentiate it from the Anaconda Python 2 installed in step 1)

   bash sudo apt-get update sudo apt-get install python3-pip sudo apt-get install npm nodejs-legacy sudo npm install -g configurable-http-proxy sudo pip3 install jupyterhub sudo pip3 install --upgrade notebook

4. Create an SSL key and a certificate for the HTTPS connection to the server.

   bash openssl genrsa 1024 > host.key chmod 400 host.key openssl req -new -x509 -nodes -sha1 -days 365 -key host.key -out host.cert

5. Configure JupyterHub

   bash # generate the config file jupyterhub --generate-config This generates a file named jupyterhub_config.py; edit this file by appending the following to the end:

   c.LocalAuthenticator.create_system_users = True #c.Authenticator.whitelist = set() c.Authenticator.admin_users = {'rex'} c.Spawner.notebook_dir = '~/notebooks' c.JupyterHub.ssl_cert = 'host.cert' c.JupyterHub.ssl_key = 'host.key' c.JupyterHub.port = 443

6. Create new users

   JupyterHub users are essentially Linux users who log in JupyterHub with their Linux credentials. New accounts can be set up by running:

   bash # create a new user; you need to fill in the password and so on sudo adduser rex su rex # cd to the home directory and make a directory for JupyterHub cd mkdir notebooks exit

7. Add Anaconda Python 2 as a Jupyter kernel

   bash # check existing kernels sudo jupyter kernelspec list This should return:

   Available kernels: python3 /usr/local/lib/python3.4/dist-packages/ipykernel/resources

   Add Anaconda Python 2 by

   bash # /anaconda2/bin/python2 is not in the PATH of sudo; use its absolute path sudo /anaconda2/bin/python2 -m ipykernel install

   bash # check existing kernels again sudo jupyter kernelspec list This should now return:

   Available kernels: python3 /usr/local/lib/python3.4/dist-packages/ipykernel/resources python2 /usr/local/share/jupyter/kernels/python2

8. Launch JupyterHub

   bash sudo jupyterhub Enjoy!