#!/bin/bash

set -e

# OVERVIEW
# This script installs a custom, persistent installation of conda on the Notebook Instance's EBS volume, and ensures
# that these custom environments are available as kernels in Jupyter.
# 
# The on-start script uses the custom conda environment created in the on-create script and uses the ipykernel package
# to add that as a kernel in Jupyter.
#
# For another example, see:
# https://docs.aws.amazon.com/sagemaker/latest/dg/nbi-add-external.html#nbi-isolated-environment

sudo -u ec2-user -i <<'EOF'
unset SUDO_UID
WORKING_DIR=/home/ec2-user/SageMaker/custom-miniconda/
source "$WORKING_DIR/miniconda/bin/activate"
for env in $WORKING_DIR/miniconda/envs/*; do
    BASENAME=$(basename "$env")
    source activate "$BASENAME"
    python -m ipykernel install --user --name "$BASENAME" --display-name "Custom ($BASENAME)"
done
# Optionally, uncomment these lines to disable SageMaker-provided Conda functionality.
# echo "c.EnvironmentKernelSpecManager.use_conda_directly = False" >> /home/ec2-user/.jupyter/jupyter_notebook_config.py
# rm /home/ec2-user/.condarc
EOF

echo "Restarting the Jupyter server.."
restart jupyter-server

#!/bin/bash

set -e

# OVERVIEW
# This script installs a custom, persistent installation of conda on the Notebook Instance's EBS volume, and ensures
# that these custom environments are available as kernels in Jupyter.
# 
# The on-create script downloads and installs a custom conda installation to the EBS volume via Miniconda. Any relevant
# packages can be installed here.
#   1. ipykernel is installed to ensure that the custom environment can be used as a Jupyter kernel   
#   2. Ensure the Notebook Instance has internet connectivity to download the Miniconda installer


sudo -u ec2-user -i <<'EOF'
unset SUDO_UID
# Install a separate conda installation via Miniconda
WORKING_DIR=/home/ec2-user/SageMaker/custom-miniconda
mkdir -p "$WORKING_DIR"
wget https://repo.anaconda.com/miniconda/Miniconda3-4.6.14-Linux-x86_64.sh -O "$WORKING_DIR/miniconda.sh"
bash "$WORKING_DIR/miniconda.sh" -b -u -p "$WORKING_DIR/miniconda" 
rm -rf "$WORKING_DIR/miniconda.sh"
# Create a custom conda environment
source "$WORKING_DIR/miniconda/bin/activate"
KERNEL_NAME="custom_python"
PYTHON="3.6"
conda create --yes --name "$KERNEL_NAME" python="$PYTHON"
conda activate "$KERNEL_NAME"
pip install --quiet ipykernel
# Customize these lines as necessary to install the required packages
conda install --yes numpy
pip install --quiet boto3
EOF