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Spawns JupyterHub single user servers in Docker containers running in AWS Fargate

Project description

fargatespawner

Spawns JupyterHub single user notebook servers in Docker containers running in AWS Fargate

Installation

pip install fargatespawner

Configuration

To configure JupyterHub to use FargateSpawner, you can add the following to your jupyterhub_config.py.

from fargatespawner import FargateSpawner
c.JupyterHub.spawner_class = FargateSpawner

You must also set the following settings on c.FargateSpawner in your jupyterhub_config.py. None of them are optional.

Setting Description Example
aws_region The AWS region in which the tasks are launched. 'eu-west-1'
aws_ecs_host The hostname of the AWS ECS API. Typically, this is of the form ecs.<aws-region>.amazonaws.com. 'ecs.eu-west-1.amazonaws.com'
task_role_arn The role the notebook tasks can assume. For example, in order for them to make requests to AWS, such as to use Jupyter S3 with role-based authentication. 'arn:aws:iam::123456789012:role/notebook-task'
task_cluster_name The name of the ECS cluster in which the tasks are launched. 'jupyerhub-notebooks'
task_container_name The name of the container in the task definition. 'jupyerhub-notebook'
task_definition_arn The family and revision (family:revision) or full ARN of the task definition that runs the notebooks. Typically, this task definition would specify a docker image that builds on one of those from https://github.com/jupyter/docker-stacks. 'jupyterhub-notebook:7'
task_security_groups The security group(s) associated with the Fargate tasks. These must allow communication to and from the hub/proxy. More information, such as the ports used, is at https://jupyterhub.readthedocs.io/en/stable/getting-started/networking-basics.html. ['sg-00026fc201a4e374b']
task_subnets The subnets associated with the Fargate tasks. ['subnet-01fc5f15ac710c012'] }
notebook_port The port the notebook servers listen on. 8888
notebook_scheme The scheme used by the hub and proxy to connect to the notebook servers. At the time of writing 'https' will not work out of the box. However, users do not connect to the the notebook server directly, and does not, typically, allow incoming connections from the public internet. Instead, users connect to the proxy, which can be configured to listen on HTTPS independently of this setting. There is more information on setting up HTTPS for connections to the proxy at https://jupyterhub.readthedocs.io/en/stable/getting-started/security-basics.html. 'http'
notebook_args Additional arguments to be passed to jupyterhub-singleuser that starts each notebook server. This can be the empty list. ['--config=notebook_config.py']

You must also, either, authenticate using a secret key, in which case you must have the following configuration

from fargatespawner import FargateSpawnerSecretAccessKeyAuthentication
c.FargateSpawner.authentication_class = FargateSpawnerSecretAccessKeyAuthentication

and the following settings on c.FargateSpawnerSecretAccessKeyAuthentication

Setting Description Example
aws_access_key_id The ID of the AWS access key used to sign the requests to the AWS ECS API. ommitted
aws_secret_access_key The secret part of the AWS access key used to sign the requests to the AWS ECS API . ommitted

or authenticate using a role in an ECS container, in which case you must have the following configuration

from jupters3 import FargateSpawnerECSRoleAuthentication
c.FargateSpawner.authentication_class = FargateSpawnerECSRoleAuthentication

where FargateSpawnerECSRoleAuthentication does not have configurable options.

Run-time dependencies

The spawner is deliberately written to not have any additional dependencies, beyond those that are required for JupyterHub.

Approximate minimum permissions

In order for the user to be able to start, monitor, and stop the tasks, they should have the below permissions.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "",
      "Effect": "Allow",
      "Action": "ecs:RunTask",
      "Resource": "arn:aws:ecs:<aws_region>:<aws_account_id>:task-definition/<task_family>:*",
      "Condition": {
        "ArnEquals": {
          "ecs:cluster": "arn:aws:ecs:<aws_region>:<aws_account_id>:cluster/<cluster_name>"
        }
      }
    },
    {
      "Sid": "",
      "Effect": "Allow",
      "Action": "ecs:StopTask",
      "Resource": "arn:aws:ecs:<aws_region>:<aws_account_id>:task/*",
      "Condition": {
        "ArnEquals": {
          "ecs:cluster": "arn:aws:ecs:<aws_region>:<aws_account_id>:cluster/<cluster_name>"
        }
      }
    },
    {
      "Sid": "",
      "Effect": "Allow",
      "Action": "ecs:DescribeTasks",
      "Resource": "arn:aws:ecs:<aws_region>:<aws_account_id>:task/*",
      "Condition": {
        "ArnEquals": {
          "ecs:cluster": "arn:aws:ecs:<aws_region>:<aws_account_id>:cluster/<cluster_name>"
        }
      }
    },
    {
      "Sid": "",
      "Effect": "Allow",
      "Action": "iam:PassRole",
      "Resource": [
        "arn:aws:iam::<aws_account_id>:role/<task-execution-role>",
        "arn:aws:iam::<aws_account_id>:role/<task-role>"
      ]
    }
  ]
}

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