Resize the resources available to your JupyterHub#

As you are using your JupyterHub, you may need to increase or decrease the amount of resources allocated to your TLJH install. The kinds of resources that can be allocated, as well as the process to do so, will depend on the provider / interface for your VM. We recommend consulting the installation page for your provider for more information. This page covers the steps your should take on your JupyterHub after you’ve reallocated resources on the cloud provider of your choice.

Currently there are instructions to resize your resources on the following providers:

Once resources have been reallocated, you must tell TLJH to make use of these resources, and verify that the resources have become available.

Verifying a Resize#

  1. Once you have resized your server, tell the JupyterHub to make use of these new resources. To accomplish this, follow the instructions in Configuring TLJH with tljh-config to set new memory or CPU limits and reload the hub. This can be completed using the terminal in the JupyterHub (or via SSH-ing into your VM and using this terminal).

  2. TLJH configuration options can be verified by viewing the tljh-config output.

    sudo tljh-config show

    Double-check that your changes are reflected in the output.

  3. To verify changes to memory, confirm that it worked by starting a new server (if you had one previously running, click “Control Panel -> Stop My Server” to shut down your active server first), opening a notebook, and checking the value of the jupyter-resource-usage extension in the upper-right.

    jupyter-resource-usage demonstration
  4. To verify changes to CPU, use the nproc from a terminal. This command displays the number of available cores, and should be equal to the number of cores you selected in your provider’s interface.

    nproc --all
  5. To verify currently-available disk space, use the df command in a terminal. This shows how much disk space is available. The -hT argument allows us to have this printed in a human readable format, and condenses the output to show one storage volume. Note that currently you cannot change the disk space on a per-user basis.

    df -hT /home