Setting up Jupyter Notebook environment using Kubeflow

This guide explains the steps to configure a Jupyter Notebook environment using the Kubeflow service on KakaoCloud's Kubernetes platform.

Basic information

• Estimated time: 30 minutes
• User environment
  • Recommended OS: MacOS, Ubuntu
  • Region: kr-central-2
• Prerequisites:
  • VM access key pair
  • Access key

Before you start

Using KakaoCloud's Kubernetes Engine and Kubeflow, you can establish an efficient foundation for an MLOps environment. In this document, you'll learn how to perform data analysis and model training using Jupyter Notebook, and how to optimize machine learning workflows using various features of Kubeflow.

About this scenario

In this scenario, we guide you through creating Kubeflow on the KakaoCloud console, accessing the dashboard, and creating a Jupyter Notebook instance. The main topics covered in this scenario are:

• Setting up a Kubernetes cluster and file storage
• Performing data analysis and model training by creating a Jupyter Notebook

Before you start

As a prerequisite for setting up the Kubeflow environment, create and configure a Kubernetes cluster and file storage.

1. Create Kubernetes cluster

Configure a basic Kubernetes cluster for the Kubeflow environment. This cluster serves as the foundation for deploying various Kubeflow components.

1. In the KakaoCloud Console > Container Pack > Kubernetes Engine, click [Create cluster].

   Cluster settings

   Item	Description
   Cluster name	kc-handson
   Kubernetes version	1.28
   Cluster network settings	Select a network with an IP range that supports external communication from the created VPC and subnet

   info

   If the cluster's network is a private subnet, nodes in the private subnet cannot communicate over the internet. To enable internet communication for external CRs, NAT communication is required.

   You can use a NAT Instance for NAT communication. For more details, refer to Appendix. NAT instance.

   Node pool settings

   Name	Count	Node pool specification
   pool-ingress	1	- Node pool type: Virtual Machine - Instance type: m2a.large - Volume type/size: 50GB - Node count: 1 - Autoscale: Disabled
   pool-worker	6	- Node pool type: Virtual Machine - Instance type: m2a.xlarge - Volume type/size: 100GB - Node count: 6 - Autoscale: Disabled
   pool-gpu	1	- Node pool type: GPU - Instance type: p2i.6xlarge - Volume type/size: 100GB - Autoscale: Disabled

2. Ensure that the status of the created node pool is Running.

3. Follow the steps in Kubectl control setup to configure the kubectl file for the cluster.

2. Create file storage

Create file storage required for data management and storage in Kubeflow. This storage will be used as a Persistent Volume for the notebook instance, ensuring safe storage of data and models. Configure the file storage instance in the same network and subnet as the selected cluster.

1. In the KakaoCloud Console > Beyond Storage Service > File Storage, click [Create instance].

   Item	Description
   Instance name	kc-handson-fs
   Volume size	1TB
   Network settings	Same as the Kubernetes cluster
   Subnet settings	Same as the Kubernetes cluster
   Access control settings	Allow access from all private IPs within the configured network
   Mount information	handson

2. Ensure that the status of the created instance changes to Active.

Getting started

The main steps for configuring the Jupyter Notebook environment are as follows.

Step 1. Create Kubeflow

Deploy and configure Kubeflow on the prepared Kubernetes cluster. This process ensures that you can utilize Kubeflow's various features through the initial configuration.

1. In the KakaoCloud Console > AI Service > Kubeflow menu, click [Create Kubeflow]. Refer to the configuration values below to create Kubeflow.

   Kubeflow settings

   Item	Description
   Kubeflow name	kc-handson
   Kubeflow version	1.8
   Kubeflow service type	Essential+HPT+ServingAPI

   Cluster settings

   Item	Description
   Cluster connection	kc-handson
   Ingress node pool	pool-ingress
   Worker node pool	pool-worker
   CPU node pool	pool-worker
   GPU node pool	pool-gpu
   GPU MIG	1g.10gb - 7 count
   Default file storage	kc-handson-fs

   
   

   Authentication information for users and workloads

   Category	Item	Description
   Object storage settings	Object storage type	Object Storage or MinIO
   Kubeflow owner settings	Owner email account	${ADMIN_EMAIL} (example@kakaocloud.com)
   	Namespace name	kubeflow-tutorial
   	Namespace file storage	kc-handson-fs
   DB settings	DB type	Kubeflow Internal DB
   	Port	3306
   	Password	${DB_PASSWORD}
   	Confirm password	${DB_PASSWORD}
   Domain connection (optional)		Enter a valid domain format

2. Ensure that the created Kubeflow status changes to Active.

Step 2. Access the dashboard

To access the deployed Kubeflow environment, connect to the dashboard. From here, you can manage various Kubeflow resources and configure the Jupyter Notebook environment.

There are two main methods to access the Kubeflow dashboard: via Load Balancer Public IP or using kubectl port forwarding.

Using Load Balancer Public IP

1. In the KakaoCloud Console, go to Load Balancing > Load Balancer.
   

2. Find the load balancer named kube_service_{project_id}_{IKE cluster_name}_ingress-nginx_ingress-nginx-controller created for Kubeflow's Ingress and check its Public IP. If there is no Public IP, assign a new one from the options menu.

   

3. Open your browser and access the Public IP of the load balancer on port 80.

   open http://{LB_PUBLIC_IP}

Using Kubectl port forwarding

You can access the Kubeflow gateway or Kubeflow Istio gateway by establishing a port-forwarding connection via the kubectl CLI.

1. Use the kubectl command to connect to the Kubernetes cluster where Kubeflow is installed.

2. Forward a specific port (e.g., 8080) from your local system to the Kubeflow dashboard port.

   kubectl port-forward svc/istio-ingressgateway -n istio-system 8080:80

3. Open your browser and access the Kubeflow dashboard by navigating to the local host on port 8080.

   open http://localhost:8080

4. After accessing the dashboard, log in using the owner email account provided during the Kubeflow creation step and the initial password sent to the owner’s email.

Step 3. Create Jupyter Notebook

Through the dashboard, users can create a Jupyter Notebook instance. In this step, you will select the specifications for the notebook and configure the necessary settings.

1. In the Kubeflow dashboard, click on the Notebooks tab on the left side.

   

2. Navigate to the Notebooks page and click the [+ New Notebook] button at the top right. Refer to the information below to create a new notebook.

GPU-based Notebook

1. For a GPU-based notebook, refer to the following configuration details:

   Item	Category	Description
   Name	Name	Used to identify the notebook instance in the Kubeflow dashboard
   	Namespace	Kubernetes namespace where the notebook instance will be created
   Docker Image	Image	Specify the Docker image
   CPU / RAM	Minimum CPU	The number of CPU cores, specifying the amount of CPU resources the notebook instance will use
   	Minimum Memory Gi	Unit of memory resources (GiB), specifying the amount of memory resources the notebook instance will use
   GPUs	Number of GPUs	GPU resources to be used by the notebook instance
   Affinity / Tolerations	Affinity Config	Select the CPU node pool where the notebook will be created - Specify the node on which the notebook instance will run
   	Tolerations Group	Allow specific node taint settings

2. Enter the information for the notebook you want to create. Refer to the example values below.

   Item	Description
   Name	handson
   Image	kc-kubeflow/jupyter-pyspark-pytorch:v1.8.0.py311.1a
   Minimum CPU	2
   Minimum Memory Gi	12
   Number of GPUs	4
   GPU Vendor	NVIDIA MIG - 1g.10gb
   Affinity Config	pool-gpu

CPU-based Notebook

1. Refer to the following information to create a CPU-based notebook.

   Item	Field	Description
   Name	Name	Used to identify the notebook instance in the Kubeflow dashboard
   	Namespace	The Kubernetes namespace where the notebook instance will be created
   Docker Image	Image	mlops-pipelines/jupyter-pyspark-pytorch:v1.0.1.py36 - Specify the Docker image
   CPU / RAM	Requested CPUs	2 - Number of CPU cores allocated to the notebook instance
   	Requested memory in Gi	8 - Memory allocation for the notebook instance in GiB
   GPUs	Number of GPUs	None - No GPU resources allocated
   Affinity / Tolerations	Affinity Config	Select the CPU node pool where the notebook will be created
   	Tolerations Group	None - Set tolerations for specific node taints

2. Enter the information for the notebook you want to create. Refer to the example values below.

   Item	Description
   Name	handson
   Image	kc-kubeflow/jupyter-pyspark-pytorch:v1.8.0.py311.1a
   Minimum CPU	2
   Minimum Memory Gi	12
   Number of GPUs	None
   Affinity Config	pool-worker

3. Click the [LAUNCH] button to create the notebook.

Step 4. Access Jupyter Notebook

Once the Jupyter Notebook instance is created, you can access it to work on real machine learning projects.

1. Click the [CONNECT] button next to the created notebook instance to access it.

   

2. Select the Python3 kernel from the Notebook.

   

3. Enter the following example code. After running the code, verify the output message to confirm the results.

   import torch
   
   def check_gpu_available():
      if torch.cuda.is_available():
         print("GPU is available on this system.")
      else:
         print("GPU is not available on this system.")
   
   check_gpu_available()
   Basic information

   Unlike this tutorial, when using a Single GPU instance, you need to set the environment variable CUDA_VISIBLE_DEVICES to 0.

   import torch
   import os
   
   def set_cuda_devices():
      os.environ["CUDA_VISIBLE_DEVICES"] = "0"
   
   def check_gpu_available():
      if torch.cuda.is_available():
         print("GPU is available on the current system.")
      else:
         print("GPU is not available on the current system.")
   
   set_cuda_devices()
   check_gpu_available()

4. For notebooks using GPUs, access the terminal within the Notebook and run the nvidia-smi command to check the NVIDIA devices.