H2O Flow

H2O Flow is a tool for machine learning workflows, typically running as part of the H2O.ai suite, and Akash offers a decentralized cloud environment where you can host this application.

Step 1: Write the deploy.yaml File for H2O Flow

1. Define Basic Configuration Create a new file named deploy.yaml. Inside this file, include the necessary fields that Akash requires, such as version, services, profiles, and deployments. Here’s a sample structure:

version: "2.0"

services:
  h2o-flow:
    image: "h2oai/h2o-open-source-k8s:latest"
    args: ["java", "-jar", "/h2o.jar", "-flow_dir", "/h2oflow"]
    expose:
      - port: 54321
        as: 80
        to:
          - global: true

profiles:
  compute:
    h2o-flow:
      resources:
        cpu:
          units: 1
        memory:
          size: 2Gi
        storage:
          size: 5Gi

  placement:
    akash:
      attributes:
        region: "us-west"

deployments:
  h2o-deployment:
    h2o-flow:
      profile: h2o-flow
      count: 1

Here’s a breakdown of what each section is doing:

• Services: Defines the H2O Flow service, specifying the Docker image (h2oai/h2o-open-source-k8s:latest). This image includes H2O Flow in the /h2o.jar file.

• Profiles: Sets the required resources like CPU, memory, and storage.

• Deployments: Specifies how many instances of the service will be created (here, just one).

2. Save the deploy.yaml file in your working directory.

Step 2: Install Akash CLI

If you haven’t already installed the Akash CLI, install it by following these instructions:

• Download the Akash CLI from their GitHub Releases page.
• Install the CLI by following the instructions for your operating system.

Step 3: Initialize and Fund Your Wallet

1. Create a Wallet if you don’t already have one:

akash keys add <your-wallet-name>

2. Fund Your Wallet: Get some Akash tokens (AKT) by either purchasing them or using the faucet if available.

3. Check Your Balance:

akash query bank balances <your-wallet-address>

Step 4: Deploy on Akash

1. Create a Certificate:

akash tx cert create client --from <your-wallet-name> --chain-id akashnet-2 --fees 5000uakt

2. Create a Deployment: Run the following command to start the deployment with your deploy.yaml file:

akash tx deployment create deploy.yaml --from <your-wallet-name> --chain-id akashnet-2 --fees 5000uakt

3. View the Deployment Status: Once deployed, you can check the status by running:

akash query deployment list --owner <your-wallet-address>

4. Get the Service Endpoint: Once the deployment is live, you will get an external IP or domain through which you can access H2O Flow. Use this to connect to the H2O Flow service.

Step 5: Connect to H2O Flow

1. Open a browser.

2. Navigate to http://<your-service-endpoint>.

3. You should see the H2O Flow interface.

This should give you a functional deployment of H2O Flow on Akash!