H2O | Akash Network - Your Guide to Decentralized Cloud

H2O is an in-memory platform for distributed, scalable machine learning. H2O uses familiar interfaces like R, Python, Scala, Java, JSON and the Flow notebook/web interface, and works seamlessly with big data technologies like Hadoop and Spark.

This guide covers deploying the H2O-3 (the third incarnation of H2O, and the successor to H2O-2) open-source machine learning platform on the Akash network. We’ll use a sample SDL (Stack Definition Language) template and demonstrate deployment through both the Akash CLI and the Akash Console.

Prerequisites

- Akash Network Account: Set up your wallet and fund it with AKT.
- Akash CLI: Installed and configured on your machine.
- Akash Console: Accessible at console.akash.network.
- H2O-3 Docker Image: We'll use the official Docker image for H2O.

Step 1: Sample SDL Template

The following SDL template defines the deployment of H2O-3:

version: "2.0"

services:
  h2o3:
    image: h2oai/h2o-open-source-ai:latest
    env:
      - H2O_DRIVER_PORT=54321
      - H2O_WEB_PORT=54322
    expose:
      - port: 54321
        as: 80
        accept:
          - 0.0.0.0/0
        to:
          - global
      - port: 54322
        as: 443
        accept:
          - 0.0.0.0/0
        to:
          - global

profiles:
  compute:
    h2o3:
      resources:
        cpu:
          units: 1
        memory:
          size: 2Gi
        storage:
          size: 5Gi

  placement:
    akash:
      attributes:
        region: us-west
      pricing:
        h2o3:
          denom: uakt
          amount: 1000

deployment:
  h2o3:
    akash:
      profile: h2o3
      count: 1

Step 2: Deploy Using Akash CLI

Create the Deployment

Save the above SDL template as deploy.yaml. Run the following commands to deploy via the CLI:

akash tx deployment create deploy.yml --from <your_wallet_name> --chain-id <chain_id> --node <node_url> --gas-prices <price> --gas-adjustment <adjustment>

Bid on the Deployment

Fetch the deployment status:

akash query market lease list --owner <your_wallet_address> --dseq <deployment_sequence>

Look for active bids and create a lease with:

akash tx market lease create --owner <your_wallet_address> --dseq <deployment_sequence> --gseq <group_sequence> --oseq <order_sequence> --from <your_wallet_name> --chain-id <chain_id> --node <node_url> --gas-prices <price> --gas-adjustment <adjustment>

Access Your Deployment

Once the lease is active, query the lease status to find the assigned external IP:

akash query market lease status --owner <your_wallet_address> --dseq <deployment_sequence> --gseq <group_sequence> --oseq <order_sequence> --provider <provider_address>

Visit <assigned_IP>:80 for the H2O API and <assigned_IP>:443 for the web UI.

Step 3: Deploy Using Akash Console

Login:
- Visit Akash Console and log in using your Akash wallet.
Create Deployment:
- Navigate to “Deployments” and click “Create Deployment.”
- Upload the deploy.yaml file or paste the SDL directly.
Review and Submit:
- Review the SDL details.
- Submit the deployment and wait for bids.
Select a Bid:
- Once bids are available, select the most suitable provider based on pricing and region.
Access Your Deployment:
- After the lease is created, the provider will assign an external IP. Use this IP to access the H2O services.

Step 4: Testing and Validation

- **API Test**: Access the H2O-3 REST API at `http://<assigned_IP>:80/3/`.

- **Web UI Test**: Visit` https://<assigned_IP>:443/` for the H2O-3 web interface.

- **Monitor Logs**: Use the Akash CLI to view logs for the deployment:

```
akash logs --dseq <deployment_sequence> --gseq <group_sequence> --oseq <order_sequence> --provider <provider_address> --from <your_wallet_name>
```

Additional Notes

Ensure the uakt balance in your wallet can cover deployment and lease costs.
Adjust compute resources in the SDL file if H2O-3 requires more memory or CPU.
Use SSL/TLS if deploying in production to secure the web interface.