docs/content/tutorials/compute-to-data.md

title	description
Set Up a Compute-to-Data Environment

Requirements

First, create a folder with the following structure:

ocean/
  barge/
  operator-service/
  operator-engine/

Then you need the following parts:

• working Barge. For this setup, we will asume the Barge is installed in /ocean/barge/
• a working Kubernetes (K8s) cluster (Minikube is a good start)
• a working kubectl connected to the K8s cluster
• one folder (/ocean/operator-service/), in which we will download the following:
  • postgres-configmap.yaml
  • postgres-storage.yaml
  • postgres-deployment.yaml
  • postgres-service.yaml
  • deployment.yaml
  • role_binding.yaml
  • service_account.yaml
• one folder (/ocean/operator-engine/), in which we will download the following:
  • sa.yaml
  • binding.yaml
  • operator.yaml
  • computejob-crd.yaml
  • workflow-crd.yaml

Customize your Operator Service deployment

The following resources need attention:

Resource	Variable	Description
postgres-configmap.yaml		Contains secrets for the PostgreSQL deployment.
deployment.yaml	ALGO_POD_TIMEOUT	Allowed time for a algorithm to run. If it exceeded this value (in minutes), it's going to get killed.

Customize your Operator Engine deployment

The following resources need attention:

Resource	Variable	Description
operator.yaml	ACCOUNT_JSON, ACCOUNT_PASSWORD	Defines the account that is going to be used when publishing results back to OceanProtocol.
	AWS_ACCESS_KEY_ID, AWS_ACCESS_KEY_ID, AWS_REGION	S3 credentials for the logs and output buckets.
	AWS_BUCKET_OUTPUT	Bucket that will hold the output data (algorithm logs & algorithm output).
	AWS_BUCKET_ADMINLOGS	Bucket that will hold the admin logs (logs from pod-configure & pod-publish).
	STORAGE_CLASS	Storage class to use (see next section).

Storage class

For minikube, you can use 'standard' class.

For AWS , please make sure that your class allocates volumes in the same region and zone in which you are running your pods.

We created our own 'standard' class in AWS:

kubectl get storageclass standard -o yaml

allowedTopologies:
- matchLabelExpressions:
    - key: failure-domain.beta.kubernetes.io/zone
          values:
          - us-east-1a
apiVersion: storage.k8s.io/v1
kind: StorageClass
parameters:
    fsType: ext4
    type: gp2
provisioner: kubernetes.io/aws-ebs
reclaimPolicy: Delete
volumeBindingMode: Immediate

Or we can use this for minikube:

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: standard
provisioner: docker.io/hostpath
reclaimPolicy: Retain

For more information, please visit https://kubernetes.io/docs/concepts/storage/storage-classes/

Create namespaces

kubectl create ns ocean-operator
kubectl create ns ocean-compute

Deploy Operator Service

kubectl config set-context --current --namespace ocean-operator
kubectl create -f /ocean/operator-service/postgres-configmap.yaml
kubectl create -f /ocean/operator-service/postgres-storage.yaml
kubectl create -f /ocean/operator-service/postgres-deployment.yaml
kubectl create -f /ocean/operator-service/postgresql-service.yaml
kubectl apply -f /ocean/operator-service/deployment.yaml
kubectl apply -f /ocean/operator-service/role_binding.yaml
kubectl apply -f /ocean/operator-service/service_account.yaml

Deploy Operator Engine

kubectl config set-context --current --namespace ocean-compute
kubectl apply -f /ocean/operator-engine/sa.yml
kubectl apply -f /ocean/operator-engine/binding.yml
kubectl apply -f /ocean/operator-engine/operator.yml
kubectl apply -f /ocean/operator-engine/computejob-crd.yaml
kubectl apply -f /ocean/operator-engine/workflow-crd.yaml
kubectl create -f /ocean/operator-service/postgres-configmap.yaml

Expose Operator Service

kubectl expose deployment operator-api --namespace=ocean-operator --port=8050

Run a port forward or create your ingress service (not covered here):

kubectl -n ocean-operator port-forward svc/operator-api 8050

Initialize database

If your cluster is running on example.com:

curl -X POST "http://example.com:8050/api/v1/operator/pgsqlinit" -H  "accept: application/json"

Update Brizo

Update Brizo by adding or updating the OPERATOR_SERVICE_URL env in /ocean/barge/compose-files/brizo.yaml

OPERATOR_SERVICE_URL: http://example.com:8050/

Restart Barge with updated Brizo configuration