# Using managed GKE clusters¶

## Initial setup¶

### Install the GKE plugin¶

To use Google Kubernetes Engine (GKE), begin by installing the “GKE clusters” plugin from the Plugins store in Dataiku DSS. For more details, see the instructions for installing plugins.

### Prepare your local gcloud, docker, and kubectl commands¶

Follow the Google Cloud Platform (GCP) documentation to ensure the following on your local machine (where DSS is installed):

• The gcloud command has the appropriate permissions and scopes to:

• push to the Google Container Registry (GCR) service.
• have full control on the GKE service.
• The kubectl command is installed.

• The docker command is installed, can build images and push them to GCR. The latter can be enabled by running the gcloud auth configure-docker command.

### Create base images¶

Build the base image by following these instructions.

### Create a new execution configuration¶

Go to Administration > Settings > Containerized execution, and add a new execution configuration of type “Kubernetes.”

• In GCP, there is only a single shared image repository URL, gcr.io. Access control is based on image names; therefore, the repository URL to use is gcr.io/your-gcp-project-name.
• Finish by clicking Push base images.

## Cluster configuration¶

### Connection¶

The connection is where you define how to connect to GCP. This can be done either inline in each cluster (not recommended), or as a preset in the “GKE connection” plugin settings (recommended).

### Network settings¶

The “network” field refers to the Virtual Private Cloud (VPC) where the cluster will be deployed. The “sub-network” field defines the IP space within that VPC where the pod IPs will be allocated. If left blank, those fields will use default network settings, the details of which are explained in the GCP documentation.

### Cluster nodes¶

This is where you define the number and type of nodes that you want in your cluster. You can define the properties of a node pool either inline (not recommended) or as a preset in the “Node pools” plugin settings (recommended). You have the possibility to define multiple node pools, each with its own properties.

## Using GPUs¶

GCP provides GPU-enabled instances with NVIDIA GPUs. Using GPUs for containerized execution requires the following steps.

### Build a CUDA-enabled base image¶

The base image that is built by default (see Setting up (Kubernetes)) does not have CUDA support and cannot use NVIDIA GPUs. Therefore, you need to build a CUDA-enabled base image.

Thereafter, create a new container configuration dedicated to running GPU workloads. If you specified a tag for the base image, report it in the “Base image tag” field.

### Enable GPU support on the cluster¶

When you create your cluster using the GKE plugin, be sure to enable the “With GPU” option in the node pool settings. Follow the GCP documentation on GPUs to select the GPU type.

At cluster creation, the plugin will run the NVIDIA driver “DaemonSet” installation procedure, which needs several minutes to complete.

• In the “Custom limits” section, add a new entry with key nvidia.com/gpu and value 1 (to request 1 GPU).