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Kubernetes

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Requirements​

  • A Kuberentes Cluster with a recent version (e.g. >=1.23).
  • The cluster needs to be able to provision PersistentVolumes through PersistentVolumeClaims. No special file systems are required. Any default file system capable of ReadWriteOnce access mode is sufficient.
  • Helm (only v3 is compatible from Helm version "v15.0.0")

Weaviate Helm chart

To obtain and install the Weaviate chart on your Kubernetes cluster, take the following steps:

Verify tool setup and cluster access​

# Check if helm is installed
$ helm version
# Make sure `kubectl` is configured correctly and you can access the cluster. 
# For example, try listing the pods in the currently configured namespace.
$ kubectl get pods

Obtain the Helm Chart​

Get the Helm chart and values.yml configuration file.

# Set the Weaviate chart version
export CHART_VERSION="v15.0.0"
# Download the Weaviate Helm chart
wget https://github.com/weaviate/weaviate-helm/releases/download/$CHART_VERSION/weaviate.tgz
# Download an example values.yml (with the default configuration)
wget https://raw.githubusercontent.com/weaviate/weaviate-helm/$CHART_VERSION/weaviate/values.yaml

Adjust the configuration in the values.yml (Optional)​

Note: You can skip this step and run with all default values. In any case, make sure that you set the correct Weaviate version. This may either be through explicitly setting it as part of the values.yaml or through overwriting the default as outlined in the deploy step below.

In the values.yaml file you can tweak the configuration to align it with your setup. The yaml file is extensively documented to help you align the configuration with your setup.

Out of the box, the configuration file is setup for:

  • 1 Weaviate replica. (This cannot be changed at the moment, see below)
  • The text2vec-contextionary module is enabled and running with 1 replica. (This can be adjusted based on the expected load).
  • Other modules, such as text2vec-transformers, qna-transformers or img2vec-neural are disabled by default. They can be enabled by setting the respective enabled flag to true.

See the resource requests and limits in the example values.yml. You can adjust them based on your expected load and the resources available on the cluster.

Deploy (install the Helm chart)​

You can deploy the helm charts as follows:

# Create a Weaviate namespace
$ kubectl create namespace weaviate

# set the desired Weaviate version
export WEAVIATE_VERSION="1.17.2"

# Deploy
$ helm upgrade \
  "weaviate" \
  weaviate.tgz \
  --install \
  --namespace "weaviate" \
  --values ./values.yaml \
  --set "image.tag=$WEAVIATE_VERSION"

The above assumes that you have permissions to create a new namespace. If you have only namespace-level permissions, you can skip creating a new namespace and adjust the namespace argument on helm upgrade according to the name of your pre-configured namespace.

Updating the installation after the initial deployment​

The above command (helm upgrade...) is idempotent, you can run it again, for example after adjusting your desired configuration.

Additional Configuration Help

More Resources​

If you can't find the answer to your question here, please look at the:

  1. Frequently Asked Questions. Or,
  2. Knowledge base of old issues. Or,
  3. For questions: Stackoverflow. Or,
  4. For issues: Github. Or,
  5. Ask your question in the Slack channel: Slack.