Installing On-Premises (on-prem)

OpenCost may be installed on-prem and provides default pricing that may be overridden.

You will need to install Prometheus, create your OpenCost namespace, configure your cluster pricing and cloud costs, and then install OpenCost.

Install Prometheus

Prometheus is a prerequisite for OpenCost installation. OpenCost requires Prometheus for scraping metrics and data storage. For the installation of Prometheus please use the following command:

helm install prometheus --repo https://prometheus-community.github.io/helm-charts prometheus \
  --namespace prometheus-system --create-namespace \
  --set prometheus-pushgateway.enabled=false \
  --set alertmanager.enabled=false \
  -f https://raw.githubusercontent.com/opencost/opencost/develop/kubernetes/prometheus/extraScrapeConfigs.yaml

This will install Prometheus in the prometheus-system namespace with default settings for use with OpenCost.

If you wish to use a different Prometheus installation or work with another compatible technology, please refer to the Prometheus installation page.

Create the OpenCost Namespace

Create the opencost namespace for your installation:

kubectl create namespace opencost

Alternate namespaces may be used if necessary.

On-Prem Configuration

On-prem cluster pricing is supported in OpenCost by providing default prices for node data via the default.json. Here are the include default prices:

{
    "provider": "custom",
    "description": "Default prices based on GCP us-central1",
    "CPU": "0.031611",
    "spotCPU": "0.006655",
    "RAM": "0.004237",
    "spotRAM": "0.000892",
    "GPU": "0.95",
    "storage": "0.00005479452",
    "zoneNetworkEgress": "0.01",
    "regionNetworkEgress": "0.01",
    "internetNetworkEgress": "0.12"
}

Custom pricing using the OpenCost Helm Chart

Custom pricing may be applied by updating your local OpenCost Helm values file. Any values not overridden will default to the values provided by the Helm chart, which match those in the default.json.

opencost:
  customPricing:
    enabled: true
    costModel:
      description: Modified prices based on your internal pricing
      CPU: 1.25
      RAM: 0.50
      storage: 0.25

The values in the example above will be reflected in the OpenCost with substantially higher CPU, RAM, and PV costs compared to the default pricing.

On-Prem Cloud Costs

note

Cloud Costs are not currently supported for on-prem, but you may configure OpenCost to view costs associated with other cloud service providers.

You may refer to the Cloud Costs documentation for configuring Cloud Costs for multiple accounts and cloud service providers.

Install OpenCost

Helm is the preferred installation method for OpenCost.

Using the OpenCost Helm Chart

You may check out the source for the OpenCost Helm Chart or you may install the Helm chart directly to your Kubernetes cluster. Review the values.yaml for the settings available for customization. With your custom settings in the Helm values file local.yaml, install OpenCost:

helm install opencost --repo https://opencost.github.io/opencost-helm-chart opencost \
  --namespace opencost -f local.yaml

Updating OpenCost via Helm

Upgrading the Helm chart version or updating settings may be done with the following:

helm upgrade opencost --repo https://opencost.github.io/opencost-helm-chart opencost \
  --namespace opencost -f local.yaml

Installing with the OpenCost Manifest

Installing from the OpenCost manifest is supported for on-prem.

For basic Kubernetes Cost Allocations without Cloud Costs or any customizations you may use the OpenCost manifest. Prometheus is still required and the Helm chart installation is recommended for anything beyond this simple use case.

kubectl apply --namespace opencost -f https://raw.githubusercontent.com/opencost/opencost/develop/kubernetes/opencost.yaml