> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt
> Use this file to discover all available pages before exploring further.

# Infrastructure via Helm

> Deploy the Helm charts that support a Midaz installation, including the OpenTelemetry Collector.

Lerian publishes Helm charts for Midaz and supporting services. Deploy each chart independently and review its `Chart.yaml` and values before choosing a version.

## Midaz dependencies

The `midaz-helm` chart can deploy these dependencies by default:

* Valkey
* PostgreSQL
* MongoDB
* RabbitMQ

For production, you can disable a bundled dependency and configure the Ledger to use an externally managed service. See [Configuring dependencies](/en/platform/deploy/midaz/midaz-dependencies).

## OpenTelemetry Collector

The OpenTelemetry Collector is a separate chart. It is no longer a dependency of `midaz-helm`.

Install it separately when you use the Midaz chart's default telemetry integration.

The chart reads the export API key from a Secret named `otel-api-key`, key `api-key`, in the release namespace. Create that Secret before you install the chart:

```bash theme={null}
CHART_VERSION=replace-with-chart-version
read -rsp 'OpenTelemetry API key: ' OTEL_API_KEY; printf '\n'
kubectl create namespace midaz --dry-run=client -o yaml | kubectl apply -f -
printf '%s' "$OTEL_API_KEY" | kubectl -n midaz create secret generic otel-api-key \
  --from-file=api-key=/dev/stdin
unset OTEL_API_KEY
helm install otel-collector-lerian \
  oci://registry-1.docker.io/lerianstudio/otel-collector-lerian \
  --version "$CHART_VERSION" -n midaz
```

<Warning>
  Do not set `opentelemetry-collector.extraEnvs` in your own values to add the key. Helm replaces that list instead of merging it. The chart's own entries, the API key and the node name that the kubelet receiver reads, disappear with it.
</Warning>

The Midaz chart enables `otel-collector-lerian.enabled` by default. That setting injects OTEL environment variables into the Ledger, CRM, and Tracer deployments. It does not install a collector. The default endpoint is `$(HOST_IP):4317`.

<Note>
  If you use your own collector endpoint, disable that integration and configure the relevant OTEL variables in the service configuration.
</Note>

## Other charts

The Helm repository also contains charts for products such as Tracer. Their application and chart versions are independent from `midaz-helm`. Inspect the chart you deploy instead of assuming a shared version.

## Resources

* [Helm chart repository](https://github.com/LerianStudio/helm)
* [Check a chart before you deploy](/en/platform/deploy/helm-version-compatibility)