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[bitnami/*] docs: 📝 Add "Prometheus metrics" (batch 2) (#30662)

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* [bitnami/*] docs: 📝 Add "Prometheus metrics" (batch 2)

Signed-off-by: Javier J. Salmerón García <javier.salmeron@broadcom.com>

* docs: 📝 Apply requested changes

Signed-off-by: Javier J. Salmerón García <javier.salmeron@broadcom.com>

---------

Signed-off-by: Javier J. Salmerón García <javier.salmeron@broadcom.com>
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Javier J. Salmerón García
2024-11-28 16:37:42 +01:00
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bitnami/grafana-loki/README.md
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@@ -62,6 +62,24 @@ Bitnami will release a new chart updating its containers if a new version of the
The loki configuration file `loki.yaml` is shared across the different components: `distributor`, `compactor`, `ingester`, `querier` and `queryFrontend`. This is set in the `loki.configuration` value. Check the official [Loki Grafana documentation](https://grafana.com/docs/loki/latest/configuration/) for the list of possible configurations.
### Prometheus metrics
This chart can be integrated with Prometheus by setting `metrics.enabled` to true. This will expose the Grafana Loki native Prometheus port in both the containers and services. The services will also have the necessary annotations to be automatically scraped by Prometheus.
#### Prometheus requirements
It is necessary to have a working installation of Prometheus or Prometheus Operator for the integration to work. Install the [Bitnami Prometheus helm chart](https://github.com/bitnami/charts/tree/main/bitnami/prometheus) or the [Bitnami Kube Prometheus helm chart](https://github.com/bitnami/charts/tree/main/bitnami/kube-prometheus) to easily have a working Prometheus in your cluster.
#### Integration with Prometheus Operator
The chart can deploy `ServiceMonitor` objects for integration with Prometheus Operator installations. To do so, set the value `metrics.serviceMonitor.enabled=true`. Ensure that the Prometheus Operator `CustomResourceDefinitions` are installed in the cluster or it will fail with the following error:
```text
no matches for kind "ServiceMonitor" in version "monitoring.coreos.com/v1"
```
Install the [Bitnami Kube Prometheus helm chart](https://github.com/bitnami/charts/tree/main/bitnami/kube-prometheus) for having the necessary CRDs and the Prometheus Operator.
### Additional environment variables
In case you want to add extra environment variables (useful for advanced operations like custom init scripts), you can use the `extraEnvVars` property inside each of the subsections: `distributor`, `compactor`, `ingester`, `querier`, `queryFrontend` and `vulture`.