Prometheus Agent Remote Write Config :: Kloudfuse Docs

Prometheus Agent Remote Write Config

Using an Existing Prometheus Server

  1. Determine the ingress IP for the Kloudfuse stack.

    kubectl get svc | grep kfuse-ingress-nginx-controller

    You can use either the EXTERNAL-IP address, or DNS name.
    DNS name does not work if the Kloudfuse stack is on a different VPC or cluster than the target cluster.
    You can use the IP address in all circumstances.

  2. Add a remote_write endpoint to use the Prometheus server. Choose the correct option, depending on your network protocol (http or https):

    http://<REPLACE KFUSE ADDRESS>/write as the remote_write

https:///write as the remote_write ```

|     |     |
| --- | --- |
|  | Starting with Kloudfuse 3.4.3 and Prometheus 2.40+, native histograms are supported. To enable sending native histograms, add `send_native_histograms: true` to your remote write configuration. See [Native and Exponential Histograms](https://docs.kloudfuse.com/platform/3.5.0/histogram-native-exponential/) for more details. |

  1. If the Prometheus server is installed using the standalone Prometheus helm chart, add the following helm values and run helm upgrade:

    server:
     # For Prometheus 2.40+ and Kloudfuse 3.4.3+, enable native histograms feature:
     extraArgs:
       enable-feature: native-histograms

serverFiles: prometheus.yml: remote_write: - url: http:///write queue_config: max_samples_per_send: 4000 # For Prometheus 2.40+ and Kloudfuse 3.4.3+, enable native histograms: send_native_histograms: true ```

Prometheus Operator

Helm Chart Values

Use these steps if the Prometheus server is installed using Prometheus Operator or kube-prometheus-stack helm chart:

  1. Add the following helm values:

    prometheus:
     prometheusSpec:
       # For Prometheus 2.40+ and Kloudfuse 3.4.3+, enable native histograms feature:
       enableFeatures:
      - native-histograms
remoteWrite:
    - queueConfig:
        maxSamplesPerSend: 4000
      url: http://<REPLACE KFUSE ADDRESS>/write
      # For Prometheus 2.40+ and Kloudfuse 3.4.3+, enable native histograms:
      sendNativeHistograms: true

  2. Run helm upgrade.

Prometheus CRD

Alternatively, configure the remote write through Prometheus CRD. Update the Prometheus CRD (kind: Prometheus) using the following configuration:

# For Prometheus 2.40+ and Kloudfuse 3.4.3+, enable native histograms feature:
enableFeatures:
  - native-histograms

remoteWrite:
  - queueConfig:
      maxSamplesPerSend: 4000
    url: http://<REPLACE KFUSE ADDRESS>/write
    # For Prometheus 2.40+ and Kloudfuse 3.4.3+, enable native histograms:
    sendNativeHistograms: true

Replacing the Prometheus Server

You can also replace the Prometheus server with Grafana Agent, which is lighter-weight and can be configured to scrape and emit write metrics.

Use the following helm chart to install the agent. Use the following helm values:

config:
  prometheus:
    remoteWrite:
      url: http://<REPLACE KfUSE ADDRESS>/write
    configs:
      <copy existing scrape configs here>