Prometheus Agent Remote Write Config

Using an Existing Prometheus Server

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.
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://<REPLACE KFUSE ADDRESS>/write as the remote_write
```

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

serverFiles:
  prometheus.yml:
    remote_write:
      - url: http://<REPLACE KFUSE ADDRESS>/write
        queue_config:
          max_samples_per_send: 4000

yaml

Prometheus Operator

Helm Chart Values

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

Add the following helm values:

prometheus:
  remoteWrite:
    - queueConfig:
        maxSamplesPerSend: 4000
      url: http://<REPLACE KFUSE ADDRESS>/write

yaml

Run helm upgrade.

Prometheus CRD

Alternatively,configure the remote write through Prometheus CRD.

Update the Prometheus CRD (kind: Prometheus) using the following remoteWrite entry:

remoteWrite:
  - queueConfig:
      maxSamplesPerSend: 4000
    url: http://<REPLACE KFUSE ADDRESS>/write

yaml

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>

yaml