This document outlines the configuration for setting up Loki and Prometheus as datasources within Grafana. Proper datasource configuration is crucial for effective monitoring and logging, enabling you to visualize and analyze your system's behavior.

Prometheus Datasource Setup

The following YAML snippet configures the Prometheus datasource. Prometheus is commonly used for collecting and storing time-series metrics, which can be visualized alongside Loki logs in Grafana.

apiVersion: 1

deleteDatasources:
  - name: prometheus

datasources:
- name: prometheus
  type: prometheus
  access: proxy
  url: http://prometheus:9090
  isDefault: true
  editable: true

Loki Datasource Setup

This section details the configuration for the Loki datasource. Loki is a horizontally scalable, highly available, multi-tenant log aggregation system inspired by Prometheus. Integrating it with Grafana allows for unified log querying and analysis.

datasources:
- name: loki
  type: loki
  access: proxy
  orgId: 1
  url: http://loki:3100
  basicAuth: false
  isDefault: false
  version: 1
  editable: true

Complete Grafana Datasource Configuration

Combining both Prometheus and Loki configurations provides a comprehensive setup for observability within Grafana. This allows you to correlate metrics with logs, offering deeper insights into your applications and infrastructure.

apiVersion: 1

deleteDatasources:
  - name: prometheus
  - name: loki

datasources:
- name: prometheus
  type: prometheus
  access: proxy
  url: http://prometheus:9090
  isDefault: true
  editable: true
- name: loki
  type: loki
  access: proxy
  orgId: 1
  url: http://loki:3100
  basicAuth: false
  isDefault: false
  version: 1
  editable: true

Key Configuration Parameters

• name: The display name for the datasource in Grafana.
• type: The type of datasource (e.g., 'prometheus', 'loki').
• url: The HTTP endpoint for the datasource service.
• access: Specifies how Grafana accesses the datasource ('proxy' is common for internal services).
• isDefault: If set to true, this datasource will be selected by default when creating new dashboards.
• editable: Allows the datasource to be edited within the Grafana UI.

Further Resources

• Grafana Loki Datasource Documentation
• Grafana Prometheus Datasource Documentation
• Grafana Configuration Guide