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Cluster Logs Demo with OpenTelemetry & ClickHouse®

A demo to collect all cluster logs with the OpenTelemetry Collector and send them to a ClickHouse instance.

Quickstart

This repository depends on an existing Kubernetes cluster with the Altinity Operator installed in the kube-system namespace.

Clone this repository and in the directory run (modifying the namespace as you see fit):

helm install cluster-logs-demo . --namespace=demo --create-namespace

Connect

Grafana

Connect to Grafana:

kubectl port-forward -n demo services/monitoring-grafana 3000:80

You can then load Grafana in your browser at http://localhost:3000 — there is no username or password.

Architecture

Components

  • Altinity Operator (not included) - for creating and managing a ClickHouse Cluster
  • ClickHouse - for storing log data
  • OpenTelemetry Collector - deployed as a daemonset to collect node logs and metrics
    • OpenTelemetry Exoprter for ClickHouse - to forward logs data to ClickHouse
  • Grafana - for visualizing logs
    • ClickHouse Plugin for Grafana - to connect ClickHouse as a Grafana datasource.

Legal

Altinity®, Altinity.Cloud®, and Altinity Stable® are registered trademarks of Altinity, Inc. ClickHouse® is a registered trademark of ClickHouse, Inc.; Altinity is not affiliated with or associated with ClickHouse, Inc.