OpenTelemetry Golang Tutorial

In this tutorial, we will learn how to set up tracing in Grafana and Kubernetes using OpenTelemetry with Golang. We will also explore Tempo, an open-source distributed tracing system for monitoring and troubleshooting distributed systems.

Setting up OpenTelemetry with Golang

To get started with OpenTelemetry in Golang, you first need to install the necessary packages. You can do this by using the following command:

    go get go.opentelemetry.io/otel
    go get go.opentelemetry.io/otel/exporters/otlp
    go get go.opentelemetry.io/otel/sdk
  

Tracing in Grafana

Once you have set up OpenTelemetry in your Golang application, you can start tracing your application. To view these traces in Grafana, you will need to set up an OpenTelemetry exporter that sends the traces to Grafana. Here is an example of how you can set up the exporter:

    exporter, err := otlp.NewExporter(
      otlp.WithInsecure(),
      otlp.WithAddress("localhost:4317"),
    )
  

Tracing in Kubernetes

Tracing in Kubernetes can be done by configuring the OpenTelemetry exporter to send the traces to a centralized tracing system like Tempo. Here is an example of how you can set up the exporter to send traces to Tempo:

    exporter, err := otlp.NewExporter(
      otlp.WithSecure(),
      otlp.WithAddress("tempo.example.com:4317"),
    )
  

Using Tempo for Distributed Tracing

Tempo is an open-source tracing system that is designed to store and analyze trace data in a scalable and cost-effective way. By sending your traces to Tempo, you can easily monitor and troubleshoot your distributed systems. To configure your OpenTelemetry exporter to send traces to Tempo, use the following code:

    exporter, err := otlp.NewExporter(
      otlp.WithSecure(),
      otlp.WithAddress("tempo.example.com:4317"),
    )
  

By following this tutorial, you can set up tracing in Grafana and Kubernetes using OpenTelemetry with Golang and utilize Tempo for monitoring and troubleshooting your distributed systems.