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Articles by Thomas Jungbauer

The Hitchhiker's Guide to Observability - Limit Read Access to Traces - Part 8

December 6, 2025 -

In the previous articles, we deployed a distributed tracing infrastructure with TempoStack and OpenTelemetry Collector. We also deployed a Grafana instance to visualize the traces. The configuration was done in a way that allows everybody to read the traces. Every system:authenticated user is able to read ALL traces. This is usually not what you want. You want to limit trace access to only the appropriate namespace.

In this article, we’ll limit the read access to traces. The users of the team-a namespace will only be able to see their own traces.

OpenShift Observability Distributed Tracing OpenTelemetry Tempo Grafana

The Hitchhiker's Guide to Observability - Here Comes Grafana - Part 7

December 4, 2025 -

Thomas Jungbauer - 12 min

While we have been using the integrated tracing UI in OpenShift, it is time to summon Grafana. Grafana is a visualization powerhouse that allows teams to build custom dashboards, correlate traces with logs and metrics, and gain deep insights into their applications. In this article, we’ll deploy a dedicated Grafana instance for team-a in their namespace, configure a Tempo datasource, and create a dashboard to explore distributed traces.

OpenShift Observability Distributed Tracing OpenTelemetry Tempo Grafana

The Hitchhiker's Guide to Observability Introduction - Part 1

November 23, 2025 -

Thomas Jungbauer - 4 min

With this article I would like to summarize and, especially, remember my setup. This is Part 1 of a series of articles that I split up so it is easier to read and understand and not too long. Initially, there will be 6 parts, but I will add more as needed.

OpenShift Observability Distributed Tracing OpenTelemetry Tempo Grafana

The Hitchhiker's Guide to Observability - Grafana Tempo - Part 2

November 24, 2025 -

Thomas Jungbauer - 17 min

After covering the fundamentals and architecture in Part 1, it’s time to get our hands dirty! This article walks through the complete implementation of a distributed tracing infrastructure on OpenShift.

We’ll deploy and configure the Tempo Operator and a multi-tenant TempoStack instance. For S3 storage we will use the integrated OpenShift Data Foundation. However, you can use whatever S3-compatible storage you have available.

OpenShift Observability Distributed Tracing OpenTelemetry Tempo Grafana

The Hitchhiker's Guide to Observability - Central Collector - Part 3

November 25, 2025 -

Thomas Jungbauer - 12 min

With the architecture defined in Part 1 and TempoStack deployed in Part 2, it’s time to tackle the heart of our distributed tracing system: the Central OpenTelemetry Collector. This is the critical component that sits between your application namespaces and TempoStack, orchestrating trace flow, metadata enrichment, and tenant routing.

OpenShift Observability Distributed Tracing OpenTelemetry Tempo Grafana

The Hitchhiker's Guide to Observability - Example Applications - Part 4

November 26, 2025 -

Thomas Jungbauer - 13 min

With the architecture defined, TempoStack deployed, and the Central Collector configured, we’re now ready to complete the distributed tracing pipeline. It’s time to deploy real applications and see traces flowing through the entire system!

In this fourth installment, we’ll focus on the application layer - deploying Local OpenTelemetry Collectors in team namespaces and configuring example applications to generate traces. You’ll see how applications automatically get enriched with Kubernetes metadata, how namespace-based routing directs traces to the correct TempoStack tenants, and how the entire two-tier architecture comes together.

OpenShift Observability Distributed Tracing OpenTelemetry Tempo Grafana

The Hitchhiker's Guide to Observability - Understanding Traces - Part 5

November 27, 2025 -

Thomas Jungbauer - 4 min

With the architecture established, TempoStack deployed, the Central Collector configured, and applications generating traces, it’s time to take a step back and understand what we’re actually building. Before you deploy more applications and start troubleshooting performance issues, you need to understand how to read and interpret distributed traces.

Let’s decode the matrix of distributed tracing!

OpenShift Observability Distributed Tracing OpenTelemetry Tempo Grafana

The Hitchhiker's Guide to Observability - Adding A New Tenant - Part 6

November 28, 2025 -

Thomas Jungbauer - 4 min

While we have created our distributed tracing infrastructure, we created two tenants as an example. In this article, I will show you how to add a new tenant and which changes must be made in the TempoStack and the OpenTelemetry Collector.

This article was mainly created as a quick reference guide to see which changes must be made when adding new tenants.