Observatorium

Free plan APISelf-hosted

What Observatorium is

Observatorium is a free, open-source observability system for Kubernetes environments. It ingests, stores, and serves metrics and logs, while tracing is marked as coming soon. The project combines Thanos, Loki, Tempo or Jaeger, and Open Policy Agent behind consistent tenancy APIs and signal correlation. Metrics enter through Prometheus remote write and are queried through Prometheus-compatible APIs. Logs use the Loki Push API and are available through Loki query and tail APIs. OIDC/OAuth2 provides authentication, while Open Policy Agent handles authorization. Its API proxy is intended for all external traffic and supports tenant isolation, cross-tenant requests, rate limiting, roles, and tracing. Deployment guidance uses Jsonnet-generated manifests in a local Kubernetes cluster, with self-hosted operation and managed Kubernetes support. The Apache 2.0 project is described as work in progress, with documentation, design, user guides, and configuration support still developing. Thanos Receive replicates writes across availability zones and uploads data blocks to regional Amazon S3 storage.

Who it suits

Observatorium suits teams operating Kubernetes observability in their own environments, especially larger users using the Operator in production. It is also suitable for teams wanting open-source tenancy controls and APIs across metrics and logs.

What it does well

Free and open source under Apache 2.0
Prometheus and Loki ingestion and query APIs
OIDC/OAuth2 authentication with OPA authorization
Tenant isolation and cross-tenant request support
Self-hosted and managed Kubernetes support

What to know first

Tracing is labeled as coming soon
Project documentation and configuration remain in progress
Requires operating the system in your environment

Verdict

Observatorium brings several observability projects together behind shared tenancy and access controls. It provides strong metrics and log foundations, but tracing and project documentation are still developing.

Facts from Observatorium's own pages

Access control: The API proxy is described as supporting tenant isolation, cross-tenant requests, rate limiting, roles, and tracing, and as intended for all external traffic. · observatorium.io, 5 Oct 2026
Architecture: It combines projects including Thanos, Loki, Tempo/Jaeger, and Open Policy Agent under consistent tenancy APIs. · observatorium.io, 11 Oct 2026
Authentication: The homepage lists authentication using OIDC/OAuth2. · observatorium.io, 11 Oct 2026
Authorization: The homepage lists authorization using Open Policy Agent. · observatorium.io, 11 Oct 2026
Deployment: The project provides Jsonnet configuration and a Kubernetes Operator deployment option. · observatorium.io, 11 Oct 2026
External traffic: The documentation says the Observatorium API proxy should be used for all external traffic and supports tenancy isolation, rate limiting, roles, and tracing. · observatorium.io, 11 Oct 2026
Integrations: The documentation describes combining Thanos, Loki, Tempo/Jaeger, and Open Policy Agent in the Observatorium system. · observatorium.io, 5 Oct 2026
Intended users: The getting-started guide describes the system for people operating observability in their own environments and notes that the Operator is used in production by larger users. · observatorium.io, 11 Oct 2026
License: The homepage describes Observatorium as open source under the Apache 2.0 license. · observatorium.io, 11 Oct 2026
Logs: It supports log ingestion through the Loki Push API and access through Loki query and tail APIs. · observatorium.io, 11 Oct 2026
Maintainers: The maintainers page lists contributors affiliated with Red Hat, Polar Signals, or unaffiliated contributors. · observatorium.io, 5 Oct 2026
Metrics: It supports Prometheus-compatible remote-write ingestion and query APIs. · observatorium.io, 11 Oct 2026
Metrics storage: The architecture page says Thanos Receive replicates each write request three times across availability zones and uploads two-hour data blocks to regional Amazon S3 storage. · observatorium.io, 11 Oct 2026
Project status: The repository describes the project as work in progress and says documentation, design, user guides, and configuration support are in progress. · github.com, 5 Oct 2026
Project type: The site describes Observatorium as a meta project that combines existing observability projects behind consistent tenancy APIs and signal correlation. · observatorium.io, 5 Oct 2026
Purpose: Observatorium is an open-source system for ingesting, storing, and using observability signals in a multi-tenant Kubernetes environment. · observatorium.io, 11 Oct 2026
Support: The project repository directs users to its Slack channel or GitHub issues for questions or missing features. · github.com, 5 Oct 2026
Tracing status: The homepage labels traces as “Coming Soon!”. · observatorium.io, 11 Oct 2026

Where Observatorium stands on Freedom251

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