Question 1

What is a Flink UI?

Accepted Answer

A Flink UI is a graphical interface for an Apache Flink cluster. It lets you deploy and monitor Flink jobs, run Flink SQL, inspect task managers, and track cluster health without hand-crafting CLI calls. Flink ships with a basic built-in web UI, while Flink Manager provides a production-grade console with role-based access control, schedulers, and real-time alerting.

Question 2

How do I open the Apache Flink UI?

Accepted Answer

Apache Flink's built-in web UI is served on port 8081 by default (JobManager REST/UI endpoint). Open http://<jobmanager-host>:8081 in your browser. For multi-cluster management, role-based access, and long-term monitoring beyond Flink's stock UI, Flink Manager adds a dedicated console that connects to one or many Flink clusters.

Question 3

What is a Kafka UI?

Accepted Answer

A Kafka UI is a web-based interface for Apache Kafka. It typically shows topics, consumer groups, messages, offsets, and schema registry data in a dashboard instead of requiring CLI commands. Kafka Governance adds enterprise governance on top: schema management, topic lifecycle workflows, ACL controls, and data lineage.

Question 4

Is there an open-source Flink UI?

Accepted Answer

Yes. The Apache Flink project itself ships an open-source web UI as part of the distribution (the Flink Dashboard). Third-party open-source projects also exist for job management and SQL authoring. Flink Manager is a commercial console layered on top of Apache Flink that adds RBAC, schedulers, retention rules, and production alerting for teams that need more than the stock dashboard.

Question 5

Is there an open-source Kafka UI?

Accepted Answer

Yes. Popular open-source Kafka UIs include Provectus Kafka-UI and Kafbat UI, which fork from the same original Kafka-UI project, as well as Redpanda Console. These are great for browsing topics and consumer groups. Kafka Governance takes a production-governance approach on top of that foundation with schema registry management, approval workflows, ACL enforcement, and data lineage.

Question 6

How do I get a trial license?

Accepted Answer

You can request a free 30-day trial license directly from the Flink Manager license page — no account and no credit card required. Fill in the short form and you will receive a license key immediately.

Question 7

Is Kafka Governance available?

Accepted Answer

Kafka Governance is currently in active development. It will provide schema registry, topic management, ACL controls, and data lineage tracking. Contact us to join the waitlist and get notified at launch.

Question 8

Do you offer consulting services?

Accepted Answer

Yes. Beyond our products, we provide hands-on consultancy for Apache Flink and Apache Kafka: architecture design, performance tuning, data integration, and managed platform operations.

Question 9

Where are you based?

Accepted Answer

Vinteros Labs is based in Luxembourg, in the heart of Europe, and serves clients across the continent and beyond.

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