Docker Image Reference for Confluent Platform

Using Docker images, you can install the entire Confluent Platform or individual components. The Confluent Platform component images are available on Docker Hub. The source files for the images are available in the GitHub repos. From GitHub you can extend and rebuild the images and upload them to your own DockerHub repository. The software required to build these images is covered by the Apache 2 License. To learn more about configuring these images, see Docker Image Configuration Reference for Confluent Platform.

The table below lists the available images and the Confluent software packages that they contain. The images that require the Confluent Enterprise License include proprietary components and must be licensed from Confluent when deployed.

The following sections list images by component type. In most cases, the license is noted for each package. For more information about package licenses, see Manage Confluent Platform Licenses.

These images provide build files for the Confluent Platform images. The license varies by package.

The following images contain Apache Kafka®.

Confluent Server is a component of Confluent Platform that includes everything in the cp-kafka package and additional commercial features that are only available as a part of the cp-server package. Following are a few key features included in Confluent Server:

Schema Registry provides a centralized repository for managing and validating schemas for topic message data, and for serialization and deserilazation of the data over the network.

Connect is part of Kafka and is used to integrate external systems with Kafka.

ksqlDB enables you to build event streaming applications leveraging your familiarity with relational databases.

The cp-ksqldb-server image contains Confluent monitoring interceptors. The monitoring interceptors enable connectors and SQL queries to collect metrics that can be visualized in Confluent Control Center.

REST Proxy provides a RESTful interface to an Kafka cluster, making it easy to produce and consume messages, view the state of the cluster, and perform administrative actions without using the native Kafka protocol or clients.

The REST Proxy image provides Confluent monitoring interceptors in the confluent-control-center package. The monitoring interceptors enable connectors and SQL queries to collect the metrics that can be visualized in Confluent Control Center.

The Confluent CLI (CLI) enables developers to manage both Confluent Cloud and Confluent Platform and is source-available under the Confluent Community License.

Control Center is a self-hosted web-based tool for managing and monitoring key components of Confluent Platform.

kcat is a command-line utility that you can use to test and debug Kafka deployments.

MQTT Proxy provides a scalable and lightweight interface that enables MQTT clients to produce messages to Kafka directly, in a Kafka-native way, that avoids redundant replication and increased lag.

Replicator enables you to easily and reliably replicate topics from one Kafka cluster to another.

Kafka uses ZooKeeper to store persistent cluster metadata and was a critical component of the Confluent Platform deployment. Starting with Kafka 3.4, KRraft is the default for cluster metadata management.

The Confluent Platform Docker images are tagged as follows:

is incremented when an updated image needs to be uploaded for the same .

For example, for the Confluent Platform 7.6.1 images with RHEL UBI 8 being the only supported and default OS, the available RHEL UBI 8 cp-base-new image tags are:

Additional tags are applied to the image of the default OS type:

To identify the image as being the default image for a given release.

To identify the most recent version of the image of the default OS type.

For the supported OS types in Confluent Platform 7.6, see Supported Versions for Confluent Docker Images.