confluent cli list topics

confluent cli list topics

We also need to enable Schema Registry for our Confluent Cloud environment. System test coverage is not automatically measured at the moment, but that is arguably acceptable since system tests are designed to cover real-world customer workflows rather than lines of code. confluent kafka topic Version confluent kafka topic list Description List Kafka topics. The confluent CLI needs to also authenticate with the Schema Registry using an API key and secret. By clicking "SIGN UP" you agree to receive occasional marketing emails from Confluent. And here's a code snippet that lists all Kafka topics using the kafka-python library: And that's it! confluent kafka topic list [flags] Flags Cloud On-Prem --cluster string Kafka cluster ID. Go is designed for easy networked programming, and its very fast to write code to perform HTTP requests to query APIs, for instance. For a production environment, you should consider a more robust and secure configuration. The natural tradeoff when aiming for maximizing consistency is that sometimes commands can feel verbose, or commands might not fit into natural groupings. Easy cross-compilation is one of the main selling points of Gojust set the. There are a lot of different grammar design options, and at the end of the day what matters is choosing something that feels familiar to developers, isnt overly cumbersome to type, and most importantly, a format that enables consistency throughout the CLI. Return to file env.delta and on line 9, copy the value assigned to CLOUD_SECRET. Apache, Apache Kafka, Kafka, and associated open source We considered a variety of CLI grammars used in the industry when deciding how to name commands and flags in our CLI. The Confluent CLI needs to authenticate with Confluent Cloud using an API key and secret that has the required privileges for the cluster. Checkout confluent-cli by . We have a simple Makefile script that tags and publishes new Docker Hub images containing our CLI for cloud or on-prem. Start a consumer to show full key-value pairs. I have gone through some links and found that if ZooKeeper contains a list of brokers, and if, in this list, the IP address is present, then a kafka broker is running. Kafka calculates the partition by taking the hash of the key modulo the number of partitions. confluent local commands with a local install of Confluent Platform. No spam ever. Nonetheless, both CI systems are integrated as GitHub webhooks so contributors to our codebase dont feel much friction from having two systems behind the scenes. If you encounter any issues while listing Kafka topics, here are a few common problems and their solutions: Error connecting to the broker: Make sure your Kafka broker is running and that you've entered the correct broker address in the --bootstrap-server parameter. Make a local directory anywhere youd like for this project: Next, create a directory for configuration data: From the Confluent Cloud Console, navigate to your Kafka cluster and then select CLI and Tools in the lefthand navigation. Installing Confluent kafka locally and Starting with Ksql , Transactional Event QueuesAdvanced Queuing, Oracle Transactional Event QueuesAdvanced Queuing, Transactional Event QueueApache Kafka. Copyright Confluent, Inc. 2014-2023. Our CLIs can potentially communicate with several different backends, and these various APIs must all be exposed through a single unified customer interface. Native darwin/arm64 builds are available as of ccloud and confluent v1.27.0. For unit tests, Go has built-in support for generating coverage metrics, but for integration and system tests, the situation becomes much trickier. Create the Kafka topic 6. GitOps can work with policy-as-code systems to provide a true self-service model for managing Confluent resources. This repository is no longer maintained by Confluent. compatibility table. Copyright Confluent, Inc. 2014- Overall, this framework operating model significantly accelerates the velocity with which we can ship new features and greatly reduces our ongoing operational burden as we can delegate many feature-specific questions to the relevant teams. Network access. Here is the command to do this. And with authentication and machine readable output, the CLI supports automated workflows as well. This requires keeping track of the dependency order of steps in the release (i.e., drawing and maintaining a directed acyclic graph) and, as mentioned, ensuring that the process can be reverted when any type of failure occurs. (for more details, check out the Announcing the Source Available Confluent CLI The CLI checks for updates by listing all of the versions available in our S3 bucket and deciding whether the latest version found in S3 is newer than the current version installed. Confluent CLI provides an option to check for a newer version of When you specify the partition, you can optionally specify the offset to start consuming from. With the addition of Docker images, support for logins based on environment variables, and stateless command execution, Confluents CLIs are well suited for a wide array of automation tasks and other production use cases. Lets start a console consumer to read only records from the first partition, 0. Execute the following command, making sure to replace with the address of one of your Kafka brokers: For example, if your Kafka broker is running on localhost:9092, the command would be: This command will display a list of all the topics in your Kafka instance. In this section, we'll go beyond the command-line tools and explore how to list Kafka topics programmatically using the Kafka AdminClient API and some popular Python libraries. Get tutorials, guides, and dev jobs in your inbox. Running confluent update on those versions on Alpine To list all topics, you can create an instance of the AdminClient class and call the listTopics method. To create a topic, you can use the kafka-topics.sh script with the --create flag. Also, the syntax of versioning in go mod is also not always intuitive as, say, Node.js. If you havent tried Confluent Cloud yet, you can get started by installing ccloud with a simple curl command and then running ccloud signup. Copyright Confluent, Inc. 2014-2023. And now we will establish the environment variables for our current command shell. The REST proxy is Confluent Community Licenced. Sometimes youll need to send a valid key in addition to the value from the command line. confluentinc/cli: CLI for Confluent Cloud and Confluent Platform - GitHub Now you can not only list the topics from the command line, but programmatically as well. Stop Googling Git commands and actually learn it! Then enter these records either one at time or copy-paste all of them into the terminal and hit enter: Kafka works with key-value pairs, but so far youve only sent records with values only. Figure 1. Policy-as-code is the practice of permitting or preventing actions based on rules and conditions defined in code. The Confluent CLI lets you manage your Confluent Cloud and Confluent Platform deployments, right from the terminal. Both of Confluents CLIs now natively support Alpine Linux, which is commonly used in Docker-based workflows. The confluent command line interface (CLI) is a convenient tool that enables developers to manage both Confluent Cloud and Confluent Platform. So that we dont unnecessarily exhaust any Confluent Cloud promotional credits, lets delete the DatagenSource connector instance. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. In VSCode, locate and open file__ mysql-sink-config.json__. Using a new environment keeps your learning resources separate from your other Confluent Cloud resources. In this model, different feature-level teams (such as the ksqlDB team, the security team, etc.) You signed in with another tab or window. However, there are not many universal best practices. Create Managed Kafka Connectors with the Confluent CLI --context string CLI context name. Once the producer is active, you can type messages, delimiting them with return. To build for Darwin/arm64, run the following: To build for Linux (glibc or musl), install cross compiler musl-cross with Homebrew: To build for Windows/amd64, install mingw-w64 compilers with Homebrew: Cross compilation from an M1 Macbook (Darwin/arm64) to other platforms is also supported. 1. In v5.5 of Confluent Platform the REST Proxy added new Admin API capabilities, including functionality to list, and create, topics on your cluster. When opening a PR, please make sure to follow our contribution guide. A wide range of resources to get you started, Build a client app, explore use cases, and build on our demos and resources, Confluent proudly supports the global community of streaming platforms, real-time data streams, How to list and create Kafka topics using the REST Proxy API Figure 2. Downloading Confluent Platform will accomplish this. Video courses covering Apache Kafka basics, advanced concepts, setup and use cases, and everything in between. The release process also runs this script and generates and merges the necessary PRs into our documentation repositories. The Confluent CLI is available to install for macOS, Linux, and Windows. From the Billing & payment section in the Menu, apply the promo code CC100KTS to receive an additional $100 free usage on Confluent Cloud (details). For all except one legacy SDK, we generate these Go SDKs automatically via openapi-generator. We reviewed a few of the design and architectural decisions we made at Confluent when creating our customer-facing CLIs. One-minute guides to Kafka's core concepts. Lets list the available environments for our org. You should still use kafka-run-class with any Kafka installation, hosted or otherwise. We should now have sufficient sample data in the transactions topic. To start with, you need the cluster ID: Confluent Platform. If an update is available and the user agrees to download it, the CLI binary attempts to replace itself; if the user/file has insufficient permissions, the update will be canceled. Apache, Apache Kafka, Kafka, and associated open source confluent v2.17.2 and later can be updated directly with confluent Count the messages 8. A CLI to start and manage Confluent Platform from command line. The Confluent CLI Overview shows how to get started with the Confluent CLI. 1. You may need to use chmod +x kafka-topics.sh to make it executable. From the Billing & payment section in the Menu, apply the promo code CC100KTS to receive an additional $100 free usage on Confluent Cloud (details). If an update is found, the CLI will prompt the user to update, keeping the majority of our users on the most recent version. The Confluent CLI is compatible with the following operating systems and 5 days ago debian Release improvements ( #1927) 3 days ago docker Clean up GoReleaser build script and release Dockerfiles ( #1917) last week internal DGS-7258 Async API Ability to only export topics with prefix ( #1925) 2 days ago lib Build CLI for arm64 Linux (and Alpine) ( #1442) 8 months ago mk-files Release improvements ( #1927) 3 days ago Permission issues: If you get a permission error while running the kafka-topics.sh script, make sure the script has the correct permissions. with the operating system. Alright, with that, our environment preparation is complete. In cases where heavy customization is needed between cloud and on-prem Confluent deployments, we create two similarly-named files, for example. After you log in to Confluent Cloud, click on Add cloud environment and name the environment learn-kafka. It is now possible to sign up for Confluent Cloud right from the CLI. We have recently added support for new operating systems and distribution mechanisms. We will use the default environment so lets set it as the default. In addition to checking the pass/fail results of tests, we have also attempted to remain vigilant about code coverage. See the demo below, and this blog post for details. This time youll add more than one partition so you can see how the keys end up on different partitions. Fortunately, we were aware of this problem relatively early in the development of Confluent, and we were able to engage with other teams to establish some degrees of standardization. Video courses covering Apache Kafka basics, advanced concepts, setup and use cases, and everything in between. Perhaps we want to pause a connector instance temporarily. . Apache Kafka, and its ecosystems, Use the Cloud quick start to get up and running with Confluent Cloud using a basic cluster, Stream data between Kafka and other systems, Use clients to produce and consume messages, 3. If your Kafka topic is in Confluent Cloud, use the kafka-console-consumer command with the --partition and --offset flags to read from a specific partition and offset. In addition to the confluent CLI, we will also be using Kafka clients that will need to authenticate with the cluster and Schema Registry using the API keys and secrets. your system. Kafka CLI Cheat Sheet | The Coding Interface For the Confluent CLI to work as expected, ensure you have the appropriate How can you read from a specific offset and partition of a Kafka topic? Return to file datagen-source-config.json and on line 8, replace with the copied value assigned to CLOUD_SECRET. One of the output files is delta_configs/env.delta which contains commands that establish environment variables equal to the cluster. On line 8, copy the value assigned to CLOUD_KEY. This value can be obtained in the AWS console display of the EC2 instance details. The release and update infrastructure for our CLI is arguably the most important aspect of our tooling, especially since we release on a relatively frequent weekly or bi-weekly cadence. Your first step is to create a topic to produce to and consume from. When using the confluent CLI, you usually need to specify your environment and cluster for every command. Even though Go has verbose requirements like. document.write(new Date().getFullYear()); Confluents CLIs have always worked on Windows, Mac, and Linux. If you havent done so already, close the previous console consumer with a CTRL+C. Based on our past experiences with software release processes growing out-of-hand in terms of complexity, manual checks, etc., we have consciously put in a lot of effort to ensure that deployments remain as one-touch as possible. Instructions for installing Confluent CLI and configuring it to your Confluent Cloud environment is available from within the Confluent Cloud Console: navigate to your Kafka cluster, click on the CLI and tools link, and run through the steps in the Confluent CLI tab. blog post). If you run this demonstration yourself, you need to tear down the environment after doing so to avoid unnecessarily accruing cost to the point your promotional credits are exhausted. Spring Boot with Redis: HashOperations CRUD Functionality, Java Regular Expressions - How to Validate Emails, Java: Finding Duplicate Elements in a Stream, Make Clarity from Data - Quickly Learn Data Visualization with Python, ./bin/zookeeper-server-start.sh ./config/zookeeper.properties, ./bin/kafka-server-start.sh ./config/server.properties, ./kafka-topics.sh --list --bootstrap-server , ./kafka-topics.sh --list --bootstrap-server localhost:9092. confluent update command. If you would like to provide any suggestions or feedback, feel free to file a reach out on the Confluent Forum, send us an email at cli-team@confluent.io, or file a ticket through Confluent Support. personal data will be processed in accordance with our Privacy Policy. We have been quite pleased with the performance, stability, YAML job syntax, and even the UI of Azure Pipelines. Video courses covering Apache Kafka basics, advanced concepts, setup and use cases, and everything in between. Confluent CLI currently does not have the ability to specify reading from a particular partition, so for the next few steps youll be using the console consumer built into a Docker image. 1 Answer Sorted by: 0 The Confluent Cloud CLI ccloud is not a replacement for those Kafka CLI commands and confluent command is for managing a local temp cluster of the platform. Description Confluent Cloud client application throws authorization exception (i.e, TopicAuthorizationFailedError, TOPIC_AUTHORIZATION_FAILED) when consuming or producing to a topic. When API changes are made, openapi-generator can be used with CI hooks to automatically publish new SDK versions. Next, lets create a DatagenSource connector instance. List all Kafka 0.10 topics using - -zookeeper flag without access to A tag already exists with the provided branch name. update command. Hands On: Confluent Cloud Managed Connector API. The MySQL Sink connector instance appears in the list with a status of Provisioning. Another reason we chose Go (in spite of any gripes about dependency management) is the robust ecosystem of tools in the open source community. At the time we were getting started, Azure Pipelines was a natural fit for our project because it was the only cloud CI solution to offer this functionality. Download the library by running the following: Once thats installed, well clone the GitHub repository that contains the files needed to run the exercises for the Kafka Connect 101 course. On line 8, replace with the copied value assigned to CLOUD_KEY. We also heavily rely on GoReleaser for generating binaries and archives for all of the platforms we support, and for publishing those build artifacts to S3. Positional arguments are required in a consistent way. SSL Authentication with Apache Kafka | Contino Engineering - Medium Lets run the following command in the broker container to start a new console producer: Then enter these records either one at time or copy-paste all of them into the terminal and hit enter: After youve sent the records, you can close the producer with a CTRL+C command. Well use a useful bash library of functions for interacting with Confluent Cloud. In another realm, the Stripe CLI offers syntax like stripe customers create, using noun(s) verb where resources might be plural. With dozens of contributors, thousands of commits, and many thousands of lines of code, it is critical to organize our repository in an intuitive, consistent way. Complete the following steps to set up your environment. Unsubscribe at any time. We wanted to write code once and cross-compile with minimum extra effort. You'll see the list of topics printed in the console. Then start a new console consumer to read only records from the second partition: After a few seconds you should see something like this. Instructions for installing Confluent CLI and configuring it to your Confluent Cloud environment is available from within the Confluent Cloud Console: navigate to . The CLI team is highly responsive to user feedback and is interested in hearing about both bug reports and feature requestsany way to help us serve users better. Provision your Kafka cluster 2. This CLI script allows us to list, create, and describe the topics available on our cluster. Confluent Platform, macOS with 64-bit Intel chips (Darwin AMD64), Windows with 64-bit Intel or AMD chips (Microsoft Windows AMD64), Linux with 64-bit Intel or AMD chips (Linux AMD64), Linux with 64-bit ARM chips (Linux ARM64), Alpine with 64-bit Intel or AMD chips (Alpine AMD64), Alpine with 64-bit ARM chips (Alpine ARM64), The independently downloaded Confluent CLI has update checks enabled On the user side, the CLI automatically checks at most once per day for available updates (users can always check manually by running ccloud update or confluent update). When we started the CLI, go mod was still under development, and it took until about Go 1.15 before we stopped having issues with dependency management. Built-in autocompletion is a convenient feature to help you quickly write commands. Here's a code example to demonstrate this: Replace "localhost:9092" with your Kafka broker's address, and run the code. We can create a client configuration file using the confluent CLI. Confluent's CLIs have always worked on Windows, Mac, and Linux. During this exercise we will be streaming data to a MySQL database running on the local machine in a Docker container. Create new credentials for your Kafka cluster and Schema Registry, writing in appropriate descriptions so that the keys are easy to find and delete later. On line 10, replace with the public endpoint of the host where the MySql database is running. to use Codespaces. (, The Confluent CLI packaged with Confluent Platform has update checks disabled We can now save and close the configuration file. Delete topic in Kafka 0.8.1.1 - Stack Overflow Click on the "Clients" option. After your email is verified, you can create Kafka clusters, configure ksqlDB apps, and more. If you would like to provide any suggestions or feedback, feel free to file a reach out on the Confluent Forum, send us an email at cli-team@confluent.io, or file a ticket through Confluent Support. And finally, we will shut down the mysql Docker container and free its resources. Use Git or checkout with SVN using the web URL. The Confluent CLI will automatically save them in ~/.confluent/config.json making them available for use by the CLI. Create the Kafka topic 4. If so, run the following command to identify its resource ID which is needed for the step that follows: Confluent CLI executes. For instance: To get a list of available commands, run: Set CONFLUENT_CURRENT if you want to use a top directory for confluent runs other than your platform's tmp directory. Specifying a specific offset can be helpful when debugging an issue, in that you can skip consuming records that you know arent a potential problem. Using the connector instance ID that was included in the list command output, lets use the describe option to obtain additional details about the connector instance. Other functional teams (e.g., Connect, Schema Registry) contribute code to the clients in order to expose the features they build. We know that was quite a bit of work, but now were ready to get started with this and all of the following exercises. GitHub - confluentinc/confluent-cli: Confluent Platform CLI Are you sure you want to create this branch? s3-us-west-2.amazonaws.com/confluent.cloud. To capture all this with an example, a valid command in the CLI is: Since consumergroup is not hyphenated, make is not a standard verb, the verb make comes before the (sub-)noun consumergroup, --Name should not be capitalized (and should likely be a position argument), and --sessiontimeout should be hyphenated. The CLI team acts as gatekeepers and supporters: we ensure any new commands agree with our UX and grammar guidelines, we verify that test coverage is sufficient for new commands, and we help contributors get up and running quickly with adding new commands. own their respective commands and sub-commands within the CLI. One reason dependencies were painful is that, in general, you can only have one version of a dependency across your project. Produce records with full key-value pairs, 7. You can download the latest version of Kafka from the official Apache Kafka website. It will consume records from the transactions topic and write them out to a corresponding table in our MySQL database that is running in the local Docker container that we started during the exercise environment setup steps. Produce events to the Kafka topic 6. We will use various CLI during the course exercises including confluent so these need to be available on the machine you plan to run the exercise on. David Hyde is the engineering lead for the CLI Team at Confluent. 2013-2023 Stack Abuse. Create a Kafka topic called orders in Confluent Cloud. At the same time, modern tech stacks such as CI/CD pipelines require large amounts of automation, which is often particularly painful to achieve with low-level infrastructure like databases and data platforms. Go ahead and shut down the current consumer with a CTRL+C. All rights reserved. We need to run these CI tests on Windows, Mac, and Linux since our customers use all of these platforms, and we ideally dont want to host and maintain that infrastructure ourselves. Any resource that can be managed with Confluent (a connector, a service account, a Kafka cluster) must support at least the basic CRUD operations. Write the cluster information into a local file, 5. Lets start by setting the active environment and cluster that CLI commands apply to. For example, a server used for continuous integration jobs can support multiple parallel jobs that use the ccloud CLI without worrying about the values stored in or corrupting the ~/.ccloud/config.json configuration file. Finally, newer commands like ccloud signup and user management make the CLIs more complete interfaces for Confluents rich functionality. docs.confluent.io/confluent-cli/current/overview.html, Bump pgregory.net/rapid from 0.5.7 to 0.6.1 (, https://github.com/confluentinc/cli/releases/latest, Download the latest Windows ZIP file from. All contributions are appreciated, no matter how small! If you've stumbled upon this article, chances are you've already been working with Apache Kafka, the open-source distributed streaming platform that has gained significant popularity for its ability to handle large-scale, real-time data processing. We created the open-source bincover tool in order to measure integration test coverage as well. Policy-as-code is the practice of permitting or preventing actions based on rules and conditions defined in code. Our CLIs are especially interesting because theyre the only interface that has to accommodate both human and programmatic usage. And lets verify both the connector and task are once again running. Note: It's important to note that this setup is suitable for local development and testing purposes. If you already completed them for that exercise, you can skip to step 16 of this exercise setup. So far youve learned how to consume records from a specific partition. Click on LEARN and follow the instructions to launch a Kafka cluster and to enable Schema Registry. The Confluent CLI is feature-packed to help users go from learning These tools are bundled with the Kafka installation and are typically located in the bin directory. There was a problem preparing your codespace, please try again. It is designed to deliver single-digit millisecond query performance at any scale. Well to be fair youve sent key-value pairs, but the keys are null. Kafka comes with a set of handy command-line tools that make it easy to interact with the system. (. Install the confluent cli curl. In the context of GitOps for Confluent, suitable policies Amazon DynamoDB is a fully managed, serverless, key-value NoSQL database service that is highly available and scalable. Kafka partitions We generally followed the Standard Go Project Layout suggested by Kyle Quest. In this step youll consume the rest of your records from the second partition 1. personal data will be processed in accordance with our Privacy Policy. The confluent command line interface (CLI) is a convenient tool that enables developers to manage both Confluent Cloud and Confluent Platform. We will only share developer content and updates, including notifications when new content is added. This tells Confluent Cloud to connect using TLS if the destination hose is set up to do so. In cases where APIs overlap (such as when a command is available for both cloud and on-prem Confluent deployments), we just use an if statement when initializing our hierarchy of CLI commands in order to add a subcommand that talks to the appropriate API.

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