2023 Hadoop Troubleshooting Guide - Eric's Blog, Kafka Consumer Command Failed With Error: disconnected (org.apache.kafka.clients.NetworkClient), JAXRSUtils Warning Message in CM Server Log, Cloudera Community Contribution Recognition. You do this by adding a consumer / producer prefix. Copyright 2023 www.appsloveworld.com. Thanks, but that doesn't explain the kafkacat output. Options to insulate basement electric panel. Those are the listed listener addresses. We saw above that it was returning localhost. If we change advertised.listener back to localhost now, the Kafka broker wont work except for connections from the host. No "localhost". Manage Settings You turned on SASL/SCRAM authentication for your Amazon MSK cluster. You get this error when you're using IAM authentication and your access policy blocks topic operations, such as WriteData and ReadData. Adverb for when a person has never questioned something they believe. First add network bridge to both of your services then kafka will be your hostname. Its simplified for clarity, at the expense of good coding and functionality . This same instance will eventually run in many different k8s (and kafka) environments; the properties files will exist in the k8s configmaps. 09:09 PM, So, it seems the Kafka Broker is starting up with SSL, however - when the Controller is not able to connect to the Broker (org.apache.kafka.clients.NetworkClient) So how do we fix it? To learn more, see our tips on writing great answers. WARN [Producer clientId=console-producer] Bootstrap broker xx:9092 (id: -1 rack: null) disconnected (org.apache.kafka.clients.NetworkClient) Im not on safe grounds (more errors) yet but at least it certainly looks like your comment did the trick. org.apache.kafka.common.errors.TopicAuthorizationException: Not authorized to access topics: [test_topic]. For more information, see Mutual TLS authentication. 07-26-2017 Kafka Consumer Command Failed With Error: disconnected (org.apache If you remember just one thing, let it be this: when you run something in Docker, it executes in a container in its own little world. Note that permission boundaries and service control policies also block user attempting to connect to the cluster without the required authorization. | Register Now. You might get this error when the producer or consumer tries to connect to a TLS-encrypted cluster over TLS port 9094 without passing the SSL configuration. You get these errors when your cluster is running on a kafka.t3.small broker type with IAM access control and you exceeded the connection limit. Save my name, email, and site URL in my browser for next time I post a comment. Its a DIRTY HACK, but it works . password=; ok I see This means that the producer and consumer fail because theyll be trying to connect to thatand localhost from the client container is itself, not the broker. Why? Click here for instructions on how to enable JavaScript in your browser. Therefore, by default, clients are expected to connect to the Amazon MSK cluster or produce and consume from the cluster over a private network in the same VPC. In Docker, how do I clean up volumes/containers/etc that have not been used for X amount of time? Service 'odoo' failed to build from docker, Why docker run saying Unknown operand whilst same shell script runs perfectly in ubuntu machine, What's the mechanism of Inner Load Balancing along with docker swarm v1.12, AWS Launch sample webite in docker on ec2 instance. By clicking Sign up for GitHub, you agree to our terms of service and Note: if. You might get the following error when there is an issue with the key store configuration of the producer leading to the authentication failure: You might get the following error when there is an issue with the key store configuration of the consumer leading to the authentication failure: To resolve this error, be sure that you have correctly configured the key store related configuration. Is there a way to check and clean Certificate Revocation List cache for ASP.NET Core application that is dockerized and run under the Linux? You might get this error when the client tries to connect to the cluster through the Apache ZooKeeper string, and the connection can't be established. Kafka-connect, Bootstrap broker disconnected. Kafka-connect, Bootstrap broker disconnected - Stack Overflow If the nuts and bolts of the protocol are the last thing youre interested in and you just want to write applications with Kafka you should check out Confluent Cloud. (Days, Weeks, Months?). kafkaBootstrap broker localhost:9092 (id: -1 rack: null Why are lights very bright in most passenger trains, especially at night? The current master branch of Cruise Control is compatible with Apache Kafka 2.0, 2.1, 2.2, and 2.3 (i.e. If you access the cluster from outside the VPC, then you might get these errors. * or a 2.0. How do I troubleshoot issues when connecting to my Amazon MSK cluster? | Troubleshoot Connectivity How to troubleshoot connectivity between Kafka clients (Python, Java, Spring, Go, etc.) So after applying these changes to the advertised.listener on each broker and restarting each one of them, the producer and consumer work correctly: The broker metadata is showing now with a hostname that correctly resolves from the client. For the former (trying to access Kafka running locally from a client running in Docker), you have a few options, none of which are particularly pleasant. We and our partners use cookies to Store and/or access information on a device. So far Ive been experimenting with running the connect-framework and the elasticserch-server localy using docker/docker-compose (Confluent docker-image 5.4 with Kafka 2.4) connecting to the remote kafka-installation (Kafka 2.0.1 - actually our production environement). Not the answer you're looking for? Timed out waiting for connection while in state: CONNECTING. This error might also result when the Apache ZooKeeper string is wrong. requiring a consumer), add to your config: If you're also creating a source connector you'll need to replicate the above but for PRODUCER_ too. How to troubleshoot crashes detected by Google Play Store for Flutter app, Cupertino DateTime picker interfering with scroll behaviour. Your email address will not be published. You might get this error under either of the following conditions: If you get this error even though the connectivity of the client or broker was working initially, then the broker might be down. Puzzle: The configured broker is not local, it's BROKER_1.FOO.NET:9094, and it is available. Verify that the Apache ZooKeeper string used is correct. 05:30 AM. I can begin to thank you!!! Your email address will not be published. If you're using non-IAM authentication, then check if you added topic level access control lists (ACLs) that block operations. Also unlike listeners, there can be duplicated ports in this property, so that one listener can be configured to Do profinite groups admit maximal subgroups, Scottish idiom for people talking too much, Creating 8086 binary larger than 64 KiB using NASM or any other assembler. The consent submitted will only be used for data processing originating from this website. In my brokers server.properties, I take this: And change the advertised.listeners configuration thus: The listener itself remains unchanged (it binds to all available NICs, on port 9092). 1 ACCEPTED SOLUTION bgoerlitz Cloudera Employee Created 07-08-2022 11:31 AM These errors on the client side usually indicate a security misconfiguration, and based on the broker log messages you sent, I would guess that you have Kerberos enabled for this cluster ("SASL handshake" suggests kerberos is expected). In practice, youd have a minimum of three brokers in your cluster. org.apache.kafka.common.errors.TimeoutException: Timed out waiting for a node assignment. What happened behind the scene is that after a change is done in Atlas, an event will be produced to Kafka under topic ATLAS_ENTITIES, which will be captured by consumer, which happens to be Ranger Admin service. Also I wouldn't set replication factor to 1 if you have >1 broker available. and The text was updated successfully, but these errors were encountered: The warning message Bootstrap broker XXX (id : -1 rack: null) disconnected comes from here. First, below is my Kafka producer codes. (in both PLAINTEXT & SSL modes). Amazon MSK metrics for monitoring with CloudWatch, Unable to access cluster from within AWS: networking issues. How can I specify different theory levels for different atoms in Gaussian? That means that our client is going to be using localhost to try to connect to a broker when producing and consuming messages. Perhaps thats where your IDE resides, or you just dont want to Docker-ify your client? which the broker binds. Call: createTopics" is a bit more general than just network connectivity. In the final act, how to drop clues without causing players to feel "cheated" they didn't find them sooner? By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Just as importantly, we havent broken Kafka for local (non-Docker) clients as the original 9092 listener still works: Not unless you want your client to randomly stop working each time you deploy it on a machine that you forget to hack the hosts file for. Unable to Connect kafka broker with TLS authetication Enabled The recommended CC versions to use with different versions of Kafka have been updated recently (please see. Lets spin up the client and see what happens: You can see in the metadata returned that even though we successfully connect to the broker initially, it gives us localhost back as the broker host. [KAFKA-10450] console-producer throws Uncaught error in kafka producer With compose yaml you can not define locahost as hostname anymore. If you connect to the broker on 9092, youll get the advertised.listener defined for the listener on that port (localhost). that's set to be localhost/127.0.0.1:9092. Be sure that the correct broker string and port are used. You signed in with another tab or window. An example of data being processed may be a unique identifier stored in a cookie. 07-26-2017 Turns out I was still using "org.apache.kafka.common.security.plain.PlainLoginModule" left over from a previous cluster connection. This post is not able Ranger, but I just want to document on one of the Kafka issue that I faced when I tried to understand how a change from Atlas will be captured by Ranger and then propagated to Ranger plugins for HDFS and Hive etc. As far as the kafka topic containing data for consumption is concerned, there is data in the topic's partition, I have checked in the Kafka broker. or how I should go about to debug it. ), 2022-07-08 12:34:11,776 INFO org.apache.kafka.common.network.Selector: [SocketServer brokerId=88] Failed authentication with /172.31.9.160 (Unexpected Kafka request of type METADATA during SASL handshake. Below, I use a client connecting to Kafka in various permutations of deployment topology. As explained above, however, its the subsequent connections to the host and port returned in the metadata that must also be accessible from your client machine. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Can you share your server.properties for review? This prevents the restriction of replication between the brokers. Flutter change focus color and icon color but not works. I thought logstash and kafka must connect oustide of container. The bootstrap brokers string should contain three brokers from across the Availability Zones in which your MSK cluster is deployed (unless only two brokers are available). Im not on safe grounds (more errors) yet but at least it certainly looks like your comment did the trick. These errors on the client side usually indicate a security misconfiguration, and based on the broker log messages you sent, I would guess that you have Kerberos enabled for this cluster ("SASL handshake" suggests kerberos is expected). We are proud to announce the release of Apache Kafka 3.5.0. when we check the logs of kafka brokers there is: 2022-07-08 12:36:17,365 INFO org.apache.kafka.common.network.Selector: [SocketServer brokerId=89] Failed authentication with /172.31.9.160 (Unexpected Kafka request of type METADATA during SASL handshake. @Daniel Kozlowski - here is the update on the this. to Kafka on Docker, AWS, or any other machine. The path to the truststore file is wrongly configured in the SSL configuration. I have been struggling with this for a week pulling my hairs. Comunication with the brokers seem to work well - the connect-job is communicated back to the kafka as intended and when the connect-framework is restarted the job seem to resume as intended (even though still faulty). Its very simple and just serves to illustrate the connection process. Lets try it out (make sure youve restarted the broker first to pick up these changes): It works! Do large language models know what they are talking about? Alternative for Calendar function in Swift for ubuntu? This release contains many new features and improvements. with -> security.inter.broker.protocol = PLAINTEXT, i'm able to start the Console Producer & consumer and publish & read the messages published. Is the difference between additive groups and multiplicative groups just a matter of notation? Not the answer you're looking for? Yet, the kafkacat results don't seem to make sense. The ConsumerConfig values in the log was: bootstrap.servers = [localhost:9092]. when i start the Console Producer in PLAINTEXT Mode : when i start the Console Producer in SSL Mode : when i describe the topic, i see that the leader is 1001 & Isr has only 1001, It seems setting the parameter -> security.inter.broker.protocol = SSL causes connectivity issues between the Controller (in this case 1001) & the Brokers (1001, 1002, 1003). And of course, on our clients Docker container there is no Kafka broker running at 9092, hence the error. First, create a Dockerfile to include our Python client into a Docker container: Confirm that you have two containers running: one Apache ZooKeeper and one Kafka broker: Note that were creating our own Docker network on which to run these containers, so that we can communicate between them. How to ADD all files/directories except a hidden directory like .git in Dockerfile, Access MONGODB database in windos server from docker executing in WSL2, AWS Elastic Beanstalk Docker container port mapping, docker-compose psql could not connect to server. The magic thing weve done here though is adding a new listener (RMOFF_DOCKER_HACK), which is on a new port. disconnected WARN [Consumer clientId=consumer-console-consumer-47753-1, groupId=console-consumer-47753] Bootstrap broker 127.0.0.1:2181 (id: -1 rack: null) disconnected (org.apache.kafka.clients.NetworkClient) kafkabin/kafka-console-consumer.sh --zookeeper 21819092 zookeeper is not a recognized option Thanks, Find answers, ask questions, and share your expertise, Problem kafka producer - WARN clients.NetworkClient: [Producer clientId=console-producer] Bootstrap broker. Since the Kafka brokers name on the network is broker (inherited from its container name), we need to set this as its advertised listener and change: Mucking about with command line flags for configuration of Docker containers gets kind of gross after a short amount of time. Hack time? Stone-Weierstrass theorem for non-polynomials. The ideas was to modify that once things started to work. 07-25-2017 Sign in Created Thanks in advance. Per docs, you need to also configure security on the consumer/producer for the connector(s) that Kafka Connect is running. Im just running 1 connect-worker for now. By creating a new listener. Rust smart contracts? I'm experiencing issues when I try to connect to my Amazon Managed Streaming for Apache Kafka (Amazon MSK) cluster. Making sure youre in the same folder as the above docker-compose.yml run: Youll see ZooKeeper and the Kafka broker start and then the Python test client: You can find full-blown Docker Compose files for Apache Kafka and Confluent Platform including multiple brokers in this repository. * version of CC -- i.e. 05:08 AM. If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future. If you dont quite believe me, try running this, which checks from within the Docker container if port 9092 on localhost is open: On the Docker host machine, Kafka is up and the port is open: So how do we connect our client to our host? 04:10 AM, Created To get the bootstrap brokers using the API, see GetBootstrapBrokers. Why does awk -F work for most letters, but not for the letter "t"? Follow our guide at https://www.cloudera.com/documentation/kafka/latest/topics/kafka_command_line.html You do this by adding a consumer/producer prefix. 11:52 AM, @yagoaparecidotiHas the reply helped resolve your issue? Thanks for help, everyone. Kafka error after SSL enabled - Bootstrap broker-name :6667 disconnected (org.apache.kafka.clients.NetworkClient). For debugging do this - change the log4j.rootLogger parameter in /etc/kafka/conf/tools-log4j.properties as: Also check if producer works find for PLAINTEXT like: For the testing purpose - use only one broker-node. 07-08-2022 So since you're using Docker, and the error suggests that you were creating a sink connector (i.e. Changing to "org.apache.kafka.common.security.scram.ScramLoginModule" fixed it all immediately. Created kafka:9093. Re-implement the SSL by following up exactly the steps described in here: http://docs.confluent.io/2.0.0/kafka/ssl.html, Find answers, ask questions, and share your expertise. This is the whole point of hostnames and DNS resolutionthey are how machines know how to talk to each other instead of you hardcoding it into each machine individually. Hudi Sink Connector shows broker disconnected - Stack Overflow You've set resourceType=CLUSTER and operation=CLUSTER_ACTION in the ACLs for your cluster. The producer or consumer is unable to connect to the broker host and port. Now lets check the connection to a Kafka broker running on another machine. For this example, Im running Confluent Platform on my local machine, but you can also run this on any other Kafka distribution you care to. Is there a finite abelian group which is not isomorphic to either the additive or multiplicative group of a field? The recommended CC versions to use with different versions of Kafka have been updated recently (please see Environment Requirements) -- would you verify whether you were running a 2.4. When you access the cluster over 9096 port, be sure that the user and password used in AWS Secrets Manager is the same as those in client properties. Its written using Python with librdkafka (confluent_kafka), but the principle applies to clients across all languages. Already on GitHub? 07-26-2017 His particular interests are analytics, systems architecture, performance testing and optimization. 07:02 AM, 1) create SSL certificates, create CA using openSSL, sign the certificates using the CA & import the certificate and the signed certificate into the keystore (Steps shown below), 3) Made changes to server.properties (shared earlier). Developers use AI tools, they just dont trust them (Ep. Making statements based on opinion; back them up with references or personal experience. 07-26-2017 The problem comes when I try to start a connect-job using curl. Outside of work he enjoys drinking good beer and eating fried breakfasts, although generally not at the same time. Solved: Re: Console producer/consumer not working in kafka 07-26-2017 How do I open up this cable box, or remove it entirely? Thanks in advance. By default, itll take the same value as the listener itself. How to access a directory in docker container from host machine. 11:31 AM. 06:21 AM. Note that if you just run docker-compose restart broker, it will restart the container using its existing configuration (and not pick up the ports addition). Well start with the simplest permutation here, and run both Kafka and our client within Docker on the same Docker network. Connect Amazon MSK cluster to on-premises web server? 07:29 PM. So the initial connect actually works, but check out the metadata we get back: localhost:9092. gdalwarp sum resampling algorithm double counting at some specific resolutions, Comic about an AI that equips its robot soldiers with spears and swords. There are two types of connection from your client to the Kafka brokers that must succeed: Robin is a principal developer advocate at Confluent, the company founded by the original creators of Apache Kafka, as well as an Oracle Groundbreaker Ambassador. Follow . Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. 06:16 AM. Omg! Why do most languages use the same token for `EndIf`, `EndWhile`, `EndFunction` and `EndStructure`? How do I connect to my Amazon MSK cluster using the Kafka-Kinesis-Connector? He is correct because I am getting the correct the expected meta-data when using kafkacat: Thanks for contributing an answer to Stack Overflow! Unlike listeners, it is not valid to advertise the To resolve this error, consider doing the following: Connection to node -1 (b-3.testcluster.abc123.c2.kafka.us-east-1.amazonaws.com/10.11.111.123:9096) failed authentication due to: Authentication failed during authentication due to invalid credentials with SASL mechanism SCRAM-SHA-512, org.apache.kafka.common.errors.ClusterAuthorizationException: Request Request(processor=11, connectionId=INTERNAL_IP-INTERNAL_IP-0, session=Session(User:ANONYMOUS,/INTERNAL_IP), listenerName=ListenerName(REPLICATION_SECURE), securityProtocol=SSL, buffer=null) is not authorized. Currently, the error message in the controller.log is same as shared in earlier post. We are seeing the below log statement almost constantly. or how I should go about to debug it. The configured broker is not local, it's BROKER_1.FOO.NET:9094, and it Moreover, the bootstrap server doesn't need to configure advertised.listeners, despite the implication of this article: https://www.confluent.io/blog/kafka-listeners-explained/. Thanks for help, everyone. -servers=ip:port 1 y368769 CC 4.0 BY-SA https://blog.csdn.net/y368769/article/details/112602602 Currently you have JavaScript disabled. Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected You can find the code on GitHub. kafka topictopic kafkakafkatopictopic Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected Connection to node -1 (localhost/127.1:9092) could not . Broker may not be available. I have been struggling with this for a week pulling my hairs. Troubleshoot 403 Access Denied error in Amazon S3, Errors that are not specific to the authentication type of the cluster, Errors that are specific to TLS client authentication, Errors that are specific to AWS Identity and Access Management (IAM) client authentication, Errors that are specific to Simple Authentication and Security Layer/Salted Challenge Response Mechanism (SASL/SCARM) client authentication, To communicate with brokers in a cluster that's set up to use SASL/SCRAM, use the following ports: 9096 for access from within AWS and 9196 for public access, To communicate with brokers in a cluster that's set up to use IAM access control, use the following ports: 9098 for access from within AWS and 9198 for public access. There actually were no application.properties pertaining to kafka. established. If the client machine is able to access the brokers, then there are no connectivity issues. ps: we are managing to list the topics without problem, Created Apache, Apache Kafka, Kafka, and associated open source project names are trademarks of the Apache Software Foundation, Confluent vs. Kafka: Why you need Confluent, Kora, The Apache Kafka Engine, Built for the Cloud, Watch demo: Kafka streaming in 10 minutes, The client then connects to one (or more) of the brokers. Omg! java.io.IOException: keystore password was incorrect. Why isn't Summer Solstice plus and minus 90 days the hottest in Northern Hemisphere? Why did Kirk decide to maroon Khan and his people instead of turning them over to Starfleet? apache kafka - keep getting Node -1 disconnected - Stack Overflow Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected I have a look this articles: Confluent Why Can't I Connect to Kafka? Created > kafkacat -b BROKER_1.FOO.NET:9094 -L I see 4 brokers and (one is the controller) and they're all fully qualified names! Why did only Pinchas (knew how to) respond? How to commit a docker container with null entrypoint? You might get this error when the password for the key store or truststore is incorrect. Remove: - ssl.enabled.protocols=TLSv1.2,TLSv1.1,TLSv1 - ssl.endpoint.identification.algorithm=HTTPS - ssl.secure.random.implementation=SHA1PRNG Anyone have an idea what might be causing this? 1 A simple spring-boot-kafka which consumes from a topic on a network cluster: Errors: Bootstrap broker localhost:9092 (id: -1 rack: null) disconnected Connection to node -1 (localhost/127.1:9092) could not be established. java.lang.OutOfMemoryError: Java heap space. CC running along with 2.0.39 metrics-reporters? Unable to run console consumer using a Kafka broker inside a Docker container, Docker container not exiting when disconnected from a login shell, creationTimestamp: null for Kubernetes replication controller template, How can I connect Flower to the broker RabbitMQ in docker-compose, RabbitMQ Connect Failed: Broker unreachable - Docker image, .net core docker container exited with error code 139 in production because of Null Exception, Kafka broker thinks there are no brokers (not even itself), confluent Kafka consumer stuck after broker restarts, Setting up more than one MQTT broker with Docker, jmx exporter inside Confluent Kafka broker container, Python mqtt client in a test docker container connecting to mqtt broker docker container, docker stack deploy, restart_policy, delete exited containers. 06:08 AM. Thank you for your comment. If you need your cluster to support these ACLs while using the SASL/SCRAM authentication, then you must grant the permissions for ALL operations to the ANONYMOUS user. 1 ACCEPTED SOLUTION Harsh J Master Guru Created 11-23-2018 08:52 AM Your port for broker is incorrect in that command, you're supplying the ZooKeeper port of 2181 in an argument that requires the Broker client port of 9092. For information on troubleshooting errors when the client is in the same VPC as the cluster, see. So, for example, when you ask code in a Docker container to connect to localhost, it will be connecting to itself and not the host machine on which you are running it. kafka topictopickafkakafkatopictopicBootstrap broker localhost:9092 (id: -1 rack: null) disconnectedConnection to node -1 (localhost/127.1:9092) could not be establi Is Linux swap still needed with Ubuntu 22.04, Looking for advice repairing granite stair tiles. Check out our newest addition to the community, the, Cloudera Streaming Analytics (CSA) 1.10 introduces new built-in widget for data visualization and has been rebased onto Apache Flink 1.16, CDP Public Cloud: June 2023 Release Summary, Cloudera Data Engineering (CDE) 1.19 in Public Cloud introduces interactive Spark development sessions, Cloudera DataFlow 2.5 supports latest NiFi version, new flow metric based auto-scaling, new Designer capabilities and in-place upgrades are now GA, Cloudera Operational Database (COD) provides UI enhancements to the Scale option while creating an operational database. All rights reserved. 08:46 AM, we are using kafka 2.2.1 in cloudera manager with cdh6.3.2, kafka-console-producer --broker-list ip-172-31-13-30.us-east-2.compute.internal:9092,ip-172-31-12-151.us-east-2.compute.internal:9092,ip-172-31-14-136.us-east-2.compute.internal:9092 --topic test_topic, 22/07/08 12:36:16 WARN clients.NetworkClient: [Producer clientId=console-producer] Bootstrap broker ip-172-31-14-136.us-east-2.compute.internal:9092 (id: -3 rack: null) disconnected22/07/08 12:36:16 WARN clients.NetworkClient: [Producer clientId=console-producer] Bootstrap broker ip-172-31-12-151.us-east-2.compute.internal:9092 (id: -2 rack: null) disconnected22/07/08 12:36:16 WARN clients.NetworkClient: [Producer clientId=console-producer] Bootstrap broker ip-172-31-13-30.us-east-2.compute.internal:9092 (id: -1 rack: null) disconnected. 586), Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Testing native, sponsored banner ads on Stack Overflow (starting July 6), Temporary policy: Generative AI (e.g., ChatGPT) is banned, Kafka connect error when trying to use multiple listeners for kafka server, confluent kafka s3 connector worker failed in connecting to kafka authenticated by krb5, o.apache.kafka.clients.NetworkClient - Bootstrap broker :9092 disconnected, Confluent kafkarest ERROR Server died unexpectedly Atleast one of bootstrap.servers or zookeeper.connect needs to be configured, Kafka Manager not able to connect to brokers, kafka bootstrap broker disconnected using docker-compose, Apache Kafka: bootstrap-server is not a recognized option, Kafka connect cannot find broker in docker.

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