Hi, 

Here is how to config looks like:

############################# Socket Server Settings 
#############################
listeners=PLAINTEXT://:9092
#       advertised.listeners=193.135.9.23:9092



To connect using localhost is just a test, I need to connect via IP-Adress and 
Port only. Could you tell me what's the correct config will look like?

Kind regards, 
Sebastian


-----Ursprüngliche Nachricht-----
Von: Ricardo Ferreira [mailto:rifer...@riferrei.com] 
Gesendet: Wednesday, 8 July 2020 16:20
An: s.schabb...@fluent-software.de; users@kafka.apache.org
Betreff: Re: AW: Problem with replication?!

Hi Sebastian,

Something you can investigate here is which value has been set to the 
configuration property `advertised.listeners`. Your client is trying to 
establish a connection over the 9092 port using the `127.0.0.1` interface. 
Check if this is a valid listener for the Kafka broker.

Thanks,

-- Ricardo

On 7/8/20 7:14 AM, s.schabb...@fluent-software.de wrote:
>
> Hi,
>
> Al right, I am running kafka from an Debian Linux operating system – 
> no docker images are involved. I just can exclude any problems with my 
> producer application – the following command fails too:
>
> /home/kafka/kafka/bin/kafka-topics.sh --list --bootstrap-server
> 127.0.0.1:9092
>
> Error while executing topic command : 
> org.apache.kafka.common.errors.TimeoutException: 
> Call(callName=listTopics, deadlineMs=1594206614222) timed out at
> 1594206614223 after 1 attempt(s)
>
> [2020-07-08 13:10:14,227] ERROR
> java.util.concurrent.ExecutionException: 
> org.apache.kafka.common.errors.TimeoutException: 
> Call(callName=listTopics, deadlineMs=1594206614222) timed out at
> 1594206614223 after 1 attempt(s)
>
>         at
> org.apache.kafka.common.internals.KafkaFutureImpl.wrapAndThrow(KafkaFu
> tureImpl.java:45)
>
>         at
> org.apache.kafka.common.internals.KafkaFutureImpl.access$000(KafkaFutu
> reImpl.java:32)
>
>         at
> org.apache.kafka.common.internals.KafkaFutureImpl$SingleWaiter.await(K
> afkaFutureImpl.java:89)
>
>         at
> org.apache.kafka.common.internals.KafkaFutureImpl.get(KafkaFutureImpl.
> java:260)
>
>         at
> kafka.admin.TopicCommand$AdminClientTopicService.getTopics(TopicComman
> d.scala:333)
>
>         at
> kafka.admin.TopicCommand$AdminClientTopicService.listTopics(TopicComma
> nd.scala:252)
>
>         at kafka.admin.TopicCommand$.main(TopicCommand.scala:66)
>
>         at kafka.admin.TopicCommand.main(TopicCommand.scala)
>
> Caused by: org.apache.kafka.common.errors.TimeoutException: 
> Call(callName=listTopics, deadlineMs=1594206614222) timed out at
> 1594206614223 after 1 attempt(s)
>
> Caused by: org.apache.kafka.common.errors.TimeoutException: Timed out 
> waiting for a node assignment.
>
> (kafka.admin.TopicCommand$)
>
> This means, that there is a connection problem with the client, 
> supporting what you had said. I just deactivated the firewall (ufw in 
> this case), but it does not look better.
>
> Could you please suggest any options for further investigations?
>
> Is there any logging that could help?
>
> In the kafka log I found the following exception:
>
> 2020-07-08 13:09:33,066] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 0ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:09:39,072] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:09:45,075] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:09:51,079] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 0ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:09:57,085] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:03,088] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:09,092] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:14,239] DEBUG [SocketServer brokerId=1] Connection 
> with /127.0.0.1 disconnected 
> (org.apache.kafka.common.network.Selector)
>
> java.io.EOFException
>
>         at
> org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive
> .java:97)
>
>         at
> org.apache.kafka.common.network.KafkaChannel.receive(KafkaChannel.java
> :448)
>
>         at
> org.apache.kafka.common.network.KafkaChannel.read(KafkaChannel.java:39
> 8)
>
>         at
> org.apache.kafka.common.network.Selector.attemptRead(Selector.java:678
> )
>
>         at
> org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.ja
> va:580)
>
>         at
> org.apache.kafka.common.network.Selector.poll(Selector.java:485)
>
>         at kafka.network.Processor.poll(SocketServer.scala:861)
>
>         at kafka.network.Processor.run(SocketServer.scala:760)
>
>         at java.lang.Thread.run(Thread.java:748)
>
> [2020-07-08 13:10:15,096] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:21,099] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:27,104] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:33,108] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:39,112] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:45,115] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:51,120] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:10:57,124] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:03,131] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:09,136] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:15,140] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:21,144] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:27,148] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:33,152] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:39,155] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:45,162] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:51,168] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:11:57,172] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:03,175] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:09,181] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:15,187] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:21,193] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:27,199] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 0ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:33,204] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:39,207] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:45,212] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:51,216] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:12:57,220] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:13:03,226] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:13:09,231] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:13:15,236] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:13:21,240] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:13:27,246] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> [2020-07-08 13:13:33,251] DEBUG Got ping response for sessionid: 
> 0x100003f85c80023 after 1ms (org.apache.zookeeper.ClientCnxn)
>
> Kind regards,
>
> Sebastian
>
> *Von:*Ricardo Ferreira <rifer...@riferrei.com>
> *Gesendet:* Dienstag, 7. Juli 2020 17:58
> *An:* users@kafka.apache.org; s.schabb...@fluent-software.de
> *Betreff:* Re: Problem with replication?!
>
> Given the stack trace you've shared below I can tell that this *is not 
> a replication issue* but rather -- your producer is not being able to 
> write records into the partitions because the brokers that host them 
> are unavailable. Now, I know that they are indeed running so 
> "unavailable" here means that from the network perspective your client 
> app is not being able to establish a TCP connection with them.
>
> Firewall is something you should look into, as well as SELinux, and 
> Docker networking (if this is running on Docker).
>
> Thanks,
>
> -- Ricardo
>
> On 7/6/20 10:37 AM, s.schabb...@fluent-software.de 
> <mailto:s.schabb...@fluent-software.de> wrote:
>
>     Hi there,
>
>       
>
>     I just have a problem with my kafka brokers, maybe a firewall issue, but 
> I don’t know. I have got 3 Brokers at three different Servers (each with 
> another IP) and on the first server running zookeeper:
>
>       
>
>     Server1:9092 (zookeeper:2182)
>
>     Server2:9092
>
>     Server3:9092
>
>       
>
>     And I have got a topic with a replication factor of three. If I try to 
> publish new messages to that topic, I got the following error:
>
>       
>
>     Confluent.Kafka.ProduceException`2[System.Byte[],System.String]: 
> Local: Message timed out
>
>         at Confluent.Kafka.Producer`2.ProduceAsync(TopicPartition 
> topicPartition, Message`2 message, CancellationToken 
> cancellationToken)
>
>         at 
> FluentSoftware.EventSourcing.KafkaProducerEventPublisher.PublishEvents
> [TEvent](String topic, IEnumerable`1 eventsToApply)
>
>         at 
> FluentSoftware.EventSourcing.CommandBus.SendAsync[TCommand](TCommand 
> command)
>
>         at 
> Heliprinter.Mediator.Communication.OrderService.Controllers.OrderContr
> oller.Post(PostOrderViewModel newOrder) in 
> C:\agent\_work\15\s\Source\Services\Heliprinter.Mediator.Communication
> .OrderService\Controllers\OrderController.cs:line 55
>
>       
>
>     and the REST API responses with an Gateway timeout. Could anyone 
> tell me
>
>       
>
>     * If this error could be an replication issue?
>
>     * How I can debug these issue?
>
>     * And where I can find replication details in the logs?
>
>       
>
>     Kind regards,
>
>     Sebastian.
>
>       
>

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