Apacha Kafka Java producer and consumer

HOWTO 

• Producer https://github.com/dveselka/kafka-producer
• Consumer https://github.com/dveselka/kafka-consumer

 Java producer code

package dave;

import java.util.Properties;

import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.common.serialization.StringSerializer;

public class SimpleProducer {
    public static void main(String args[])
    {
        String bootstrapServers="127.0.0.1:9092";
        Properties properties=new Properties();
        properties.setProperty(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        properties.setProperty(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());
        properties.setProperty(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName());

        KafkaProducer<String,String> producer = new KafkaProducer<String, String>(properties);

        ProducerRecord<String, String> record = new ProducerRecord<String, String>("topic", "Hello");
        producer.send(record);
        producer.flush();
        producer.close();
    }
}

CLI start

$ mvn exec:java -Dexec.mainClass="dave.SimpleProducer"

Java consumer code

package dave;

import java.util.Arrays;
import java.time.Duration;
import java.util.Properties;

import org.apache.kafka.clients.consumer.KafkaConsumer;
import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.common.serialization.StringDeserializer;

public class SimpleConsumer {
    public static void main(String args[])
    {
        String bootstrapServers="127.0.0.1:9092";
        String group_id="my_consumer_group";
        String topic="topic";

        Properties properties=new Properties();
        properties.setProperty(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        properties.setProperty(ConsumerConfig.GROUP_ID_CONFIG, group_id);
        properties.setProperty(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());
        properties.setProperty(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName());
        properties.setProperty(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");

        KafkaConsumer<String,String> consumer= new KafkaConsumer<String,String>(properties);
        consumer.subscribe(Arrays.asList(topic));

        while(true) {
            ConsumerRecords<String,String> records=consumer.poll(Duration.ofMillis(100));
            for(ConsumerRecord<String,String> record: records){
                System.out.println("Key: "+ record.key() + ", Value:" +record.value());
                System.out.println("Partition:" + record.partition()+",Offset:"+record.offset());
            }
        }
    }
}

CLI start

 mvn exec:java -Dexec.mainClass="dave.SimpleConsumer"

Apache Kafka Connect

 HOWTO

• https://docs.confluent.io/platform/current/connect/kafka_connectors.html
• https://www.confluent.io/product/connectors/
• JDBC source/sink connector https://www.confluent.io/hub/confluentinc/kafka-connect-jdbc
• https://www.baeldung.com/kafka-connectors-guide

Check plugin.path

config/connect-standalone.properties

plugin.path=libs/

File connector

$ bin/connect-standalone.sh config/connect-standalone.properties config/connect-file-sink.properties

file connector config

name=local-file-sink
connector.class=FileStreamSink
tasks.max=1
file=test.sink.txt
topics=connect-test
key.converter=org.apache.kafka.connect.storage.StringConverter
value.converter=org.apache.kafka.connect.storage.StringConverter
key.converter.schemas.enable=false
value.converter.schemas.enable=false

JSON connector

name=local-file-sink
connector.class=FileStreamSink
tasks.max=1
file=test.sink.txt
topics=connect-test
key.converter=org.apache.kafka.connect.json.JsonConverter
value.converter=org.apache.kafka.connect.json.JsonConverter
key.converter.schemas.enable=false
value.converter.schemas.enable=false

Apacha Kafka Partition replications

HOWTO 

• https://docs.confluent.io/kafka/design/replication.html
  

 Partition replications 

Topic with one partition that is replicated 3 times

$ bin/kafka-topics.sh --bootstrap-server localhost:9094 --create --topic test_topic_2 --replication-factor 3
WARNING: Due to limitations in metric names, topics with a period ('.') or underscore ('_') could collide. To avoid issues it is best to use either, but not both.
Created topic test_topic_2.
[dave@dave kafka_2.12-3.5.1]$ bin/kafka-topics.sh --bootstrap-server localhost:9094 --describe --topic test_topic_2
Topic: test_topic_2    TopicId: q-EXSFY7RCq3RpSDblxW9Q    PartitionCount: 1    ReplicationFactor: 3    Configs: 
    Topic: test_topic_2    Partition: 0    Leader: 103    Replicas: 103,102,106    Isr: 103,102,106

server log

[2023-10-10 10:33:55,854] WARN [ReplicaFetcher replicaId=106, leaderId=103, fetcherId=0] Received UNKNOWN_TOPIC_ID from the leader for partition test_topic_2-0. This error may be returned transiently when the partition is being created or deleted, but it is not expected to persist. (kafka.server.ReplicaFetcherThread)

Topic with three partitions that are replicated

$ bin/kafka-topics.sh --bootstrap-server localhost:9094 --create --topic test_topic_3 --replication-factor 3 --partitions 3
WARNING: Due to limitations in metric names, topics with a period ('.') or underscore ('_') could collide. To avoid issues it is best to use either, but not both.
Created topic test_topic_3.

$ bin/kafka-topics.sh --bootstrap-server localhost:9094 --describe --topic test_topic_3
Topic: test_topic_3    TopicId: lMuEiHIXSZGtJnSkdxSdUg    PartitionCount: 3    ReplicationFactor: 3    Configs: 
    Topic: test_topic_3    Partition: 0    Leader: 106    Replicas: 106,103,102    Isr: 106,103,102
    Topic: test_topic_3    Partition: 1    Leader: 103    Replicas: 103,102,106    Isr: 103,102,106
    Topic: test_topic_3    Partition: 2    Leader: 102    Replicas: 102,106,103    Isr: 102,106,103

Kafka logs

$ ls  -lt /app/kafka/logs2/
total 32
-rw-r--r--. 1 dave dave  72 Oct 10 10:41 replication-offset-checkpoint
-rw-r--r--. 1 dave dave   4 Oct 10 10:40 log-start-offset-checkpoint
-rw-r--r--. 1 dave dave  72 Oct 10 10:40 recovery-point-offset-checkpoint
drwxr-xr-x. 1 dave dave 242 Oct 10 10:37 test_topic_3-0
drwxr-xr-x. 1 dave dave 242 Oct 10 10:37 test_topic_3-1
drwxr-xr-x. 1 dave dave 242 Oct 10 10:37 test_topic_3-2
drwxr-xr-x. 1 dave dave 242 Oct 10 10:33 test_topic_2-0
-rw-r--r--. 1 dave dave  91 Oct 10 10:04 meta.properties
-rw-r--r--. 1 dave dave   0 Oct 10 09:53 cleaner-offset-checkpoint

Specify replica assignments

$ bin/kafka-topics.sh --bootstrap-server localhost:9094 --create --topic test_topic_4 --replica-assignment 102:103,103:106
WARNING: Due to limitations in metric names, topics with a period ('.') or underscore ('_') could collide. To avoid issues it is best to use either, but not both.
[dave@dave kafka_2.12-3.5.1]$ bin/kafka-topics.sh --bootstrap-server localhost:9094 --create --topic test_topic_5 --replica-assignment 102:103:106
WARNING: Due to limitations in metric names, topics with a period ('.') or underscore ('_') could collide. To avoid issues it is best to use either, but not both.
Created topic test_topic_5.

describe topic

$ bin/kafka-topics.sh --bootstrap-server localhost:9094 --describe --topic test_topic_3
Topic: test_topic_3    TopicId: lMuEiHIXSZGtJnSkdxSdUg    PartitionCount: 3    ReplicationFactor: 3    Configs: 
    Topic: test_topic_3    Partition: 0    Leader: 106    Replicas: 106,103,102    Isr: 106,103,102
    Topic: test_topic_3    Partition: 1    Leader: 103    Replicas: 103,102,106    Isr: 103,102,106
    Topic: test_topic_3    Partition: 2    Leader: 102    Replicas: 102,106,103    Isr: 102,106,103

Apacha Kafka list active brokers

HOWTO

•    https://www.baeldung.com/ops/kafka-list-active-brokers-in-cluster

$ ./bin/zookeeper-shell.sh localhost:2181 ls /brokers/ids
Connecting to localhost:2181

WATCHER::

WatchedEvent state:SyncConnected type:None path:null
[102, 103, 106]

Server config - broker.id

$ grep broker.id config/server*
config/server1.properties:broker.id=106
config/server2.properties:broker.id=102
config/server3.properties:broker.id=103

JPS

$ jps -l
20116 kafka.Kafka
19685 kafka.Kafka
22633 jdk.jcmd/sun.tools.jps.Jps
20538 kafka.Kafka
18650 org.apache.zookeeper.server.quorum.QuorumPeerMain

Apache Kafka CLI kcat

 HOWTO

• https://github.com/edenhill/kcat
• https://docs.confluent.io/platform/current/tools/kafkacat-usage.html

Install kcat

$ sudo dnf install kafkacat
[sudo] password for dave: 
Last metadata expiration check: 0:30:11 ago on Tue 10 Oct 2023 08:36:11 AM CEST.
Dependencies resolved.
=================================================================================================================================================
 Package                            Architecture                   Version                                 Repository                       Size
=================================================================================================================================================
Installing:
 kcat                               x86_64                         1.7.1-1.fc37                            updates                          39 k
Installing dependencies:
 librdkafka                         x86_64                         1.6.1-5.fc37                            fedora                          662 k

Transaction Summary
=================================================================================================================================================
Install  2 Packages

Total download size: 701 k
Installed size: 2.1 M
Is this ok [y/N]: y
Downloading Packages:
(1/2): kcat-1.7.1-1.fc37.x86_64.rpm                                                                              192 kB/s |  39 kB     00:00    
(2/2): librdkafka-1.6.1-5.fc37.x86_64.rpm                                                                        2.8 MB/s | 662 kB     00:00    
-------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                            1.0 MB/s | 701 kB     00:00     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                                                                         1/1 
  Installing       : librdkafka-1.6.1-5.fc37.x86_64                                                                                          1/2 
  Installing       : kcat-1.7.1-1.fc37.x86_64                                                                                                2/2 
  Running scriptlet: kcat-1.7.1-1.fc37.x86_64                                                                                                2/2 
  Verifying        : librdkafka-1.6.1-5.fc37.x86_64                                                                                          1/2 
  Verifying        : kcat-1.7.1-1.fc37.x86_64                                                                                                2/2 

Installed:
  kcat-1.7.1-1.fc37.x86_64                                             librdkafka-1.6.1-5.fc37.x86_64                                            

Complete!
[dave@dave go]$ which kcat
/usr/bin/kcat

list server state

$ kcat -b localhost:9094 -L
Metadata for all topics (from broker -1: localhost:9094/bootstrap):
 3 brokers:
  broker 106 at dave:9096 (controller)
  broker 103 at dave:9095
  broker 102 at dave:9094
 7 topics:
  topic "test_topic_5" with 1 partitions:
    partition 0, leader 102, replicas: 102,103,106, isrs: 102,103,106
  topic "test1" with 1 partitions:
    partition 0, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
  topic "test_topic_2" with 1 partitions:
    partition 0, leader 103, replicas: 103,102,106, isrs: 103,102,106
  topic "__consumer_offsets" with 50 partitions:
    partition 0, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 1, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 2, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 3, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 4, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 5, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 6, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 7, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 8, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 9, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 10, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 11, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 12, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 13, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 14, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 15, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 16, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 17, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 18, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 19, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 20, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 21, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 22, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 23, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 24, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 25, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 26, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 27, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 28, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 29, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 30, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 31, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 32, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 33, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 34, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 35, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 36, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 37, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 38, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 39, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 40, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 41, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 42, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 43, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 44, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 45, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 46, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 47, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 48, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
    partition 49, leader -1, replicas: 100, isrs: 100, Broker: Leader not available
  topic "test_topic_3" with 3 partitions:
    partition 0, leader 106, replicas: 106,103,102, isrs: 106,103,102
    partition 1, leader 103, replicas: 103,102,106, isrs: 103,102,106
    partition 2, leader 102, replicas: 102,106,103, isrs: 102,106,103
  topic "test_topic_4" with 2 partitions:
    partition 0, leader 102, replicas: 102,103, isrs: 102,103
    partition 1, leader 103, replicas: 103,106, isrs: 103,106
  topic "T3" with 1 partitions:
    partition 0, leader -1, replicas: 100, isrs: 100, Broker: Leader not available

Kafka producer and consumer

 HOWTO

• Kafka CLI https://docs.confluent.io/kafka/operations-tools/kafka-tools.html
• kcli https://github.com/cswank/kcli
• kcat https://github.com/edenhill/kcat

 

 

Kafka producer

 bin/kafka-console-producer.sh --bootstrap-server=localhost:9092 --topic=test1 
>Hi from dave
[2023-10-09 14:29:27,126] WARN [Producer clientId=console-producer] Error while fetching metadata with correlation id 4 : {test1=LEADER_NOT_AVAILABLE} (org.apache.kafka.clients.NetworkClient)
[2023-10-09 14:29:27,231] WARN [Producer clientId=console-producer] Error while fetching metadata with correlation id 5 : {test1=LEADER_NOT_AVAILABLE} (org.apache.kafka.clients.NetworkClient)
>dave
>dave

Server logs

[2023-10-09 13:52:42,475] INFO [MetadataCache brokerId=0] Updated cache from existing <empty> to latest FinalizedFeaturesAndEpoch(features=Map(), epoch=0). (kafka.server.metadata.ZkMetadataCache)
[2023-10-09 13:52:42,479] INFO [TransactionCoordinator id=0] Starting up. (kafka.coordinator.transaction.TransactionCoordinator)
[2023-10-09 13:52:42,483] INFO [TxnMarkerSenderThread-0]: Starting (kafka.coordinator.transaction.TransactionMarkerChannelManager)
[2023-10-09 13:52:42,483] INFO [TransactionCoordinator id=0] Startup complete. (kafka.coordinator.transaction.TransactionCoordinator)
[2023-10-09 13:52:42,542] INFO [ExpirationReaper-0-AlterAcls]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2023-10-09 13:52:42,566] INFO [Controller id=0, targetBrokerId=0] Node 0 disconnected. (org.apache.kafka.clients.NetworkClient)
[2023-10-09 13:52:42,570] WARN [Controller id=0, targetBrokerId=0] Connection to node 0 (dave/192.168.0.115:9092) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)
[2023-10-09 13:52:42,575] INFO [Controller id=0, targetBrokerId=0] Client requested connection close from node 0 (org.apache.kafka.clients.NetworkClient)
[2023-10-09 13:52:42,580] INFO [/config/changes-event-process-thread]: Starting (kafka.common.ZkNodeChangeNotificationListener$ChangeEventProcessThread)
[2023-10-09 13:52:42,603] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Enabling request processing. (kafka.network.SocketServer)
[2023-10-09 13:52:42,608] INFO Awaiting socket connections on 0.0.0.0:9092. (kafka.network.DataPlaneAcceptor)
[2023-10-09 13:52:42,650] INFO Kafka version: 3.5.1 (org.apache.kafka.common.utils.AppInfoParser)
[2023-10-09 13:52:42,650] INFO Kafka commitId: 2c6fb6c54472e90a (org.apache.kafka.common.utils.AppInfoParser)
[2023-10-09 13:52:42,650] INFO Kafka startTimeMs: 1696852362645 (org.apache.kafka.common.utils.AppInfoParser)
[2023-10-09 13:52:42,652] INFO [KafkaServer id=0] started (kafka.server.KafkaServer)
[2023-10-09 13:52:42,756] INFO [zk-broker-0-to-controller-forwarding-channel-manager]: Recorded new controller, from now on will use node dave:9092 (id: 0 rack: null) (kafka.server.BrokerToControllerRequestThread)
[2023-10-09 13:52:42,833] INFO [zk-broker-0-to-controller-alter-partition-channel-manager]: Recorded new controller, from now on will use node dave:9092 (id: 0 rack: null) (kafka.server.BrokerToControllerRequestThread)
[2023-10-09 14:29:27,102] INFO Creating topic test1 with configuration {} and initial partition assignment Map(0 -> ArrayBuffer(0)) (kafka.zk.AdminZkClient)
[2023-10-09 14:29:27,170] INFO [Controller id=0, targetBrokerId=0] Node 0 disconnected. (org.apache.kafka.clients.NetworkClient)
[2023-10-09 14:29:27,200] INFO [ReplicaFetcherManager on broker 0] Removed fetcher for partitions Set(test1-0) (kafka.server.ReplicaFetcherManager)
[2023-10-09 14:29:27,260] INFO [LogLoader partition=test1-0, dir=/app/kafka/logs] Loading producer state till offset 0 with message format version 2 (kafka.log.UnifiedLog$)
[2023-10-09 14:29:27,278] INFO Created log for partition test1-0 in /app/kafka/logs/test1-0 with properties {} (kafka.log.LogManager)
[2023-10-09 14:29:27,279] INFO [Partition test1-0 broker=0] No checkpointed highwatermark is found for partition test1-0 (kafka.cluster.Partition)
[2023-10-09 14:29:27,281] INFO [Partition test1-0 broker=0] Log loaded for partition test1-0 with initial high watermark 0 (kafka.cluster.Partition)

Kafka consumer

$ bin/kafka-console-consumer.sh --bootstrap-server=localhost:9092 --topic=test1  
aa
bb

Kafka

]$ ls -l /app/kafka/logs/
total 220
-rw-r--r--. 1 dave dave    0 Oct  9 13:52 cleaner-offset-checkpoint
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-0
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-1
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-10
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-11
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-12
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-13
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-14
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-15
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-16
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-17
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-18
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-19
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-2
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-20
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-21
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-22
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-23
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-24
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-25
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-26
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-27
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-28
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-29
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-3
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-30
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-31
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-32
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-33
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-34
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-35
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-36
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-37
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-38
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-39
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-4
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-40
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-41
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-42
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-43
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-44
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-45
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-46
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-47
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-48
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-49
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-5
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-6
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-7
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-8
drwxr-xr-x. 1 dave dave  242 Oct  9 14:35 __consumer_offsets-9
-rw-r--r--. 1 dave dave    4 Oct  9 14:37 log-start-offset-checkpoint
-rw-r--r--. 1 dave dave   89 Oct  9 13:52 meta.properties
-rw-r--r--. 1 dave dave 1205 Oct  9 14:37 recovery-point-offset-checkpoint
-rw-r--r--. 1 dave dave 1205 Oct  9 14:38 replication-offset-checkpoint
drwxr-xr-x. 1 dave dave  242 Oct  9 14:29 test1-0

topic test-1

$ ls -l /app/kafka/logs/test1-0/
total 12
-rw-r--r--. 1 dave dave 10485760 Oct  9 14:29 00000000000000000000.index
-rw-r--r--. 1 dave dave      364 Oct  9 14:35 00000000000000000000.log
-rw-r--r--. 1 dave dave 10485756 Oct  9 14:29 00000000000000000000.timeindex
-rw-r--r--. 1 dave dave        8 Oct  9 14:29 leader-epoch-checkpoint
-rw-r--r--. 1 dave dave       43 Oct  9 14:29 partition.metadata

Consumer group

 bin/kafka-consumer-groups.sh --bootstrap-server localhost:9092 --describe --group skupina1

GROUP           TOPIC           PARTITION  CURRENT-OFFSET  LOG-END-OFFSET  LAG             CONSUMER-ID                                           HOST            CLIENT-ID
skupina1        T3              0          76              76              0               console-consumer-0b468664-6bfe-4185-ac0f-cc27d6dd857a /192.168.0.115  console-consumer

list groups

 bin/kafka-consumer-groups.sh --bootstrap-server localhost:9092 --list
skupina1
skupina2

Kafka shells

Install Apache Kafka on Linux Fedora

HOWTO

• https://kafka.apache.org/downloads
• https://kafka.apache.org/ 
• Books https://kafka.apache.org/books-and-papers
• Definitive guide https://www.confluent.io/resources/kafka-the-definitive-guide/
• https://www.enterpriseintegrationpatterns.com/
• https://www.kai-waehner.de/blog/2019/03/07/apache-kafka-middleware-mq-etl-esb-comparison/
• https://www.confluent.io/hub/?_ga=2.197519912.642206306.1675149141-1201563621.1675149140
• https://www.confluent.io/hub/confluentinc/kafka-connect-jdbc/
• https://youtu.be/Jkcp28ki82k?si=elX7OiMEQCTLWHj4
• https://hevodata.com/learn/kafka-queue/
• https://aws.amazon.com/msk/what-is-kafka/
• https://abhyrama.com/2019/06/25/kafka-is-not-a-queue/
• https://www.crowdstrike.com/blog/how-we-improved-scale-and-reliability-by-sharding-kafka/
• https://cwiki.apache.org/confluence/display/KAFKA/Clients
   

 

Download from https://kafka.apache.org/downloads 

 

Start zookeeper

[dave@dave kafka_2.12-3.5.1]$ bin/zookeeper-server-start.sh config/zookeeper.properties 
[2023-10-09 13:18:51,465] INFO Reading configuration from: config/zookeeper.properties (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,466] WARN config/zookeeper.properties is relative. Prepend ./ to indicate that you're sure! (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,472] INFO clientPortAddress is 0.0.0.0:2181 (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,472] INFO secureClientPort is not set (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,473] INFO observerMasterPort is not set (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,473] INFO metricsProvider.className is org.apache.zookeeper.metrics.impl.DefaultMetricsProvider (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,475] INFO autopurge.snapRetainCount set to 3 (org.apache.zookeeper.server.DatadirCleanupManager)
[2023-10-09 13:18:51,475] INFO autopurge.purgeInterval set to 0 (org.apache.zookeeper.server.DatadirCleanupManager)
[2023-10-09 13:18:51,475] INFO Purge task is not scheduled. (org.apache.zookeeper.server.DatadirCleanupManager)
[2023-10-09 13:18:51,475] WARN Either no config or no quorum defined in config, running in standalone mode (org.apache.zookeeper.server.quorum.QuorumPeerMain)
[2023-10-09 13:18:51,476] INFO Log4j 1.2 jmx support not found; jmx disabled. (org.apache.zookeeper.jmx.ManagedUtil)
[2023-10-09 13:18:51,477] INFO Reading configuration from: config/zookeeper.properties (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,477] WARN config/zookeeper.properties is relative. Prepend ./ to indicate that you're sure! (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,477] INFO clientPortAddress is 0.0.0.0:2181 (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,477] INFO secureClientPort is not set (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,477] INFO observerMasterPort is not set (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,477] INFO metricsProvider.className is org.apache.zookeeper.metrics.impl.DefaultMetricsProvider (org.apache.zookeeper.server.quorum.QuorumPeerConfig)
[2023-10-09 13:18:51,477] INFO Starting server (org.apache.zookeeper.server.ZooKeeperServerMain)
[2023-10-09 13:18:51,490] INFO ServerMetrics initialized with provider org.apache.zookeeper.metrics.impl.DefaultMetricsProvider@2abf4075 (org.apache.zookeeper.server.ServerMetrics)
[2023-10-09 13:18:51,493] INFO zookeeper.snapshot.trust.empty : false (org.apache.zookeeper.server.persistence.FileTxnSnapLog)
[2023-10-09 13:18:51,506] INFO  (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,506] INFO   ______                  _                                           (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,506] INFO  |___  /                 | |                                          (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,507] INFO     / /    ___     ___   | | __   ___    ___   _ __     ___   _ __    (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,507] INFO    / /    / _ \   / _ \  | |/ /  / _ \  / _ \ | '_ \   / _ \ | '__| (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,507] INFO   / /__  | (_) | | (_) | |   <  |  __/ |  __/ | |_) | |  __/ | |     (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,507] INFO  /_____|  \___/   \___/  |_|\_\  \___|  \___| | .__/   \___| |_| (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,507] INFO                                               | |                      (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,507] INFO                                               |_|                      (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,507] INFO  (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,508] INFO Server environment:zookeeper.version=3.6.4--d65253dcf68e9097c6e95a126463fd5fdeb4521c, built on 12/18/2022 18:10 GMT (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,508] INFO Server environment:host.name=dave (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,508] INFO Server environment:java.version=11.0.16.1 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,508] INFO Server environment:java.vendor=Oracle Corporation (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,508] INFO Server environment:java.home=/usr/java/jdk-11.0.16.1 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,508] INFO Server environment:java.class.path=/app/kafka/kafka_2.12-3.5.1/bin/../libs/activation-1.1.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/aopalliance-repackaged-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/argparse4j-0.7.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/audience-annotations-0.13.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/commons-cli-1.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/commons-lang3-3.8.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-api-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-basic-auth-extension-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-json-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-mirror-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-mirror-client-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-runtime-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-transforms-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/hk2-api-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/hk2-locator-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/hk2-utils-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-annotations-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-core-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-databind-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-dataformat-csv-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-datatype-jdk8-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-jaxrs-base-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-jaxrs-json-provider-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-module-jaxb-annotations-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-module-scala_2.12-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.activation-api-1.2.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.annotation-api-1.3.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.inject-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.validation-api-2.0.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.ws.rs-api-2.1.6.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.xml.bind-api-2.3.3.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javassist-3.29.2-GA.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.activation-api-1.2.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.annotation-api-1.3.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.servlet-api-3.1.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.ws.rs-api-2.1.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jaxb-api-2.3.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-client-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-common-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-container-servlet-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-container-servlet-core-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-hk2-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-server-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-client-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-continuation-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-http-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-io-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-security-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-server-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-servlet-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-servlets-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-util-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-util-ajax-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jline-3.22.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jopt-simple-5.0.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jose4j-0.9.3.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka_2.12-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-clients-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-group-coordinator-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-log4j-appender-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-metadata-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-raft-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-server-common-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-shell-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-storage-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-storage-api-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-examples-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-scala_2.12-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-test-utils-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-tools-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-tools-api-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/lz4-java-1.8.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/maven-artifact-3.8.8.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/metrics-core-2.2.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/metrics-core-4.1.12.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-buffer-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-codec-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-common-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-handler-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-resolver-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-classes-epoll-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-native-epoll-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-native-unix-common-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/osgi-resource-locator-1.0.3.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/paranamer-2.8.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/plexus-utils-3.3.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/reflections-0.9.12.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/reload4j-1.2.25.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/rocksdbjni-7.1.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-collection-compat_2.12-2.10.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-java8-compat_2.12-1.0.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-library-2.12.15.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-logging_2.12-3.9.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-reflect-2.12.15.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/slf4j-api-1.7.36.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/slf4j-reload4j-1.7.36.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/snappy-java-1.1.10.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/swagger-annotations-2.2.8.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/trogdor-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/zookeeper-3.6.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/zookeeper-jute-3.6.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/zstd-jni-1.5.5-1.jar (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:java.library.path=/usr/java/packages/lib:/usr/lib64:/lib64:/lib:/usr/lib (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:java.io.tmpdir=/tmp (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:java.compiler=<NA> (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:os.name=Linux (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:os.arch=amd64 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:os.version=6.5.5-100.fc37.x86_64 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:user.name=dave (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:user.home=/home/dave (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:user.dir=/home/app/kafka/kafka_2.12-3.5.1 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:os.memory.free=490MB (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:os.memory.max=512MB (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO Server environment:os.memory.total=512MB (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO zookeeper.enableEagerACLCheck = false (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO zookeeper.digest.enabled = true (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO zookeeper.closeSessionTxn.enabled = true (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,509] INFO zookeeper.flushDelay=0 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,510] INFO zookeeper.maxWriteQueuePollTime=0 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,510] INFO zookeeper.maxBatchSize=1000 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,510] INFO zookeeper.intBufferStartingSizeBytes = 1024 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,511] INFO Weighed connection throttling is disabled (org.apache.zookeeper.server.BlueThrottle)
[2023-10-09 13:18:51,512] INFO minSessionTimeout set to 6000 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,512] INFO maxSessionTimeout set to 60000 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,513] INFO Response cache size is initialized with value 400. (org.apache.zookeeper.server.ResponseCache)
[2023-10-09 13:18:51,513] INFO Response cache size is initialized with value 400. (org.apache.zookeeper.server.ResponseCache)
[2023-10-09 13:18:51,514] INFO zookeeper.pathStats.slotCapacity = 60 (org.apache.zookeeper.server.util.RequestPathMetricsCollector)
[2023-10-09 13:18:51,514] INFO zookeeper.pathStats.slotDuration = 15 (org.apache.zookeeper.server.util.RequestPathMetricsCollector)
[2023-10-09 13:18:51,515] INFO zookeeper.pathStats.maxDepth = 6 (org.apache.zookeeper.server.util.RequestPathMetricsCollector)
[2023-10-09 13:18:51,515] INFO zookeeper.pathStats.initialDelay = 5 (org.apache.zookeeper.server.util.RequestPathMetricsCollector)
[2023-10-09 13:18:51,515] INFO zookeeper.pathStats.delay = 5 (org.apache.zookeeper.server.util.RequestPathMetricsCollector)
[2023-10-09 13:18:51,515] INFO zookeeper.pathStats.enabled = false (org.apache.zookeeper.server.util.RequestPathMetricsCollector)
[2023-10-09 13:18:51,521] INFO The max bytes for all large requests are set to 104857600 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,521] INFO The large request threshold is set to -1 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,521] INFO Created server with tickTime 3000 minSessionTimeout 6000 maxSessionTimeout 60000 clientPortListenBacklog -1 datadir /tmp/zookeeper/version-2 snapdir /tmp/zookeeper/version-2 (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,531] INFO Using org.apache.zookeeper.server.NIOServerCnxnFactory as server connection factory (org.apache.zookeeper.server.ServerCnxnFactory)
[2023-10-09 13:18:51,532] WARN maxCnxns is not configured, using default value 0. (org.apache.zookeeper.server.ServerCnxnFactory)
[2023-10-09 13:18:51,534] INFO Configuring NIO connection handler with 10s sessionless connection timeout, 2 selector thread(s), 16 worker threads, and 64 kB direct buffers. (org.apache.zookeeper.server.NIOServerCnxnFactory)
[2023-10-09 13:18:51,541] INFO binding to port 0.0.0.0/0.0.0.0:2181 (org.apache.zookeeper.server.NIOServerCnxnFactory)
[2023-10-09 13:18:51,565] INFO Using org.apache.zookeeper.server.watch.WatchManager as watch manager (org.apache.zookeeper.server.watch.WatchManagerFactory)
[2023-10-09 13:18:51,565] INFO Using org.apache.zookeeper.server.watch.WatchManager as watch manager (org.apache.zookeeper.server.watch.WatchManagerFactory)
[2023-10-09 13:18:51,567] INFO zookeeper.snapshotSizeFactor = 0.33 (org.apache.zookeeper.server.ZKDatabase)
[2023-10-09 13:18:51,567] INFO zookeeper.commitLogCount=500 (org.apache.zookeeper.server.ZKDatabase)
[2023-10-09 13:18:51,574] INFO zookeeper.snapshot.compression.method = CHECKED (org.apache.zookeeper.server.persistence.SnapStream)
[2023-10-09 13:18:51,574] INFO Snapshotting: 0x0 to /tmp/zookeeper/version-2/snapshot.0 (org.apache.zookeeper.server.persistence.FileTxnSnapLog)
[2023-10-09 13:18:51,577] INFO Snapshot loaded in 10 ms, highest zxid is 0x0, digest is 1371985504 (org.apache.zookeeper.server.ZKDatabase)
[2023-10-09 13:18:51,577] INFO Snapshotting: 0x0 to /tmp/zookeeper/version-2/snapshot.0 (org.apache.zookeeper.server.persistence.FileTxnSnapLog)
[2023-10-09 13:18:51,577] INFO Snapshot taken in 0 ms (org.apache.zookeeper.server.ZooKeeperServer)
[2023-10-09 13:18:51,588] INFO PrepRequestProcessor (sid:0) started, reconfigEnabled=false (org.apache.zookeeper.server.PrepRequestProcessor)
[2023-10-09 13:18:51,589] INFO zookeeper.request_throttler.shutdownTimeout = 10000 (org.apache.zookeeper.server.RequestThrottler)
[2023-10-09 13:18:51,611] INFO Using checkIntervalMs=60000 maxPerMinute=10000 maxNeverUsedIntervalMs=0 (org.apache.zookeeper.server.ContainerManager)
[2023-10-09 13:18:51,612] INFO ZooKeeper audit is disabled. (org.apache.zookeeper.audit.ZKAuditProvider)

Running process

[dave@dave kafka_2.12-3.5.1]$ pgrep -a java
9605 java -Xmx512M -Xms512M -server -XX:+UseG1GC -XX:MaxGCPauseMillis=20 -XX:InitiatingHeapOccupancyPercent=35 -XX:+ExplicitGCInvokesConcurrent -XX:MaxInlineLevel=15 -Djava.awt.headless=true -Xlog:gc*:file=/app/kafka/kafka_2.12-3.5.1/bin/../logs/zookeeper-gc.log:time,tags:filecount=10,filesize=100M -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dkafka.logs.dir=/app/kafka/kafka_2.12-3.5.1/bin/../logs -Dlog4j.configuration=file:bin/../config/log4j.properties -cp /app/kafka/kafka_2.12-3.5.1/bin/../libs/activation-1.1.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/aopalliance-repackaged-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/argparse4j-0.7.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/audience-annotations-0.13.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/commons-cli-1.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/commons-lang3-3.8.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-api-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-basic-auth-extension-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-json-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-mirror-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-mirror-client-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-runtime-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-transforms-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/hk2-api-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/hk2-locator-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/hk2-utils-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-annotations-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-core-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-databind-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-dataformat-csv-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-datatype-jdk8-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-jaxrs-base-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-jaxrs-json-provider-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-module-jaxb-annotations-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-module-scala_2.12-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.activation-api-1.2.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.annotation-api-1.3.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.inject-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.validation-api-2.0.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.ws.rs-api-2.1.6.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.xml.bind-api-2.3.3.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javassist-3.29.2-GA.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.activation-api-1.2.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.annotation-api-1.3.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.servlet-api-3.1.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.ws.rs-api-2.1.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jaxb-api-2.3.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-client-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-common-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-container-servlet-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-container-servlet-core-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-hk2-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-server-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-client-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-continuation-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-http-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-io-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-security-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-server-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-servlet-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-servlets-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-util-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-util-ajax-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jline-3.22.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jopt-simple-5.0.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jose4j-0.9.3.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka_2.12-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-clients-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-group-coordinator-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-log4j-appender-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-metadata-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-raft-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-server-common-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-shell-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-storage-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-storage-api-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-examples-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-scala_2.12-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-test-utils-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-tools-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-tools-api-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/lz4-java-1.8.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/maven-artifact-3.8.8.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/metrics-core-2.2.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/metrics-core-4.1.12.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-buffer-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-codec-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-common-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-handler-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-resolver-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-classes-epoll-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-native-epoll-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-native-unix-common-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/osgi-resource-locator-1.0.3.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/paranamer-2.8.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/plexus-utils-3.3.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/reflections-0.9.12.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/reload4j-1.2.25.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/rocksdbjni-7.1.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-collection-compat_2.12-2.10.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-java8-compat_2.12-1.0.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-library-2.12.15.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-logging_2.12-3.9.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-reflect-2.12.15.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/slf4j-api-1.7.36.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/slf4j-reload4j-1.7.36.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/snappy-java-1.1.10.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/swagger-annotations-2.2.8.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/trogdor-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/zookeeper-3.6.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/zookeeper-jute-3.6.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/zstd-jni-1.5.5-1.jar org.apache.zookeeper.server.quorum.QuorumPeerMain config/zookeeper.properties

Server start

Change config parameters in config/server.properties

############################# Log Basics #############################

# A comma separated list of directories under which to store log files
log.dirs=/app/kafka/logs

############################# Server Basics #############################

# The id of the broker. This must be set to a unique integer for each broker.
broker.id=100

start server process

[dave@dave kafka_2.12-3.5.1]$ bin/kafka-server-start.sh config/server.properties 
[2023-10-09 13:52:40,614] INFO Registered kafka:type=kafka.Log4jController MBean (kafka.utils.Log4jControllerRegistration$)
[2023-10-09 13:52:41,054] INFO Setting -D jdk.tls.rejectClientInitiatedRenegotiation=true to disable client-initiated TLS renegotiation (org.apache.zookeeper.common.X509Util)
[2023-10-09 13:52:41,158] INFO Registered signal handlers for TERM, INT, HUP (org.apache.kafka.common.utils.LoggingSignalHandler)
[2023-10-09 13:52:41,159] INFO starting (kafka.server.KafkaServer)
[2023-10-09 13:52:41,160] INFO Connecting to zookeeper on localhost:2181 (kafka.server.KafkaServer)
[2023-10-09 13:52:41,175] INFO [ZooKeeperClient Kafka server] Initializing a new session to localhost:2181. (kafka.zookeeper.ZooKeeperClient)
[2023-10-09 13:52:41,180] INFO Client environment:zookeeper.version=3.6.4--d65253dcf68e9097c6e95a126463fd5fdeb4521c, built on 12/18/2022 18:10 GMT (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,180] INFO Client environment:host.name=dave (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,180] INFO Client environment:java.version=11.0.16.1 (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,180] INFO Client environment:java.vendor=Oracle Corporation (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,180] INFO Client environment:java.home=/usr/java/jdk-11.0.16.1 (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,180] INFO Client environment:java.class.path=/app/kafka/kafka_2.12-3.5.1/bin/../libs/activation-1.1.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/aopalliance-repackaged-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/argparse4j-0.7.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/audience-annotations-0.13.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/commons-cli-1.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/commons-lang3-3.8.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-api-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-basic-auth-extension-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-json-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-mirror-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-mirror-client-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-runtime-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/connect-transforms-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/hk2-api-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/hk2-locator-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/hk2-utils-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-annotations-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-core-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-databind-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-dataformat-csv-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-datatype-jdk8-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-jaxrs-base-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-jaxrs-json-provider-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-module-jaxb-annotations-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jackson-module-scala_2.12-2.13.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.activation-api-1.2.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.annotation-api-1.3.5.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.inject-2.6.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.validation-api-2.0.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.ws.rs-api-2.1.6.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jakarta.xml.bind-api-2.3.3.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javassist-3.29.2-GA.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.activation-api-1.2.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.annotation-api-1.3.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.servlet-api-3.1.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/javax.ws.rs-api-2.1.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jaxb-api-2.3.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-client-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-common-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-container-servlet-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-container-servlet-core-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-hk2-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jersey-server-2.39.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-client-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-continuation-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-http-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-io-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-security-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-server-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-servlet-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-servlets-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-util-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jetty-util-ajax-9.4.51.v20230217.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jline-3.22.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jopt-simple-5.0.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/jose4j-0.9.3.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka_2.12-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-clients-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-group-coordinator-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-log4j-appender-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-metadata-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-raft-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-server-common-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-shell-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-storage-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-storage-api-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-examples-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-scala_2.12-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-streams-test-utils-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-tools-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/kafka-tools-api-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/lz4-java-1.8.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/maven-artifact-3.8.8.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/metrics-core-2.2.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/metrics-core-4.1.12.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-buffer-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-codec-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-common-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-handler-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-resolver-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-classes-epoll-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-native-epoll-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/netty-transport-native-unix-common-4.1.94.Final.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/osgi-resource-locator-1.0.3.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/paranamer-2.8.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/plexus-utils-3.3.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/reflections-0.9.12.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/reload4j-1.2.25.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/rocksdbjni-7.1.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-collection-compat_2.12-2.10.0.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-java8-compat_2.12-1.0.2.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-library-2.12.15.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-logging_2.12-3.9.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/scala-reflect-2.12.15.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/slf4j-api-1.7.36.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/slf4j-reload4j-1.7.36.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/snappy-java-1.1.10.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/swagger-annotations-2.2.8.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/trogdor-3.5.1.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/zookeeper-3.6.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/zookeeper-jute-3.6.4.jar:/app/kafka/kafka_2.12-3.5.1/bin/../libs/zstd-jni-1.5.5-1.jar (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:java.library.path=/usr/java/packages/lib:/usr/lib64:/lib64:/lib:/usr/lib (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:java.io.tmpdir=/tmp (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:java.compiler=<NA> (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:os.name=Linux (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:os.arch=amd64 (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:os.version=6.5.5-100.fc37.x86_64 (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:user.name=dave (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:user.home=/home/dave (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:user.dir=/home/app/kafka/kafka_2.12-3.5.1 (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:os.memory.free=1011MB (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:os.memory.max=1024MB (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,181] INFO Client environment:os.memory.total=1024MB (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,183] INFO Initiating client connection, connectString=localhost:2181 sessionTimeout=18000 watcher=kafka.zookeeper.ZooKeeperClient$ZooKeeperClientWatcher$@3a3e78f (org.apache.zookeeper.ZooKeeper)
[2023-10-09 13:52:41,188] INFO jute.maxbuffer value is 4194304 Bytes (org.apache.zookeeper.ClientCnxnSocket)
[2023-10-09 13:52:41,194] INFO zookeeper.request.timeout value is 0. feature enabled=false (org.apache.zookeeper.ClientCnxn)
[2023-10-09 13:52:41,196] INFO [ZooKeeperClient Kafka server] Waiting until connected. (kafka.zookeeper.ZooKeeperClient)
[2023-10-09 13:52:41,198] INFO Opening socket connection to server localhost/127.0.0.1:2181. (org.apache.zookeeper.ClientCnxn)
[2023-10-09 13:52:41,204] INFO Socket connection established, initiating session, client: /127.0.0.1:53256, server: localhost/127.0.0.1:2181 (org.apache.zookeeper.ClientCnxn)
[2023-10-09 13:52:41,225] INFO Session establishment complete on server localhost/127.0.0.1:2181, session id = 0x100010063960000, negotiated timeout = 18000 (org.apache.zookeeper.ClientCnxn)
[2023-10-09 13:52:41,229] INFO [ZooKeeperClient Kafka server] Connected. (kafka.zookeeper.ZooKeeperClient)
[2023-10-09 13:52:41,479] INFO Cluster ID = -c2ZUNqaTmmDSC1x9HxQJQ (kafka.server.KafkaServer)
[2023-10-09 13:52:41,482] WARN No meta.properties file under dir /app/kafka/logs/meta.properties (kafka.server.BrokerMetadataCheckpoint)
[2023-10-09 13:52:41,581] INFO KafkaConfig values: 
    advertised.listeners = null
    alter.config.policy.class.name = null
    alter.log.dirs.replication.quota.window.num = 11
    alter.log.dirs.replication.quota.window.size.seconds = 1
    authorizer.class.name = 
    auto.create.topics.enable = true
    auto.include.jmx.reporter = true
    auto.leader.rebalance.enable = true
    background.threads = 10
    broker.heartbeat.interval.ms = 2000
    broker.id = 0
    broker.id.generation.enable = true
    broker.rack = null
    broker.session.timeout.ms = 9000
    client.quota.callback.class = null
    compression.type = producer
    connection.failed.authentication.delay.ms = 100
    connections.max.idle.ms = 600000
    connections.max.reauth.ms = 0
    control.plane.listener.name = null
    controlled.shutdown.enable = true
    controlled.shutdown.max.retries = 3
    controlled.shutdown.retry.backoff.ms = 5000
    controller.listener.names = null
    controller.quorum.append.linger.ms = 25
    controller.quorum.election.backoff.max.ms = 1000
    controller.quorum.election.timeout.ms = 1000
    controller.quorum.fetch.timeout.ms = 2000
    controller.quorum.request.timeout.ms = 2000
    controller.quorum.retry.backoff.ms = 20
    controller.quorum.voters = []
    controller.quota.window.num = 11
    controller.quota.window.size.seconds = 1
    controller.socket.timeout.ms = 30000
    create.topic.policy.class.name = null
    default.replication.factor = 1
    delegation.token.expiry.check.interval.ms = 3600000
    delegation.token.expiry.time.ms = 86400000
    delegation.token.master.key = null
    delegation.token.max.lifetime.ms = 604800000
    delegation.token.secret.key = null
    delete.records.purgatory.purge.interval.requests = 1
    delete.topic.enable = true
    early.start.listeners = null
    fetch.max.bytes = 57671680
    fetch.purgatory.purge.interval.requests = 1000
    group.consumer.assignors = []
    group.consumer.heartbeat.interval.ms = 5000
    group.consumer.max.heartbeat.interval.ms = 15000
    group.consumer.max.session.timeout.ms = 60000
    group.consumer.max.size = 2147483647
    group.consumer.min.heartbeat.interval.ms = 5000
    group.consumer.min.session.timeout.ms = 45000
    group.consumer.session.timeout.ms = 45000
    group.coordinator.new.enable = false
    group.coordinator.threads = 1
    group.initial.rebalance.delay.ms = 0
    group.max.session.timeout.ms = 1800000
    group.max.size = 2147483647
    group.min.session.timeout.ms = 6000
    initial.broker.registration.timeout.ms = 60000
    inter.broker.listener.name = null
    inter.broker.protocol.version = 3.5-IV2
    kafka.metrics.polling.interval.secs = 10
    kafka.metrics.reporters = []
    leader.imbalance.check.interval.seconds = 300
    leader.imbalance.per.broker.percentage = 10
    listener.security.protocol.map = PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
    listeners = PLAINTEXT://:9092
    log.cleaner.backoff.ms = 15000
    log.cleaner.dedupe.buffer.size = 134217728
    log.cleaner.delete.retention.ms = 86400000
    log.cleaner.enable = true
    log.cleaner.io.buffer.load.factor = 0.9
    log.cleaner.io.buffer.size = 524288
    log.cleaner.io.max.bytes.per.second = 1.7976931348623157E308
    log.cleaner.max.compaction.lag.ms = 9223372036854775807
    log.cleaner.min.cleanable.ratio = 0.5
    log.cleaner.min.compaction.lag.ms = 0
    log.cleaner.threads = 1
    log.cleanup.policy = [delete]
    log.dir = /tmp/kafka-logs
    log.dirs = /app/kafka/logs
    log.flush.interval.messages = 9223372036854775807
    log.flush.interval.ms = null
    log.flush.offset.checkpoint.interval.ms = 60000
    log.flush.scheduler.interval.ms = 9223372036854775807
    log.flush.start.offset.checkpoint.interval.ms = 60000
    log.index.interval.bytes = 4096
    log.index.size.max.bytes = 10485760
    log.message.downconversion.enable = true
    log.message.format.version = 3.0-IV1
    log.message.timestamp.difference.max.ms = 9223372036854775807
    log.message.timestamp.type = CreateTime
    log.preallocate = false
    log.retention.bytes = -1
    log.retention.check.interval.ms = 300000
    log.retention.hours = 168
    log.retention.minutes = null
    log.retention.ms = null
    log.roll.hours = 168
    log.roll.jitter.hours = 0
    log.roll.jitter.ms = null
    log.roll.ms = null
    log.segment.bytes = 1073741824
    log.segment.delete.delay.ms = 60000
    max.connection.creation.rate = 2147483647
    max.connections = 2147483647
    max.connections.per.ip = 2147483647
    max.connections.per.ip.overrides = 
    max.incremental.fetch.session.cache.slots = 1000
    message.max.bytes = 1048588
    metadata.log.dir = null
    metadata.log.max.record.bytes.between.snapshots = 20971520
    metadata.log.max.snapshot.interval.ms = 3600000
    metadata.log.segment.bytes = 1073741824
    metadata.log.segment.min.bytes = 8388608
    metadata.log.segment.ms = 604800000
    metadata.max.idle.interval.ms = 500
    metadata.max.retention.bytes = 104857600
    metadata.max.retention.ms = 604800000
    metric.reporters = []
    metrics.num.samples = 2
    metrics.recording.level = INFO
    metrics.sample.window.ms = 30000
    min.insync.replicas = 1
    node.id = 0
    num.io.threads = 8
    num.network.threads = 3
    num.partitions = 1
    num.recovery.threads.per.data.dir = 1
    num.replica.alter.log.dirs.threads = null
    num.replica.fetchers = 1
    offset.metadata.max.bytes = 4096
    offsets.commit.required.acks = -1
    offsets.commit.timeout.ms = 5000
    offsets.load.buffer.size = 5242880
    offsets.retention.check.interval.ms = 600000
    offsets.retention.minutes = 10080
    offsets.topic.compression.codec = 0
    offsets.topic.num.partitions = 50
    offsets.topic.replication.factor = 1
    offsets.topic.segment.bytes = 104857600
    password.encoder.cipher.algorithm = AES/CBC/PKCS5Padding
    password.encoder.iterations = 4096
    password.encoder.key.length = 128
    password.encoder.keyfactory.algorithm = null
    password.encoder.old.secret = null
    password.encoder.secret = null
    principal.builder.class = class org.apache.kafka.common.security.authenticator.DefaultKafkaPrincipalBuilder
    process.roles = []
    producer.id.expiration.check.interval.ms = 600000
    producer.id.expiration.ms = 86400000
    producer.purgatory.purge.interval.requests = 1000
    queued.max.request.bytes = -1
    queued.max.requests = 500
    quota.window.num = 11
    quota.window.size.seconds = 1
    remote.log.index.file.cache.total.size.bytes = 1073741824
    remote.log.manager.task.interval.ms = 30000
    remote.log.manager.task.retry.backoff.max.ms = 30000
    remote.log.manager.task.retry.backoff.ms = 500
    remote.log.manager.task.retry.jitter = 0.2
    remote.log.manager.thread.pool.size = 10
    remote.log.metadata.manager.class.name = null
    remote.log.metadata.manager.class.path = null
    remote.log.metadata.manager.impl.prefix = null
    remote.log.metadata.manager.listener.name = null
    remote.log.reader.max.pending.tasks = 100
    remote.log.reader.threads = 10
    remote.log.storage.manager.class.name = null
    remote.log.storage.manager.class.path = null
    remote.log.storage.manager.impl.prefix = null
    remote.log.storage.system.enable = false
    replica.fetch.backoff.ms = 1000
    replica.fetch.max.bytes = 1048576
    replica.fetch.min.bytes = 1
    replica.fetch.response.max.bytes = 10485760
    replica.fetch.wait.max.ms = 500
    replica.high.watermark.checkpoint.interval.ms = 5000
    replica.lag.time.max.ms = 30000
    replica.selector.class = null
    replica.socket.receive.buffer.bytes = 65536
    replica.socket.timeout.ms = 30000
    replication.quota.window.num = 11
    replication.quota.window.size.seconds = 1
    request.timeout.ms = 30000
    reserved.broker.max.id = 1000
    sasl.client.callback.handler.class = null
    sasl.enabled.mechanisms = [GSSAPI]
    sasl.jaas.config = null
    sasl.kerberos.kinit.cmd = /usr/bin/kinit
    sasl.kerberos.min.time.before.relogin = 60000
    sasl.kerberos.principal.to.local.rules = [DEFAULT]
    sasl.kerberos.service.name = null
    sasl.kerberos.ticket.renew.jitter = 0.05
    sasl.kerberos.ticket.renew.window.factor = 0.8
    sasl.login.callback.handler.class = null
    sasl.login.class = null
    sasl.login.connect.timeout.ms = null
    sasl.login.read.timeout.ms = null
    sasl.login.refresh.buffer.seconds = 300
    sasl.login.refresh.min.period.seconds = 60
    sasl.login.refresh.window.factor = 0.8
    sasl.login.refresh.window.jitter = 0.05
    sasl.login.retry.backoff.max.ms = 10000
    sasl.login.retry.backoff.ms = 100
    sasl.mechanism.controller.protocol = GSSAPI
    sasl.mechanism.inter.broker.protocol = GSSAPI
    sasl.oauthbearer.clock.skew.seconds = 30
    sasl.oauthbearer.expected.audience = null
    sasl.oauthbearer.expected.issuer = null
    sasl.oauthbearer.jwks.endpoint.refresh.ms = 3600000
    sasl.oauthbearer.jwks.endpoint.retry.backoff.max.ms = 10000
    sasl.oauthbearer.jwks.endpoint.retry.backoff.ms = 100
    sasl.oauthbearer.jwks.endpoint.url = null
    sasl.oauthbearer.scope.claim.name = scope
    sasl.oauthbearer.sub.claim.name = sub
    sasl.oauthbearer.token.endpoint.url = null
    sasl.server.callback.handler.class = null
    sasl.server.max.receive.size = 524288
    security.inter.broker.protocol = PLAINTEXT
    security.providers = null
    server.max.startup.time.ms = 9223372036854775807
    socket.connection.setup.timeout.max.ms = 30000
    socket.connection.setup.timeout.ms = 10000
    socket.listen.backlog.size = 50
    socket.receive.buffer.bytes = 102400
    socket.request.max.bytes = 104857600
    socket.send.buffer.bytes = 102400
    ssl.cipher.suites = []
    ssl.client.auth = none
    ssl.enabled.protocols = [TLSv1.2, TLSv1.3]
    ssl.endpoint.identification.algorithm = https
    ssl.engine.factory.class = null
    ssl.key.password = null
    ssl.keymanager.algorithm = SunX509
    ssl.keystore.certificate.chain = null
    ssl.keystore.key = null
    ssl.keystore.location = null
    ssl.keystore.password = null
    ssl.keystore.type = JKS
    ssl.principal.mapping.rules = DEFAULT
    ssl.protocol = TLSv1.3
    ssl.provider = null
    ssl.secure.random.implementation = null
    ssl.trustmanager.algorithm = PKIX
    ssl.truststore.certificates = null
    ssl.truststore.location = null
    ssl.truststore.password = null
    ssl.truststore.type = JKS
    transaction.abort.timed.out.transaction.cleanup.interval.ms = 10000
    transaction.max.timeout.ms = 900000
    transaction.remove.expired.transaction.cleanup.interval.ms = 3600000
    transaction.state.log.load.buffer.size = 5242880
    transaction.state.log.min.isr = 1
    transaction.state.log.num.partitions = 50
    transaction.state.log.replication.factor = 1
    transaction.state.log.segment.bytes = 104857600
    transactional.id.expiration.ms = 604800000
    unclean.leader.election.enable = false
    unstable.api.versions.enable = false
    zookeeper.clientCnxnSocket = null
    zookeeper.connect = localhost:2181
    zookeeper.connection.timeout.ms = 18000
    zookeeper.max.in.flight.requests = 10
    zookeeper.metadata.migration.enable = false
    zookeeper.session.timeout.ms = 18000
    zookeeper.set.acl = false
    zookeeper.ssl.cipher.suites = null
    zookeeper.ssl.client.enable = false
    zookeeper.ssl.crl.enable = false
    zookeeper.ssl.enabled.protocols = null
    zookeeper.ssl.endpoint.identification.algorithm = HTTPS
    zookeeper.ssl.keystore.location = null
    zookeeper.ssl.keystore.password = null
    zookeeper.ssl.keystore.type = null
    zookeeper.ssl.ocsp.enable = false
    zookeeper.ssl.protocol = TLSv1.2
    zookeeper.ssl.truststore.location = null
    zookeeper.ssl.truststore.password = null
    zookeeper.ssl.truststore.type = null
 (kafka.server.KafkaConfig)
[2023-10-09 13:52:41,621] INFO [ThrottledChannelReaper-Fetch]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2023-10-09 13:52:41,622] INFO [ThrottledChannelReaper-Produce]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2023-10-09 13:52:41,624] INFO [ThrottledChannelReaper-Request]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2023-10-09 13:52:41,626] INFO [ThrottledChannelReaper-ControllerMutation]: Starting (kafka.server.ClientQuotaManager$ThrottledChannelReaper)
[2023-10-09 13:52:41,661] INFO Loading logs from log dirs ArrayBuffer(/app/kafka/logs) (kafka.log.LogManager)
[2023-10-09 13:52:41,665] INFO No logs found to be loaded in /app/kafka/logs (kafka.log.LogManager)
[2023-10-09 13:52:41,682] INFO Loaded 0 logs in 21ms (kafka.log.LogManager)
[2023-10-09 13:52:41,685] INFO Starting log cleanup with a period of 300000 ms. (kafka.log.LogManager)
[2023-10-09 13:52:41,687] INFO Starting log flusher with a default period of 9223372036854775807 ms. (kafka.log.LogManager)
[2023-10-09 13:52:41,780] INFO [kafka-log-cleaner-thread-0]: Starting (kafka.log.LogCleaner$CleanerThread)
[2023-10-09 13:52:41,796] INFO [feature-zk-node-event-process-thread]: Starting (kafka.server.FinalizedFeatureChangeListener$ChangeNotificationProcessorThread)
[2023-10-09 13:52:41,805] INFO Feature ZK node at path: /feature does not exist (kafka.server.FinalizedFeatureChangeListener)
[2023-10-09 13:52:41,844] INFO [zk-broker-0-to-controller-forwarding-channel-manager]: Starting (kafka.server.BrokerToControllerRequestThread)
[2023-10-09 13:52:42,194] INFO Updated connection-accept-rate max connection creation rate to 2147483647 (kafka.network.ConnectionQuotas)
[2023-10-09 13:52:42,222] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Created data-plane acceptor and processors for endpoint : ListenerName(PLAINTEXT) (kafka.network.SocketServer)
[2023-10-09 13:52:42,228] INFO [zk-broker-0-to-controller-alter-partition-channel-manager]: Starting (kafka.server.BrokerToControllerRequestThread)
[2023-10-09 13:52:42,258] INFO [ExpirationReaper-0-Produce]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2023-10-09 13:52:42,260] INFO [ExpirationReaper-0-Fetch]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2023-10-09 13:52:42,262] INFO [ExpirationReaper-0-DeleteRecords]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2023-10-09 13:52:42,264] INFO [ExpirationReaper-0-ElectLeader]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2023-10-09 13:52:42,281] INFO [LogDirFailureHandler]: Starting (kafka.server.ReplicaManager$LogDirFailureHandler)
[2023-10-09 13:52:42,309] INFO Creating /brokers/ids/0 (is it secure? false) (kafka.zk.KafkaZkClient)
[2023-10-09 13:52:42,338] INFO Stat of the created znode at /brokers/ids/0 is: 25,25,1696852362328,1696852362328,1,0,0,72058695220330496,192,0,25
 (kafka.zk.KafkaZkClient)
[2023-10-09 13:52:42,339] INFO Registered broker 0 at path /brokers/ids/0 with addresses: PLAINTEXT://dave:9092, czxid (broker epoch): 25 (kafka.zk.KafkaZkClient)
[2023-10-09 13:52:42,420] INFO [ExpirationReaper-0-topic]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2023-10-09 13:52:42,427] INFO Successfully created /controller_epoch with initial epoch 0 (kafka.zk.KafkaZkClient)
[2023-10-09 13:52:42,429] INFO [ExpirationReaper-0-Heartbeat]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2023-10-09 13:52:42,430] INFO [ExpirationReaper-0-Rebalance]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2023-10-09 13:52:42,443] INFO Feature ZK node created at path: /feature (kafka.server.FinalizedFeatureChangeListener)
[2023-10-09 13:52:42,451] INFO [GroupCoordinator 0]: Starting up. (kafka.coordinator.group.GroupCoordinator)
[2023-10-09 13:52:42,457] INFO [GroupCoordinator 0]: Startup complete. (kafka.coordinator.group.GroupCoordinator)
[2023-10-09 13:52:42,475] INFO [MetadataCache brokerId=0] Updated cache from existing <empty> to latest FinalizedFeaturesAndEpoch(features=Map(), epoch=0). (kafka.server.metadata.ZkMetadataCache)
[2023-10-09 13:52:42,479] INFO [TransactionCoordinator id=0] Starting up. (kafka.coordinator.transaction.TransactionCoordinator)
[2023-10-09 13:52:42,483] INFO [TxnMarkerSenderThread-0]: Starting (kafka.coordinator.transaction.TransactionMarkerChannelManager)
[2023-10-09 13:52:42,483] INFO [TransactionCoordinator id=0] Startup complete. (kafka.coordinator.transaction.TransactionCoordinator)
[2023-10-09 13:52:42,542] INFO [ExpirationReaper-0-AlterAcls]: Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper)
[2023-10-09 13:52:42,566] INFO [Controller id=0, targetBrokerId=0] Node 0 disconnected. (org.apache.kafka.clients.NetworkClient)
[2023-10-09 13:52:42,570] WARN [Controller id=0, targetBrokerId=0] Connection to node 0 (dave/192.168.0.115:9092) could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)
[2023-10-09 13:52:42,575] INFO [Controller id=0, targetBrokerId=0] Client requested connection close from node 0 (org.apache.kafka.clients.NetworkClient)
[2023-10-09 13:52:42,580] INFO [/config/changes-event-process-thread]: Starting (kafka.common.ZkNodeChangeNotificationListener$ChangeEventProcessThread)
[2023-10-09 13:52:42,603] INFO [SocketServer listenerType=ZK_BROKER, nodeId=0] Enabling request processing. (kafka.network.SocketServer)
[2023-10-09 13:52:42,608] INFO Awaiting socket connections on 0.0.0.0:9092. (kafka.network.DataPlaneAcceptor)
[2023-10-09 13:52:42,650] INFO Kafka version: 3.5.1 (org.apache.kafka.common.utils.AppInfoParser)
[2023-10-09 13:52:42,650] INFO Kafka commitId: 2c6fb6c54472e90a (org.apache.kafka.common.utils.AppInfoParser)
[2023-10-09 13:52:42,650] INFO Kafka startTimeMs: 1696852362645 (org.apache.kafka.common.utils.AppInfoParser)
[2023-10-09 13:52:42,652] INFO [KafkaServer id=0] started (kafka.server.KafkaServer)
[2023-10-09 13:52:42,756] INFO [zk-broker-0-to-controller-forwarding-channel-manager]: Recorded new controller, from now on will use node dave:9092 (id: 0 rack: null) (kafka.server.BrokerToControllerRequestThread)
[2023-10-09 13:52:42,833] INFO [zk-broker-0-to-controller-alter-partition-channel-manager]: Recorded new controller, from now on will use node dave:9092 (id: 0 rack: null) (kafka.server.BrokerToControllerRequestThread)

Kafka logs

$ ls -lt /app/kafka/logs/
total 12
-rw-r--r--. 1 dave dave  4 Oct  9 14:00 log-start-offset-checkpoint
-rw-r--r--. 1 dave dave  4 Oct  9 14:00 recovery-point-offset-checkpoint
-rw-r--r--. 1 dave dave 89 Oct  9 13:52 meta.properties
-rw-r--r--. 1 dave dave  0 Oct  9 13:52 replication-offset-checkpoint
-rw-r--r--. 1 dave dave  0 Oct  9 13:52 cleaner-offset-checkpoint