kafka 常见命令以及增加topic的分区数

基础命令

1.创建topic

kafka-topics.sh --bootstrap-server ${kafkaAddress} --create --topic ${topicName} --partitions ${partipartions} --replication-factor ${replication}

2.查看topic详情

kafka-topics.sh --bootstrap-server ${kafkaAddress} --topic ${topicName} --describe

3.删除topic

kafka-topics.sh --bootstrap-server ${kafkaAddress} --delete--topic ${topicName} --partitions ${partitions} --replication-factor ${replication}

4.查看topic list

kafka-topics.sh --bootstrap-server ${kafkaAddress} --list

5.消费topic

kafka-console-consumer.sh --bootstrap-server ${kafkaAddress} --topic ${topicName} --from-beginning

6.查看kafka consumer group 消费情况

kafka-consumer-groups.sh --describe --bootstrap-server ${kafkaAddress} --group ${groupName}

7.已经创建的topic修改partipartions 和 replication-factor 数量

step:

a.修改partitions数量
kafka-topics.sh --bootstrap-server ${kafkaAddress} --topic ${topicName} --alter --partitions 4
b.创建increase-replication-factor.json in config,配置各分区replication-factor位置

{
  "version": 1,
  "partitions": [
    {
      "topic": "${topicName}",
      "partition": 0,
      "replicas": [
        0,
        1
      ]
    },
    {
      "topic": "${topicName}",
      "partition": 1,
      "replicas": [
        1,
        2
      ]
    },
    {
      "topic": "${topicName}",
      "partition": 2,
      "replicas": [
        2,
        3
      ]
    },
    {
      "topic": "${topicName}",
      "partition": 3,
      "replicas": [
        3,
        0
      ]
    }
  ]
}

c.更新replication-factor
kafka-reassign-partitions.sh --bootstrap-server ${kafkaAddress} --reassignment-json-file config/increase-replication-factor.json --execute