笔记之kafuka「建议收藏」

2022-06-27 20:48:42 浏览数 (1)

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注意:”-” 与 “-” 不同,注意区分中英文标点符号

######################### 1、启动集群每个节点的进程 ################################### nohup kafka-server-start.sh /home/hadoop/apps/kafka_2.11-1.1.0/config/server.properties 1>~/kafkalogs/kafka_std.log 2>kafkalogs/kafka_err.log &

######################## 2、创建topic ################################################ kafka-topics.sh –create –zookeeper hdp02:2181, hdp03:2181, hdp01:2181 –replication-factor 3 –partitions 10 –topic kafka_test

kafka-topics.sh –create –zookeeper hdp02:2181, hdp03:2181, hdp01:2181 –replication-factor 1 –partitions 1 –topic weblog

参数解释: –create 创建kafka topic –zookeeper hdp02:2181, hdp03:2181, hdp01:2181 指定kafka的zookeeper地址 –partitions 指定分区的个数 –replication-factor 指定每个分区的副本个数

######################## 3、查看已经创建的所有kafka topic ############################# kafka-topics.sh –list –zookeeper hdp02:2181, hdp03:2181, hdp01:2181

######################## 4、查看某个指定的kafka topic的详细信息 ####################### kafka-topics.sh –zookeeper hdp02:2181, hdp03:2181, hdp01:2181 –describe –topic kafka_test

######################### 4、开启生产者模拟生成数据 #################################### kafka-console-producer.sh –broker-list hdp02:9092,hdp03:9092,hdp01:9092 –topic kafka_test

########################## 5、开启消费者模拟消费数据 ############################### kafka-console-consumer.sh –zookeeper hdp02:2181, hdp03:2181, hdp01:2181 –from-beginning –topic kafka_test

kafka-console-consumer.sh –bootstrap-server hdp02:9092,hdp03:9092,hdp01:9092 –from-beginning –topic kafka_test

########################### 6、查看某topic某个分区的偏移量最大值和最小值 ################## kafka-run-class.sh kafka.tools.GetOffsetShell –topic kafka_test –time -1 –broker-list hdp02:9092,hdp03:9092,hdp01:9092 –partitions 0

############################# 7、增加topic分区数 ########################################### kafka-topics.sh –alter –zookeeper hadoop02:2181,hadoop03:2181,hadoop04:2181 –topic kafka_test –partitions 15

这个操作是不被允许的。 kafka-topics.sh –alter –zookeeper hdp02:2181, hdp03:2181, hdp01:2181 –topic kafka_test –replication-factor 2

##################### 8、获取节点的kafka消息 ######################################## kafka-topics.sh –describe –zookeeper hdp02:2181, hdp03:2181, hdp01:2181 –topic kafka_test

结果: Topic:kafka_test PartitionCount:15 ReplicationFactor:1 Configs: Topic: kafka_test Partition: 0 Leader: 5 Replicas: 5 Isr: 5 Topic: kafka_test Partition: 1 Leader: 2 Replicas: 2 Isr: 2 Topic: kafka_test Partition: 2 Leader: 3 Replicas: 3 Isr: 3 Topic: kafka_test Partition: 3 Leader: 4 Replicas: 4 Isr: 4 Topic: kafka_test Partition: 4 Leader: 5 Replicas: 5 Isr: 5 Topic: kafka_test Partition: 5 Leader: 2 Replicas: 2 Isr: 2 Topic: kafka_test Partition: 6 Leader: 3 Replicas: 3 Isr: 3 Topic: kafka_test Partition: 7 Leader: 4 Replicas: 4 Isr: 4 Topic: kafka_test Partition: 8 Leader: 5 Replicas: 5 Isr: 5 Topic: kafka_test Partition: 9 Leader: 2 Replicas: 2 Isr: 2 Topic: kafka_test Partition: 10 Leader: 3 Replicas: 3 Isr: 3 Topic: kafka_test Partition: 11 Leader: 4 Replicas: 4 Isr: 4 Topic: kafka_test Partition: 12 Leader: 5 Replicas: 5 Isr: 5 Topic: kafka_test Partition: 13 Leader: 2 Replicas: 2 Isr: 2 Topic: kafka_test Partition: 14 Leader: 3 Replicas: 3 Isr: 3

第一行是对所有分区的一个描述,然后每个分区都会对应一行 Topic:topic名称 Partition:topic的分区编号 leader:负责处理消息的读和写,leader是从所有节点中随机选择的。 replicas:列出了所有的副本节点,不管节点是否在服务中。 isr:正在服务中的节点。

##################### 9、删除Topic ################################################### kafka-topics.sh –delete –zookeeper hdp02:2181, hdp03:2181, hdp01:2181 –topic kafka_test –delete-config delete.topic.enable=true

kafka-topics.sh –delete –zookeeper hdp02:2181, hdp03:2181, hdp01:2181 –topic weblog –delete-config delete.topic.enable=true

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