整理kafka相关的常用命令

管理

## 创建主题（4个分区，2个副本）
bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 2 --partitions 4 --topic test

查询

## 查询集群描述
bin/kafka-topics.sh --describe --zookeeper 

## 消费者列表查询
bin/kafka-topics.sh --zookeeper 127.0.0.1:2181 --list

## 新消费者列表查询（支持0.9版本+）
bin/kafka-consumer-groups.sh --new-consumer --bootstrap-server localhost:9092 --list

## 显示某个消费组的消费详情（仅支持offset存储在zookeeper上的）
bin/kafka-run-class.sh kafka.tools.ConsumerOffsetChecker --zookeeper localhost:2181 --group test

## 显示某个消费组的消费详情（支持0.9版本+）
bin/kafka-consumer-groups.sh --new-consumer --bootstrap-server localhost:9092 --describe --group test-consumer-group

发送和消费

## 生产者
bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test

## 消费者
bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic test

## 新生产者（支持0.9版本+）
bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test --producer.config config/producer.properties

## 新消费者（支持0.9版本+）
bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic test --new-consumer --from-beginning --consumer.config config/consumer.properties

## 高级点的用法
bin/kafka-simple-consumer-shell.sh --brist localhost:9092 --topic test --partition 0 --offset 1234  --max-messages 10

平衡leader

bin/kafka-preferred-replica-election.sh --zookeeper zk_host:port/chroot

kafka自带压测命令

bin/kafka-producer-perf-test.sh --topic test --num-records 100 --record-size 1 --throughput 100  --producer-props bootstrap.servers=localhost:9092

增加副本

1. 创建规则json

   cat > increase-replication-factor.json <<EOF
   {"version":1, "partitions":[
   {"topic":"__consumer_offsets","partition":0,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":1,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":2,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":3,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":4,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":5,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":6,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":7,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":8,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":9,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":10,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":11,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":12,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":13,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":14,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":15,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":16,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":17,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":18,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":19,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":20,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":21,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":22,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":23,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":24,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":25,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":26,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":27,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":28,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":29,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":30,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":31,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":32,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":33,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":34,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":35,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":36,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":37,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":38,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":39,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":40,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":41,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":42,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":43,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":44,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":45,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":46,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":47,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":48,"replicas":[0,1]},
   {"topic":"__consumer_offsets","partition":49,"replicas":[0,1]}]
   }
   EOF
   

2. 执行

   bin/kafka-reassign-partitions.sh --zookeeper localhost:2181 --reassignment-json-file increase-replication-factor.json --execute
   

3. 验证

   bin/kafka-reassign-partitions.sh --zookeeper localhost:2181 --reassignment-json-file increase-replication-factor.json --verify
   

有很多kafka安装者都会把kafka路径设置为/usr/local/kafka。无法得知kafka是什么版本，并且也没有像-version类似的命令。

执行以下命令，获得kafka版本。

# 进入kafka目录
cd /usr/local/kafka

# 执行以下命令
find ./libs/ -name \*kafka_\* | head -1 | grep -o '\kafka[^\n]*'
drwxrwxr-x. 6 root root       117 May 18  2016 kafka_2.11-0.10.0.0

获得了版本为2.11-0.10.0.0。