kafka使用基础
基于0.8.0版本。##查看topic分布情况kafka-list-topic.sh
bin/kafka-list-topic.sh --zookeeper 192.168.197.170:2181,192.168.197.171:2181 （列出所有topic的分区情况）
bin/kafka-list-topic.sh --zookeeper 192.168.197.170:2181,192.168.197.171:2181 --topic test （查看test的分区情况）
其实kafka-list-topic.sh里面就一句
exec $(dirname $0)/kafka-run-class.sh kafka.admin.ListTopicCommand $@
实际是通过
kafka-run-class.sh脚本执行的包kafka.admin下面的类##创建TOPIC kafka-create-topic.sh
bin/kafka-create-topic.sh --replica 2 --partition 8 --topic test--zookeeper 192.168.197.170:2181,192.168.197.171:2181
创建名为test的topic， 8个分区分别存放数据，数据备份总共2份
bin/kafka-create-topic.sh --replica 1 --partition 1 --topic test2--zookeeper 192.168.197.170:2181,192.168.197.171:2181
结果 topic: test2 partition: 0 leader: 170 replicas: 170 isr: 170
##重新分配分区kafka-reassign-partitions.sh
这个命令可以分区指定到想要的--broker-list上
bin/kafka-reassign-partitions.sh --topics-to-move-json-file topics-to-move.json --broker-list "171" --zookeeper 192.168.197.170:2181,192.168.197.171:2181 --execute
cat topic-to-move.json
{"topics":
[{"topic": "test2"}],
"version":1
}
##为Topic增加 partition数目kafka-add-partitions.sh
bin/kafka-add-partitions.sh --topic test --partition 2--zookeeper192.168.197.170:2181,192.168.197.171:2181 （为topic test增加2个分区）
##控制台接收消息
bin/kafka-console-consumer.sh --zookeeper192.168.197.170:2181,192.168.197.171:2181--from-beginning --topic test
##控制台发送消息
bin/kafka-console-producer.sh --broker-list192.168.197.170:9092,192.168.197.171: 9092 --topic test
##手动均衡topic, kafka-preferred-replica-election.sh
bin/kafka-preferred-replica-election.sh --zookeeper 192.168.197.170:2181,192.168.197.171:2181 --path-to-json-file preferred-click.json
cat preferred-click.json
{
"partitions":
[
{"topic": "click", "partition": 0},
{"topic": "click", "partition": 1},
{"topic": "click", "partition": 2},
{"topic": "click", "partition": 3},
{"topic": "click", "partition": 4},
{"topic": "click", "partition": 5},
{"topic": "click", "partition": 6},
{"topic": "click", "partition": 7},
{"topic": "play", "partition": 0},
{"topic": "play", "partition": 1},
{"topic": "play", "partition": 2},
{"topic": "play", "partition": 3},
{"topic": "play", "partition": 4},
{"topic": "play", "partition": 5},
{"topic": "play", "partition": 6},
{"topic": "play", "partition": 7}
]
}
##删除topic,慎用，只会删除zookeeper中的元数据，消息文件须手动删除
bin/kafka-run-class.sh kafka.admin.DeleteTopicCommand --topic test666 --zookeeper 192.168.197.170:2181 ,192.168.197.171:2181
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