1、增加kafka分区
./kafka-topics.sh --zookeeper 192.168.2.70 --alter --topic us_forward --partitions 24
2、查看kafka的topic
./kafka-topics.sh --zookeeper 192.168.2.70 --list
3、查看单个topic的分区，也可以不加topic
./kafka-topics.sh --zookeeper 192.168.2.70 --describe --topic us_general
Topic: us_general Partition: 0 Leader: 117 Replicas: 117 Isr: 117
Topic: us_general Partition: 1 Leader: 117 Replicas: 117 Isr: 117
4、查看kafka各个组的偏移量
./kafka-run-class.sh kafka.tools.ConsumerOffsetChecker --zookeeper 192.168.110.165:2181 -group test_groupid
5、启动kafka
bin/kafka-server-start.sh config/server.properties &
6、创建topic
bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 2 --partitions 24 --topic topic_test
7、发送消息
bin/kafka-console-producer.sh --broker-list localhost:9092 --topic page_visits
8、消费消息
bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic page_visits --from-beginning
9、删除topic
bin/kafka-topics.sh --zookeeper zk_host:port --delete --topic my_topic_name
10、重新平衡分区和领导者
./kafka-preferred-replica-election.sh --zookeeper 192.168.2.70
11、扩展集群
1)、先把要转移的topic写成json格式topics-to-move.json
{"topics": [
{"topic": "SYNC_DATABASE_UPDATE"},
{"topic": "SYNC_REALTIME_ALARM"},
{"topic": "SYNC_STATION_INFO"},
{"topic": "SYNC_VEHICLE_REG"},
{"topic": "ds_ctrlreq"},
{"topic": "us_ctrlrsp"},
{"topic": "us_forward"},
{"topic": "us_general"},
{"topic": "us_packet"}
],
"version":1
}
2)、用脚本生成一个自动分区的计划
./kafka-reassign-partitions.sh --zookeeper 192.168.2.70 --generate --topics-to-move-json-file topics-to-move.json --broker-list 1,2,3
3)、把生成的建议分区保存成json topics-to-move-execute.json
4)、执行分区计划
/kafka-reassign-partitions.sh --zookeeper 192.168.2.70 --reassignment-json-file topics-to-move-execute.json --execute
5)、检查集群扩展是否完成
/kafka-reassign-partitions.sh --zookeeper 192.168.2.70 --reassignment-json-file topics-to-move-execute.json --verify
12、增加副本数
1)、编写扩展文件,可以利用扩展集群的方式导出现在的分布然后做修改
{ "version":1,
"partitions":[{"topic":"foo","partition":0,"replicas":[5,6,7]}]
}
2)、执行分区计划
/kafka-reassign-partitions.sh --zookeeper 192.168.2.70 --reassignment-json-file topics-to-move-execute.json --execute
3)、检查集群扩展是否完成
/kafka-reassign-partitions.sh --zookeeper 192.168.2.70 --reassignment-json-file topics-to-move-execute.json --verify