一、broker的迁移
1.查看zookeeper和kafka启动情况
[root@slave1 ~]# pssh -h hostlist -i 'jps' [1] 22:08:11 [SUCCESS] 20.0.5.12 3492 QuorumPeerMain 8140 Jps 6414 Kafka [2] 22:08:11 [SUCCESS] 20.0.5.13 3490 QuorumPeerMain 4972 Kafka 22972 Jps [3] 22:08:11 [SUCCESS] 20.0.5.11 7369 QuorumPeerMain 23754 Jps 11534 Kafka [4] 22:08:11 [SUCCESS] 20.0.5.14 21263 Jps [5] 22:08:11 [SUCCESS] 20.0.5.15 20818 Jps
2.创建一个topic
[root@slave1 ~]# /opt/kafka/bin/kafka-topics.sh --create --zookeeper 20.0.5.11:2181 --replication-factor 3 --partitions 3 --topic topic1 Created topic "topic1". [root@slave1 ~]# /opt/kafka/bin/kafka-topics.sh --describe --zookeeper 20.0.5.11:2181 --topic topic1 Topic:topic1 PartitionCount:3 ReplicationFactor:3 Configs: Topic: topic1 Partition: 0 Leader: 1 Replicas: 1,3,2 Isr: 1,3,2 Topic: topic1 Partition: 1 Leader: 2 Replicas: 2,1,3 Isr: 2,1,3 Topic: topic1 Partition: 2 Leader: 3 Replicas: 3,2,1 Isr: 3,2,1
3.在要迁移的节点上启动kafka进程
[root@slave1 ~]# pssh -h hostlist '/opt/kafka/bin/kafka-server-start.sh /opt/kafka/config/server.properties > /root/kafka.log 2>1&' [1] 22:17:21 [SUCCESS] 20.0.5.12 [2] 22:17:21 [SUCCESS] 20.0.5.11 [3] 22:17:21 [SUCCESS] 20.0.5.13 [4] 22:17:21 [SUCCESS] 20.0.5.14 [5] 22:17:21 [SUCCESS] 20.0.5.15 [root@slave1 ~]# pssh -h hostlist -i 'jps' [1] 22:17:29 [SUCCESS] 20.0.5.12 3492 QuorumPeerMain 8461 Jps 6414 Kafka [2] 22:17:29 [SUCCESS] 20.0.5.14 21298 Kafka 21609 Jps [3] 22:17:29 [SUCCESS] 20.0.5.11 7369 QuorumPeerMain 24844 Jps 11534 Kafka [4] 22:17:29 [SUCCESS] 20.0.5.13 3490 QuorumPeerMain 4972 Kafka 23292 Jps [5] 22:17:29 [SUCCESS] 20.0.5.15 20854 Kafka 21165 Jps
4.创建需要迁移的topic的json文件
[root@slave1 ~]# cat topic_move.json
{"topics": [{"topic": "topic1"}],
"version":1
}
5.生成迁移规则
[root@slave1 ~]# /opt/kafka/bin/kafka-reassign-partitions.sh --zookeeper 20.0.5.11:2181 --topics-to-move-json-file topic_move.json --broker-list "3,4,5" --generate
Current partition replica assignment
{"version":1,"partitions":[{"topic":"topic1","partition":1,"replicas":[2,1,3],"log_dirs":["any","any","any"]},{"topic":"topic1","partition":0,"replicas":[1,3,2],"log_dirs":["any","any","any"]},{"topic":"topic1","partition":2,"replicas":[3,2,1],"log_dirs":["any","any","any"]}]}
Proposed partition reassignment configuration
{"version":1,"partitions":[{"topic":"topic1","partition":1,"replicas":[5,3,4],"log_dirs":["any","any","any"]},{"topic":"topic1","partition":0,"replicas":[4,5,3],"log_dirs":["any","any","any"]},{"topic":"topic1","partition":2,"replicas":[3,4,5],"log_dirs":["any","any","any"]}]}
6.将生成的数据写入新的json文件
[root@slave1 ~]# cat re_node.json
{"version":1,"partitions":[
{"topic":"topic1","partition":1,"replicas":[5,3,4],"log_dirs":["any","any","any"]},
{"topic":"topic1","partition":0,"replicas":[4,5,3],"log_dirs":["any","any","any"]},
{"topic":"topic1","partition":2,"replicas":[3,4,5],"log_dirs":["any","any","any"]}]
}
7.开始迁移
[root@slave1 ~]# /opt/kafka/bin/kafka-reassign-partitions.sh --zookeeper 20.0.5.11:2181 --reassignment-json-file re_node.json --execute
Current partition replica assignment
{"version":1,"partitions":[{"topic":"topic1","partition":1,"replicas":[2,1,3],"log_dirs":["any","any","any"]},{"topic":"topic1","partition":0,"replicas":[1,3,2],"log_dirs":["any","any","any"]},{"topic":"topic1","partition":2,"replicas":[3,2,1],"log_dirs":["any","any","any"]}]}
Save this to use as the --reassignment-json-file option during rollback
Successfully started reassignment of partitions.
[root@slave1 ~]# /opt/kafka/bin/kafka-reassign-partitions.sh --zookeeper 20.0.5.11:2181 --reassignment-json-file re_node.json --verify
Status of partition reassignment:
Reassignment of partition topic1-1 completed successfully
Reassignment of partition topic1-0 completed successfully
Reassignment of partition topic1-2 completed successfully
8.查看新的分区
[root@slave1 ~]# /opt/kafka/bin/kafka-topics.sh --describe --zookeeper 20.0.5.11:2181 --topic topic1 Topic:topic1 PartitionCount:3 ReplicationFactor:3 Configs: Topic: topic1 Partition: 0 Leader: 4 Replicas: 4,5,3 Isr: 5,3,4 Topic: topic1 Partition: 1 Leader: 5 Replicas: 5,3,4 Isr: 5,3,4 Topic: topic1 Partition: 2 Leader: 3 Replicas: 3,4,5 Isr: 5,3,4
#迁移完后修改好producer和consumer指向新的连接后再停止旧的服务