我已经尝试了两个星期,我正在与连接节点不同的机器上运行Kafka集群。我无法正常运行连接。我可以读写kafka没问题。 Zookeeper似乎运行良好。
我启动连接:
$ bin/connect-distributed connect-distributed.properties
Connect不断循环遍历此错误:
[2018-08-21 15:45:12,161] INFO [Worker clientId=c1, groupId=connect-cluster] Discovered group coordinator 172.25.1.2:9092 (id: 2147483645 rack: null) (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:677)
[2018-08-21 15:45:12,163] INFO [Worker clientId=c1, groupId=connect-cluster] (Re-)joining group (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:509)
[2018-08-21 15:45:12,165] INFO [Worker clientId=c1, groupId=connect-cluster] Group coordinator 172.25.1.2:9092 (id: 2147483645 rack: null) is unavailable or invalid, will attempt rediscovery (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:729)
[2018-08-21 15:45:12,266] INFO [Worker clientId=c1, groupId=connect-cluster] Discovered group coordinator 172.25.40.219:9092 (id: 2147483645 rack: null) (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:677)
[2018-08-21 15:45:12,267] INFO [Worker clientId=c1, groupId=connect-cluster] Group coordinator 172.25.1.2:9092 (id: 2147483645 rack: null) is unavailable or invalid, will attempt rediscovery (org.apache.kafka.clients.consumer.internals.AbstractCoordinator:729)
这是我的connect-distributed.properties的样子:
bootstrap.servers=172.25.1.2:9092,172.25.1.3:9092,172.25.1.4:9092
group.id=connect-cluster
key.converter=org.apache.kafka.connect.json.JsonConverter
value.converter=org.apache.kafka.connect.json.JsonConverter
key.converter.schemas.enable=false
value.converter.schemas.enable=false
offset.storage.topic=connect-offsets
offset.storage.replication.factor=3
offset.storage.partitions=3
config.storage.topic=connect-configs
config.storage.replication.factor=3
status.storage.topic=connect-status
status.storage.replication.factor=3
status.storage.partitions=3
offset.flush.interval.ms=10000
rest.host.name=172.25.1.5
rest.port=8083
heartbeat.interval.ms=3000
session.timeout.ms=30000
security.protocol=PLAINTEXT
client.id=c1
plugin.path=/usr/share/java
__ Consumer_offsets主题如下:
/opt/kafka/bin/kafka-topics.sh --describe --zookeeper localhost:2181 --topic __consumer_offsets
Topic:__consumer_offsets PartitionCount:50 ReplicationFactor:3 Configs:segment.bytes=104857600,cleanup.policy=compact,compression.type=producer
Topic: __consumer_offsets Partition: 0 Leader: 2 Replicas: 1,2,3 Isr: 3,2
Topic: __consumer_offsets Partition: 1 Leader: 2 Replicas: 1,2,3 Isr: 3,2
Topic: __consumer_offsets Partition: 2 Leader: 2 Replicas: 1,2,3 Isr: 3,2
Topic: __consumer_offsets Partition: 3 Leader: 1 Replicas: 1 Isr: 1
Topic: __consumer_offsets Partition: 4 Leader: 2 Replicas: 2 Isr: 2.... etc
答案 0 :(得分:1)
在Go中编写连接器后,我遇到了同样的问题。我被迫自己解决。
当连接器连接到kafka时,它将自动写入主题和__offset_topics
。当连接器崩溃时,它会在自己的表中留下协调的痕迹。当新的连接器启动时,它将在表中找到记录并尝试与协调器进行通信。协调器无法响应,并且连接器永远无法工作。
您可以通过以下两种方法之一来解决此问题:删除所有主题(connect-configs
,connect-offsets
,connect-status
,__offset_topics
)并重新启动集群。另一种方法是从主题中删除协调器,我目前不确定如何执行。
答案 1 :(得分:0)
将所有kafka代理的主机名添加到您的/ etc / hosts文件中,然后重试
答案 2 :(得分:0)
发贴给其他可能会觉得有用的人。
我遇到了同样的问题...并且重启kafka解决了我的问题。
执行后:
service kafka status
在不到10秒的时间内使我的日志正常:
2019-11-08 14:30:19.781 INFO [-,,,] 1 --- [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] o.a.k.c.c.internals.AbstractCoordinator : [Consumer clientId=consumer-2, groupId=datasources-ca-contacts] Discovered group coordinator myserver:9092 (id: 2147483647 rack: null)