apache-kafka - Kafka + Zookeeper : Connection to node -1 could not be established. Broker 可能不可用

Question

我在我的 locahost 中同时运行 Zookeeper 和 Kafka(每个实例 1 个)。

我成功地从 kafka 创建了一个主题:

./bin/kafka-topics.sh --zookeeper localhost:2181 --create --replication-factor 1 --partitions 1 --topic Hello-Nicola

Created topic "Hello-Nicola".

卡夫卡日志显示:

[2017-12-06 16:00:17,753] INFO [KafkaServer id=0] started (kafka.server.KafkaServer)
[2017-12-06 16:03:19,347] INFO [ReplicaFetcherManager on broker 0] Removed fetcher for partitions Hello-Nicola-0 (kafka.server.ReplicaFetcherManager)
[2017-12-06 16:03:19,393] INFO Loading producer state from offset 0 for partition Hello-Nicola-0 with message format version 2 (kafka.log.Log)
[2017-12-06 16:03:19,406] INFO Completed load of log Hello-Nicola-0 with 1 log segments, log start offset 0 and log end offset 0 in 35 ms (kafka.log.Log)
[2017-12-06 16:03:19,408] INFO Created log for partition [Hello-Nicola,0] in /tmp/kafka-logs with properties {compression.type -> producer, message.format.version -> 1.0-IV0, file.delete.delay.ms -> 60000, max.message.bytes -> 1000012, min.compaction.lag.ms -> 0, message.timestamp.type -> CreateTime, min.insync.replicas -> 1, segment.jitter.ms -> 0, preallocate -> false, min.cleanable.dirty.ratio -> 0.5, index.interval.bytes -> 4096, unclean.leader.election.enable -> false, retention.bytes -> -1, delete.retention.ms -> 86400000, cleanup.policy -> [delete], flush.ms -> 9223372036854775807, segment.ms -> 604800000, segment.bytes -> 1073741824, retention.ms -> 604800000, message.timestamp.difference.max.ms -> 9223372036854775807, segment.index.bytes -> 10485760, flush.messages -> 9223372036854775807}. (kafka.log.LogManager)
[2017-12-06 16:03:19,409] INFO [Partition Hello-Nicola-0 broker=0] No checkpointed highwatermark is found for partition Hello-Nicola-0 (kafka.cluster.Partition)
[2017-12-06 16:03:19,411] INFO Replica loaded for partition Hello-Nicola-0 with initial high watermark 0 (kafka.cluster.Replica)
[2017-12-06 16:03:19,413] INFO [Partition Hello-Nicola-0 broker=0] Hello-Nicola-0 starts at Leader Epoch 0 from offset 0. Previous Leader Epoch was: -1 (kafka.cluster.Partition)

但是 Zookeeper 日志显示:

2017-12-06 16:03:19,299 [myid:] - INFO  [ProcessThread(sid:0 cport:2181)::PrepRequestProcessor@653] - Got user-level KeeperException when processing sessionid:0x1000177fb3d0001 type:create cxid:0x43 zxid:0x26 txntype:-1 reqpath:n/a Error Path:/brokers/topics/Hello-Nicola/partitions/0 Error:KeeperErrorCode = NoNode for /brokers/topics/Hello-Nicola/partitions/0
2017-12-06 16:03:19,302 [myid:] - INFO  [ProcessThread(sid:0 cport:2181)::PrepRequestProcessor@653] - Got user-level KeeperException when processing sessionid:0x1000177fb3d0001 type:create cxid:0x44 zxid:0x27 txntype:-1 reqpath:n/a Error Path:/brokers/topics/Hello-Nicola/partitions Error:KeeperErrorCode = NoNode for /brokers/topics/Hello-Nicola/partitions

如果我尝试生成消息:

./bin/kafka-console-producer.sh --broker-list localhost:9092 --topic Hello-Nicola
>ciao
[2017-12-06 16:04:21,897] WARN [Producer clientId=console-producer] Connection to node -1 could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)
[2017-12-06 16:04:22,000] WARN [Producer clientId=console-producer] Connection to node -1 could not be established. Broker may not be available. (org.apache.kafka.clients.NetworkClient)

server.properties(在 kafka 中)是:

broker.id=0
listeners=PLAINTEXT://mylocal-0:9092
num.network.threads=3
num.io.threads=8
socket.send.buffer.bytes=102400
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600
num.partitions=1
num.recovery.threads.per.data.dir=1
offsets.topic.replication.factor=1
transaction.state.log.replication.factor=1
transaction.state.log.min.isr=1
log.retention.hours=168
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
zookeeper.connect=localhost:2181
zookeeper.connection.timeout.ms=6000
group.initial.rebalance.delay.ms=0

Zookeeper似乎没有注册任何经纪人。

请问有什么建议吗？

Answer 1

UPD:如果您在单节点模式下运行:

我在尝试部署应用程序时在 spark 控制台日志中看到了这条消息。通过在 中更改此参数来解决server.properties :

listeners=PLAINTEXT://myhostname:9092

到

listeners=PLAINTEXT://localhost:9092

确保您的 java 进程使用 监听 9092 netstat -lptu