flume多级agent测试中遇到的问题

问题详情

Using default maxIOWorkers

2018-03-13 04:52:37,657 (SinkRunner-PollingRunner-DefaultSinkProcessor) [ERROR - org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:160)] Unable to deliver event. Exception follows.
org.apache.flume.EventDeliveryException: Failed to send events
at org.apache.flume.sink.AbstractRpcSink.process(AbstractRpcSink.java:392)
at org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.flume.FlumeException: NettyAvroRpcClient { host: 192.168.165.135, port: 41414 }: RPC connection error
at org.apache.flume.api.NettyAvroRpcClient.connect(NettyAvroRpcClient.java:182)
at org.apache.flume.api.NettyAvroRpcClient.connect(NettyAvroRpcClient.java:121)
at org.apache.flume.api.NettyAvroRpcClient.configure(NettyAvroRpcClient.java:638)
at org.apache.flume.api.RpcClientFactory.getInstance(RpcClientFactory.java:89)
at org.apache.flume.sink.AvroSink.initializeRpcClient(AvroSink.java:127)
at org.apache.flume.sink.AbstractRpcSink.createConnection(AbstractRpcSink.java:211)
at org.apache.flume.sink.AbstractRpcSink.verifyConnection(AbstractRpcSink.java:272)
at org.apache.flume.sink.AbstractRpcSink.process(AbstractRpcSink.java:349)
... 3 more
Caused by: java.io.IOException: Error connecting to /192.168.165.135:41414
at org.apache.avro.ipc.NettyTransceiver.getChannel(NettyTransceiver.java:292)
at org.apache.avro.ipc.NettyTransceiver.(NettyTransceiver.java:206)
at org.apache.avro.ipc.NettyTransceiver.(NettyTransceiver.java:155)
at org.apache.flume.api.NettyAvroRpcClient.connect(NettyAvroRpcClient.java:168)
... 10 more
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at org.jboss.netty.channel.socket.nio.NioClientBoss.connect(NioClientBoss.java:148)
at org.jboss.netty.channel.socket.nio.NioClientBoss.processSelectedKeys(NioClientBoss.java:104)
at org.jboss.netty.channel.socket.nio.NioClientBoss.process(NioClientBoss.java:78)
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312)
at org.jboss.netty.channel.socket.nio.NioClientBoss.run(NioClientBoss.java:41)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

... 1 more

启动命令

./flume-ng agent --conf /etc/flume-ng/conf --conf-file ~/flume-sink.conf --name agent1 -Dflume.root.logger=INFO,console

producer  配置 

# Name the components on this agent

agent1.sources = r1
agent1.sinks = k1
agent1.channels = c1
# Describe/configure the source
agent1.sources.r1.type = exec
agent1.sources.r1.command = tail -F /home/training/log.txt
agent1.sources.r1.channels = c1
# Describe the sink
agent1.sinks.k1.type = avro
agent1.sinks.k1.channel = c1
agent1.sinks.k1.hostname = 192.168.165.135 #目标主机的ip
agent1.sinks.k1.port = 41414
# Use a channel which buffers events in memory
agent1.channels.c1.type = memory
agent1.channels.c1.capacity = 1000
agent1.channels.c1.transactionCapacity = 100
# Bind the source and sink to the channel
agent1.sources.r1.channels = c1
agent1.sinks.k1.channel = c1

consumer   配置

agent1.sources = r1
agent1.sinks = k1
agent1.channels = c1
# Describe/configure the source
agent1.sources.r1.type = avro
agent1.sources.r1.channels = c1
agent1.sources.r1.bind = 0.0.0.0 #或者本机ip 192.168.165.135
agent1.sources.r1.port = 41414
# Describe the sink
agent1.sinks.k1.type = file_roll
agent1.sinks.k1.sink.directory = /tmp/test
agent1.sinks.k1.channel = c1 
agent1.sinks.k1.sink.rollInterval = 10
# Use a channel which buffers events in memory
agent1.channels.c1.type = memory
agent1.channels.c1.capacity = 1000
agent1.channels.c1.transactionCapacity = 100
# Bind the source and sink to the channel
agent1.sources.r1.channels = c1
agent1.sinks.k1.channel = c1

按照上述命令和配置就可以正常启动，注意 先启动接收方（消费者），如果没有先启动接收方，或者启动出错后，启动发送者（生产者）就会出上述错误