ERROR - org.apache.flume.source.NetcatSource.start(NetcatSource.java:169)

报错信息

启动flume时报错

2020-11-15 18:08:36,083 (lifecycleSupervisor-1-3) [ERROR - org.apache.flume.source.NetcatSource.start(NetcatSource.java:169)] Unable to bind to socket. Exception follows.
java.net.BindException: 地址已在使用
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:433)
        at sun.nio.ch.Net.bind(Net.java:425)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:67)
        at org.apache.flume.source.NetcatSource.start(NetcatSource.java:164)
        at org.apache.flume.source.EventDrivenSourceRunner.start(EventDrivenSourceRunner.java:44)
        at org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:249)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
2020-11-15 18:08:36,089 (lifecycleSupervisor-1-3) [INFO - org.apache.flume.source.NetcatSource.stop(NetcatSource.java:197)] Source stopping
2020-11-15 18:08:36,089 (lifecycleSupervisor-1-3) [ERROR - org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:251)] Unable to start EventDrivenSourceRunner: { source:org.apache.flume.source.NetcatSource{name:r1,state:STOP} } - Exception follows.
org.apache.flume.FlumeException: java.net.BindException: 地址已在使用
        at org.apache.flume.source.NetcatSource.start(NetcatSource.java:171)
        at org.apache.flume.source.EventDrivenSourceRunner.start(EventDrivenSourceRunner.java:44)
        at org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:249)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.BindException: 地址已在使用
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:433)
        at sun.nio.ch.Net.bind(Net.java:425)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:67)
        at org.apache.flume.source.NetcatSource.start(NetcatSource.java:164)
        9 more

报错原因：

conf 中 Agent 配置文件中 a1.sources.r1.bind 的属性值不对

解决方案：

修改conf 中 Agent配置文件中 a1.sources.r1.bind 的属性值。