[2020-08-12T12:53:29,146][INFO ][org.logstash.beats.BeatsHandler][main][2ab0e765b84268c7156e67dc3b10bd35b876b27ad91871edfa9d3b1669f4fea7] [local: 10.100.80.40:5044, remote: 10.100.80.40:39494] Handling exception: org.logstash.beats.InvalidFrameProtocolException: Invalid version of beats protocol: 69
[2020-08-12T12:53:29,146][WARN ][io.netty.channel.DefaultChannelPipeline][main][2ab0e765b84268c7156e67dc3b10bd35b876b27ad91871edfa9d3b1669f4fea7] An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception.
io.netty.handler.codec.DecoderException: org.logstash.beats.InvalidFrameProtocolException: Invalid version of beats protocol: 69
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:471) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:404) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:371) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:354) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:262) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.channel.AbstractChannelHandlerContext.access$300(AbstractChannelHandlerContext.java:61) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.channel.AbstractChannelHandlerContext$4.run(AbstractChannelHandlerContext.java:253) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.util.concurrent.DefaultEventExecutor.run(DefaultEventExecutor.java:66) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) [netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-all-4.1.49.Final.jar:4.1.49.Final]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
Caused by: org.logstash.beats.InvalidFrameProtocolException: Invalid version of beats protocol: 69
at org.logstash.beats.Protocol.version(Protocol.java:22) ~[logstash-input-beats-6.0.11.jar:?]
at org.logstash.beats.BeatsParser.decode(BeatsParser.java:62) ~[logstash-input-beats-6.0.11.jar:?]
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:501) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:440) ~[netty-all-4.1.49.Final.jar:4.1.49.Final]
... 11 more
This is not a logstash question, it is an elasticsearch question. If you move this thread to the elasticsearch forum you may find someone is willing to provide additional explanation of the error message.