日志升级到log4j2输出到Logstash就报错?报错

项目里日志升级到log4j2 后输出日志到日志系统就不行了，求大神指点一下

log4j2.xml配置：

<configuration status="info">
	
        <Socket name="socket" host="10.1.21.1" port="4567" >
	      <SerializedLayout />
	    </Socket>
	</appenders>

	<loggers>
		<logger name="com.test" level="info"></logger>
		<Root level="info">
	     	<AppenderRef ref="socket"/>
	    </Root>
        
	</loggers>

</configuration>

错误异常：

2016-12-16 11:34:40,503 AsyncAppender-Async ERROR Unable to write to stream TCP:10.1.21.1:4567 for appender socket: org.apache.logging.log4j.core.appender.AppenderLoggingException: Error writing to TCP:10.1.21.1:4567
2016-12-16 11:34:40,506 AsyncAppender-Async ERROR An exception occurred processing Appender socket org.apache.logging.log4j.core.appender.AppenderLoggingException: Error writing to TCP:10.1.21.1:4567
	at org.apache.logging.log4j.core.net.TcpSocketManager.write(TcpSocketManager.java:143)
	at org.apache.logging.log4j.core.appender.OutputStreamManager.write(OutputStreamManager.java:197)
	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.writeByteArrayToManager(AbstractOutputStreamAppender.java:185)
	at org.apache.logging.log4j.core.appender.SocketAppender.directEncodeEvent(SocketAppender.java:424)
	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:169)
	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:160)
	at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120)
	at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
	at org.apache.logging.log4j.core.appender.AsyncAppender$AsyncThread.callAppenders(AsyncAppender.java:451)
	at org.apache.logging.log4j.core.appender.AsyncAppender$AsyncThread.run(AsyncAppender.java:404)
Caused by: java.net.SocketException: Broken pipe
	at java.net.SocketOutputStream.socketWrite0(Native Method)
	at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
	at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
	at org.apache.logging.log4j.core.net.TcpSocketManager.write(TcpSocketManager.java:133)