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https://issues.apache.org/jira/browse/KAFKA-1869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14287339#comment-14287339
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QianHu commented on KAFKA-1869:
-------------------------------

Hello, this is my config:

export KAFKA_HEAP_OPTS="-Xms4g -Xmx4g -XX:+DisableAttachMechanism 
-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.ssl=false 
-Dcom.sun.management.jmxremote.authenticate=false 
-Dcom.sun.management.jmxremote.port=8888 
-Dcom.sun.management.jmxremote.rmi.port=8890 -XX:PermSize=48m 
-XX:MaxPermSize=48m -XX:+UseG1GC -XX:MaxGCPauseMillis=20 
-XX:InitiatingHeapOccupancyPercent=35"

and the port of kafka is 9092,so 

[work@tc kafka]$ jps
5912 Jps
4466 Kafka
[work@tc kafka]$ netstat -pltn |grep 4466
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 0.0.0.0:8888                0.0.0.0:*                   
LISTEN      4466/./bin/../jdk1. 
tcp        0      0 0.0.0.0:8890                0.0.0.0:*                   
LISTEN      4466/./bin/../jdk1. 
tcp        0      0 0.0.0.0:41213               0.0.0.0:*                   
LISTEN      4466/./bin/../jdk1. 
tcp        0      0 0.0.0.0:9092                0.0.0.0:*                   
LISTEN      4466/./bin/../jdk1.

As you said ,the random port(41213) is an implementation specific for JRMP 
.Could you help me how can we set the port with a constant value ? I have tried 
many kinds of methods ,but don't work. Thank you for your attention.

> Openning some random ports while running kafka service 
> -------------------------------------------------------
>
>                 Key: KAFKA-1869
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1869
>             Project: Kafka
>          Issue Type: Bug
>         Environment: kafka_2.9.2-0.8.1.1
>            Reporter: QianHu
>            Assignee: Manikumar Reddy
>             Fix For: 0.8.2
>
>
> while running kafka service , four  random ports have been opened . In which 
> , 8888 and 9092 are setted by myself , but  28538 and 16650 are opened 
> randomly . Can you help me that why this random ports will be opened , and 
> how can we give them constant values ? Thank you very much .
> [work@02 kafka]$ jps
> 8400 Jps
> 727 Kafka
> [work@02 kafka]$ netstat -tpln|grep 727
> (Not all processes could be identified, non-owned process info
>  will not be shown, you would have to be root to see it all.)
> tcp        0      0 0.0.0.0:8888                0.0.0.0:*                   
> LISTEN      727/./bin/../jdk1.7 
> tcp        0      0 0.0.0.0:28538               0.0.0.0:*                   
> LISTEN      727/./bin/../jdk1.7 
> tcp        0      0 0.0.0.0:9092                0.0.0.0:*                   
> LISTEN      727/./bin/../jdk1.7 
> tcp        0      0 0.0.0.0:16650               0.0.0.0:*                   
> LISTEN      727/./bin/../jdk1.7 



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