[jira] [Commented] (HADOOP-10136) Custom JMX server to avoid random port usage by default JMX Server

["nijel (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-10136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13881732#comment-13881732 ] 

nijel commented on HADOOP-10136:
--------------------------------

bq.Unfortunately, some Hadoop daemons are using ports in the ephemeral range as if they were fixed ports.

In this case we can change the default port right ? 

In case of JMX even if we need to configure it is not possible. 

So i think better to keep this JMX server as an option.


> Custom JMX server to avoid random port usage by default JMX Server
> ------------------------------------------------------------------
>
>                 Key: HADOOP-10136
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10136
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Vinay
>            Assignee: Vinay
>         Attachments: HADOOP-10136.patch
>
>
> If any of the java process want to enable the JMX MBean server  then following VM arguments needs to be passed.
> {code}
> -Dcom.sun.management.jmxremote
> -Dcom.sun.management.jmxremote.port=14005
> -Dcom.sun.management.jmxremote.local.only=false
> -Dcom.sun.management.jmxremote.authenticate=false
> -Dcom.sun.management.jmxremote.ssl=false{code}
> But the issue here is this will use one more random port other than 14005 while starting JMX. 
> This can be a problem if that random port is used for some other service.
> So support a custom JMX Server through which random port can be avoided.



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