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https://issues.apache.org/jira/browse/SLIDER-1259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16373360#comment-16373360
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Steve Loughran commented on SLIDER-1259:
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fed back. Been learning more about multihome. worse than you think



> Slider does not work in multi homed environments
> ------------------------------------------------
>
>                 Key: SLIDER-1259
>                 URL: https://issues.apache.org/jira/browse/SLIDER-1259
>             Project: Slider
>          Issue Type: Bug
>          Components: appmaster
>    Affects Versions: Slider 0.92
>            Reporter: Lev Bronshtein
>            Assignee: Steve Loughran
>            Priority: Minor
>
> In an an environment where Hadoop Worker nodes bind the Node Manager to an 
> interface with a hostname different from the one returned by socket.getfqdn() 
> for example in our test environment a difference between f-bcpc-vm3 and just 
> bcpc-vm3, which is the hostname bound to the management interface, but not 
> the interface for hadoop/production traffic.  This results in our inability 
> to introspect running jobs.
>  
> For example running  *slider registry --name slider_poc --listexp* results in 
> the following output in the ResourceManager logs
> {quote}2018-01-26 17:30:32,147 INFO 
> org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet: ubuntu is 
> accessing unchecked 
> [http://bcpc-vm3.bcpc.example.com:46391/ws/v1/slider/publisher/exports] which 
> is the app master GUI of application_1516910361403_0094 owned by ubuntu 
>  2018-01-26 17:31:13,639 WARN org.mortbay.log: 
> /proxy/application_1516910361403_0094/ws/v1/slider/publisher/exports: 
> java.net.ConnectException: Connection timed out (Connection timed out) 
> {quote}
>  
> Note how the redirect is to 
> [http://bcpc-vm3.bcpc.example.com:46391/ws/v1/slider/publisher/exports,] 
> where as it should have been to 
> [http://f-bcpc-vm3.bcpc.example.com:46391/ws/v1/slider/publisher/exports.]  
> Renaming the host to f-bcpc-vm3 results in appropriate behavior.
>  
> perhaps *hostname.py* can be instructed to look at one of before registering 
> *yarn.nodemanager.address*
>  *yarn.nodemanager.bind-host*
>  *yarn.nodemanager.hostname*
>  
> When called in Register.py
> register = {'responseId': int(id),
>   'timestamp': timestamp,
>   'label': self.config.getLabel(),
>   *'publicHostname': hostname.public_hostname(),*
>   'agentVersion': version,
>   'actualState': actualState,
>   'expectedState': expectedState,
>   'allocatedPorts': allocated_ports,
>   'logFolders': log_folders,
>   'tags': tags
>  }



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