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https://issues.apache.org/jira/browse/YARN-1994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14903614#comment-14903614
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Arpit Agarwal commented on YARN-1994:
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bq. Is it assumed that NM_BIND_HOST is configured to specific IP then
NM_ADDRESS is also configured to the same IP ?
Hi [~Naganarasimha], if NM_BIND_HOST is an IP address other than 0.0.0.0, then
NM_ADDRESS should be set to a host that resolves to that address. Think of
NM_BIND_HOST as the server side setting and NM_ADDRESS as a client side
setting. If they are different the client cannot connect.
I don't think we have tested setting NM_BIND_HOST to anything other than
0.0.0.0. In hindsight it may have been simpler to expose a boolean setting like
NM_BIND_WILDCARD.
bq. May be this a layman question why is it required to bind to all/multiple
interfaces ?
Depending on the routing and DNS configs, the client may connect on a different
interface than the one bound by the server. Listening on all interfaces ensures
connectivity.
> Expose YARN/MR endpoints on multiple interfaces
> -----------------------------------------------
>
> Key: YARN-1994
> URL: https://issues.apache.org/jira/browse/YARN-1994
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: nodemanager, resourcemanager, webapp
> Affects Versions: 2.4.0
> Reporter: Arpit Agarwal
> Assignee: Craig Welch
> Fix For: 2.6.0
>
> Attachments: YARN-1994.0.patch, YARN-1994.1.patch,
> YARN-1994.11.patch, YARN-1994.11.patch, YARN-1994.12.patch,
> YARN-1994.13.patch, YARN-1994.14.patch, YARN-1994.15-branch2.patch,
> YARN-1994.15.patch, YARN-1994.2.patch, YARN-1994.3.patch, YARN-1994.4.patch,
> YARN-1994.5.patch, YARN-1994.6.patch, YARN-1994.7.patch
>
>
> YARN and MapReduce daemons currently do not support specifying a wildcard
> address for the server endpoints. This prevents the endpoints from being
> accessible from all interfaces on a multihomed machine.
> Note that if we do specify INADDR_ANY for any of the options, it will break
> clients as they will attempt to connect to 0.0.0.0. We need a solution that
> allows specifying a hostname or IP-address for clients while requesting
> wildcard bind for the servers.
> (List of endpoints is in a comment below)
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