[jira] [Commented] (FLINK-15911) Flink does not work over NAT

["Bo Cui (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-15911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17305826#comment-17305826 ] 

Bo Cui commented on FLINK-15911:
--------------------------------

[~xintongsong] in yarn cluster, what are  bind-address of JM&TM？ It is not a good practice to listen on all interfaces(0.0.0.0).

> Flink does not work over NAT
> ----------------------------
>
>                 Key: FLINK-15911
>                 URL: https://issues.apache.org/jira/browse/FLINK-15911
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Coordination
>    Affects Versions: 1.10.0
>            Reporter: Till Rohrmann
>            Assignee: Xintong Song
>            Priority: Blocker
>              Labels: pull-request-available, usability
>             Fix For: 1.11.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Currently, it is not possible to run Flink over network address translation. The problem is that the Flink processes do not allow to specify separate bind and external ports. Moreover, the {{TaskManager}} tries to resolve the given {{taskmanager.host}} which might not be resolvable. This breaks NAT or docker setups where the external address is not resolvable from within the container/internal network.



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