[jira] [Created] (KUDU-1988) Add advertised RPC host/port server configuration

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

Dan Burkert created KUDU-1988:
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             Summary: Add advertised RPC host/port server configuration
                 Key: KUDU-1988
                 URL: https://issues.apache.org/jira/browse/KUDU-1988
             Project: Kudu
          Issue Type: Improvement
          Components: server
    Affects Versions: 1.3.0
            Reporter: Dan Burkert


In some environments the externally accessible host/port is not the same as the bind host/port.  This commonly happens with containers.  It would be nice to have a `--rpc-advertised-addresses` configuration flag that would replace the `--rpc-bind-addresses` config when a server gives out it's own RPC address.

Some quick notes I wrote on a potential implementation on Slack:

As far as where it would be added - I think you want to go one level down from the heartbeater into the {{RpcServer}}.  {{RpcServer}} already has a {{GetBoundAddresses}} method, so maybe it could have a `GetAdvertisedAddresses` method and a corresponding {{rpc_advertised_addresses}} gflag as well ({{rpc_bind_addresses}} is also defined in rpc_server.cc).  Then, the heartbeater could be changed to use {{GetAdvertisedAddresses}} instead of {{GetBoundAddress}}.

I’m not sure if there needs to be a corresponding change to masters, I think it may be enough to just use the advertised hostname for clients and for {{--master-addresses}} configs

hmm well it would need to change for the {{GetMasterRegistration}} RPC



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