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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-12954) Ability impaired using HBase on multihomed hosts
Date Wed, 01 Apr 2015 18:23:55 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12954?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu resolved HBASE-12954.
----------------------------
    Resolution: Fixed

Thanks for the review, Esteban.

> Ability impaired using HBase on multihomed hosts
> ------------------------------------------------
>
>                 Key: HBASE-12954
>                 URL: https://issues.apache.org/jira/browse/HBASE-12954
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.4
>            Reporter: Clay B.
>            Assignee: Ted Yu
>            Priority: Minor
>             Fix For: 2.0.0, 1.1.0
>
>         Attachments: 12954-addendum.txt, 12954-branch-1-v14.txt, 12954-v1.txt, 12954-v10.txt,
12954-v11.txt, 12954-v12.txt, 12954-v12.txt, 12954-v12.txt, 12954-v13.txt, 12954-v14.txt,
12954-v7.txt, 12954-v8.txt, Hadoop Three Interfaces.png
>
>
> For HBase clusters running on unusual networks (such as NAT'd cloud environments or physical
machines with multiple IP's per network interface) it would be ideal to have a way to both
specify:
> # which IP interface to which HBase master or region-server will bind
> # what hostname HBase will advertise in Zookeeper both for a master or region-server
process
> While efforts such as HBASE-8640 go a long way to normalize these two sources of information,
it is not possible in the current design of the properties available to an administrator for
these to be unambiguously specified.
> One has been able to request {{hbase.master.ipc.address}} or {{hbase.regionserver.ipc.address}}
but one can not specify the desired HBase {{hbase.master.hostname}}. (It was removed in HBASE-1357,
further I am unaware of a region-server equivalent.)
> I use a configuration management system to generate all of my configuration files on
a per-machine basis. As such, an option to generate a file specifying exactly which hostname
to use would be helpful.
> Today, specifying the bind address for HBase works and one can use an HBase-only DNS
for faking what to put in Zookeeper but this is far from ideal. Network interfaces have no
intrinsic IP address, nor hostname. Specifing a DNS server is awkward as the DNS server may
differ from the system's resolver and is a single IP address. Similarly, on hosts which use
a transient VIP (e.g. through keepalived) for other services, it means there's a seemingly
non-deterministic hostname choice made by HBase depending on the state of the VIP at daemon
start-up time.
> I will attach two networking examples I use which become very difficult to manage under
the current properties.



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