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authorraghavendra talur <raghavendra.talur@gmail.com>2015-08-20 15:09:31 +0530
committerHumble Devassy Chirammal <humble.devassy@gmail.com>2015-08-31 02:27:22 -0700
commit9e9e3c5620882d2f769694996ff4d7e0cf36cc2b (patch)
tree3a00cbd0cc24eb7df3de9b2eeeb8d42ee9175f88 /Feature Planning/GlusterFS 4.0/Split Network.md
parentf6055cdb4dedde576ed8ec55a13814a69dceefdc (diff)
Create basic directory structure
All new features specs go into in_progress directory. Once signed off, it should be moved to done directory. For now, This change moves all the Gluster 4.0 feature specs to in_progress. All other specs are under done/release-version. More cleanup required will be done incrementally. Change-Id: Id272d301ba8c434cbf7a9a966ceba05fe63b230d BUG: 1206539 Signed-off-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-on: http://review.gluster.org/11969 Reviewed-by: Humble Devassy Chirammal <humble.devassy@gmail.com> Reviewed-by: Prashanth Pai <ppai@redhat.com> Tested-by: Humble Devassy Chirammal <humble.devassy@gmail.com>
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-Goal
-----
-
-Better support for multiple networks, especially front-end vs. back-end.
-
-Summary
--------
-
-GlusterFS generally expects that all clients and servers use a common
-set of network names and/or addresses. For many users, having a separate
-network exclusively for servers is highly desirable for both performance
-reasons (segregating administrative traffic and/or second-hop NFS
-traffic from ongoing user I/O) and security reasons (limiting
-administrative access to the private network). While such configurations
-can already be created with routing/iptables trickery, full and explicit
-support would be a great improvement.
-
-Owners
-------
-
-Jeff Darcy <jdarcy@redhat.com>
-
-Current status
---------------
-
-Proposed, awaiting summit for approval.
-
-Related Feature Requests and Bugs
----------------------------------
-
-One proposal for the high-level syntax and semantics was made [on the
-mailing
-list](http://www.gluster.org/pipermail/gluster-users/2014-November/019463.html).
-
-Detailed Description
---------------------
-
-At the very least, we need to be able to define and keep track of
-multiple names/addresses for the same node, one used on the back-end
-network e.g. for "peer probe" and and NFS and the other used on the
-front-end network by native-protocol clients. The association can be
-done via the node UUID, but we still need a way for the user to specify
-which name/address is to be used for which purpose.
-
-Future enhancements could include multiple front-end (client) networks,
-and network-specific access control.
-
-Benefit to GlusterFS
---------------------
-
-More flexible network network topologies, potentially enhancing
-performance and/or security for some deployments.
-
-Scope
------
-
-### Nature of proposed change
-
-The information in /var/lib/glusterd/peers/\* must be enhanced to
-include multiple names/addresses per peer, plus tags for roles
-associated with each address/name.
-
-The volfile-generation code must be enhanced to generate volfiles for
-each purpose - server, native client, NFS proxy, self-heal/rebalance -
-using the names/addresses appropriate to that purpose.
-
-### Implications on manageability
-
-CLI and GUI support must be added for viewing/changing the addresses
-associated with each server and the roles associated with each address.
-
-### Implications on presentation layer
-
-None. The changes should be transparent to users.
-
-### Implications on persistence layer
-
-None.
-
-### Implications on 'GlusterFS' backend
-
-None.
-
-### Modification to GlusterFS metadata
-
-See [nature of proposed change](#Nature_of_proposed_change "wikilink").
-
-### Implications on 'glusterd'
-
-See [nature of proposed change](#Nature_of_proposed_change "wikilink").
-
-How To Test
------------
-
-Set up a physical configuration with separate front-end and back-end
-networks.
-
-Use the new CLI/GUI features to define addresses and roles split across
-the two networks.
-
-Mount a volume using each of the several volfiles that result, and
-generate some traffic.
-
-Verify that the traffic is actually on the network appropriate to that
-mount type.
-
-User Experience
----------------
-
-By default, nothing changes. If and only if a user wants to set up a
-more "advanced" split-network configuration, they'll have new tools
-allowing them to do that without having to "step outside" to mess with
-routing tables etc.
-
-Dependencies
-------------
-
-None.
-
-Documentation
--------------
-
-New documentation will be needed at both the conceptual and detail
-levels, describing how (and why?) to set up a split-network
-configuration.
-
-Status
-------
-
-In design.
-
-Comments and Discussion
------------------------
-
-Some use-cases in [Bug 764850](https://bugzilla.redhat.com/764850).
-Feedback requested. Please jump in.
-
-[Discussion on gluster-devel](https://mail.corp.redhat.com/zimbra/#16)