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From "Ariel Weisberg (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (CASSANDRA-7544) Allow storage port to be configurable per node
Date Thu, 01 Feb 2018 17:10:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-7544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ariel Weisberg updated CASSANDRA-7544:
--------------------------------------
    Comment: was deleted

(was: bq. ISTM that a discussion on the dev list is warranted.  That's a pretty big "side
effect" of this patch.

It's not clear that it is? It sounds like you know something? I'd be happy to accept a patch
)

> Allow storage port to be configurable per node
> ----------------------------------------------
>
>                 Key: CASSANDRA-7544
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7544
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Sam Overton
>            Assignee: Ariel Weisberg
>            Priority: Major
>             Fix For: 4.0
>
>
> Currently storage_port must be configured identically on all nodes in a cluster and it
is assumed that this is the case when connecting to a remote node.
> This prevents running in any environment that requires multiple nodes to be able to bind
to the same network interface, such as with many automatic provisioning/deployment frameworks.
> The current solutions seems to be
> * use a separate network interface for each node deployed to the same box. This puts
a big requirement on IP allocation at large scale.
> * allow multiple clusters to be provisioned from the same resource pool, but restrict
allocation to a maximum of one node per host from each cluster, assuming each cluster is running
on a different storage port.
> It would make operations much simpler in these kind of environments if the environment
provisioning the resources could assign the ports to be used when bringing up a new node on
shared hardware.
> The changes required would be at least the following:
> 1. configure seeds as IP:port instead of just IP
> 2. gossip the storage port as part of a node's ApplicationState
> 3. refer internally to nodes by hostID instead of IP, since there will be multiple nodes
with the same IP
> (1) & (2) are mostly trivial and I already have a patch for these. The bulk of the
work to enable this is (3), and I would structure this as a separate pre-requisite patch.




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