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From Maki Watanabe <>
Subject Re: Limit what nodes are writeable
Date Mon, 11 Jul 2011 14:08:37 GMT
Cassandra has authentication interface, but doesn't have authorization.
So you need to implement authorization in your application layer.


2011/7/11 David McNelis <>:
> I've been looking in the documentation and haven't found anything about
> this...  but is there support for making a node  read-only?
> For example, you have a cluster set up in two different data centers / racks
> / whatever, with your replication strategy set up so that the data is
> redundant between the two places.  In one of the places all of the incoming
> data will be  processed and inserted into your cluster.  In the other data
> center you plan to allow people to run analytics, but you want to restrict
> the permissions so that the people running analytics can connect to
> Cassandra in whatever way makes the most sense for them, but you don't want
> those people to be able to edit/update data.
> Is it currently possible to configure your cluster in this manner?  Or would
> it only be possible through a third-party solution like wrapping one of the
> access libraries in a way that does not support write operations.
> --
> David McNelis
> Lead Software Engineer
> Agentis Energy
> o: 630.359.6395
> c: 219.384.5143
> A Smart Grid technology company focused on helping consumers of energy
> control an often under-managed resource.


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