Re: Cassandra Client authentication and system table replication question

2014-04-30 Thread Julien Campan
Hi Anand, Yes you should change the replication factor of the system_auth keyspace. By default it is RF = 1 and it s very dangerous in production. If you loose one node an user can loose all access.(it is a SPOF) You should use a multi DC replication for this keyspace. Regards, Julien 2014-04

Re: Cassandra Client authentication and system table replication question

2014-04-29 Thread Anand Somani
Correction credentials are stored in the system_auth table, so it is ok/recommended to change the replication factor of that keyspace? On Tue, Apr 29, 2014 at 10:41 PM, Anand Somani wrote: > Hi > > We have enabled cassandra client authentication and have set new user/pass > per keyspace. As I u

Cassandra Client authentication and system table replication question

2014-04-29 Thread Anand Somani
Hi We have enabled cassandra client authentication and have set new user/pass per keyspace. As I understand user/pass is stored in the system table, do we need to change the replication factor of the system table so this data is replicated? The cluster is going to be multi-dc. Thanks Anand

Re: Replication Question

2013-03-05 Thread Sylvain Lebresne
On Mon, Mar 4, 2013 at 9:53 PM, Kanwar Sangha wrote: > Hi – If I configure a RF across 2 Data centres as below and assuming 3 > nodes per Data centre. > > ** ** > > DC1: 2, DC2:2 > > ** ** > > I do a write with consistency level – local_quorum which ensures that > there is no inter DC

RE: Replication Question

2013-03-04 Thread Kanwar Sangha
Reads also ? From: Kanwar Sangha [mailto:kan...@mavenir.com] Sent: 04 March 2013 14:54 To: user@cassandra.apache.org Subject: Replication Question Hi - If I configure a RF across 2 Data centres as below and assuming 3 nodes per Data centre. DC1: 2, DC2:2 I do a write with consistency level

Replication Question

2013-03-04 Thread Kanwar Sangha
Hi - If I configure a RF across 2 Data centres as below and assuming 3 nodes per Data centre. DC1: 2, DC2:2 I do a write with consistency level - local_quorum which ensures that there is no inter DC latency. Now say 2 nodes in DC1 crash and I am doing a read with CL = One. Will it return fail

Cassandra 0.7.* replication question

2011-03-17 Thread Oleg Tsvinev
I wonder what it the right way to configure replication in Cassandra cluster. I need to have 3 copies of my data in a cluster consisting of 6 nodes. 3 of these nodes are in one datacenter - let's call it DC1 - and 3 in another, DC2. There is a significant latency between these datacenters and orig