Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-12 Thread Laxmikant Upadhyay
ly 2 > nodes in each of the 3 racks? > > > > - Justin Sanciangco > > > > > > *From: *Alexander Dejanovski > *Reply-To: *"user@cassandra.apache.org" > *Date: *Tuesday, March 12, 2019 at 10:56 AM > *To: *user > *Subject: *Re: Changing existin

Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-12 Thread Justin Sanciangco
2 nodes in each of the 3 racks? - Justin Sanciangco From: Alexander Dejanovski Reply-To: "user@cassandra.apache.org" Date: Tuesday, March 12, 2019 at 10:56 AM To: user Subject: Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-12 Thread Alexander Dejanovski
t; > > *From: *Laxmikant Upadhyay > *Reply-To: *"user@cassandra.apache.org" > *Date: *Monday, March 11, 2019 at 10:52 PM > *To: *"user@cassandra.apache.org" > *Subject: *Re: Changing existing Cassandra cluster from single rack > configuration to multi racks configurati

Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-12 Thread Jeff Jirsa
On Tue, Mar 12, 2019 at 5:28 PM Justin Sanciangco wrote: > I would recommend that you do not go into a 3 rack single dc > implementation with only 6 nodes. If a node goes down in this situation, > the node that is paired with the node that is downed will have to service > all of the load instead

Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-12 Thread Justin Sanciangco
te: Monday, March 11, 2019 at 10:52 PM To: "user@cassandra.apache.org" Subject: Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration Hi Alex, Regarding your below point the admin need to take care of temporary uneven distribution of data uti

Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-11 Thread Laxmikant Upadhyay
Hi Alex, Regarding your below point the admin need to take care of temporary uneven distribution of data util the entire process is done: "If you can't, then I guess you can for each node (one at a time), decommission it, wipe it clean and re-bootstrap it after setting the appropriate rack." I

Re: Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-06 Thread Alexander Dejanovski
Hi Manish, the best way, if you have the opportunity to easily add new hardware/instances, is to create a new DC with racks and switch traffic to the new DC when it's ready (then remove the old one). My co-worker Alain just wrote a very handy blog post on that technique :

Changing existing Cassandra cluster from single rack configuration to multi racks configuration

2019-03-06 Thread manish khandelwal
We have a 6 node Cassandra cluster in which all the nodes are in same rack in a dc. We want to take advantage of "multi rack" cluster (example: parallel upgrade on all the nodes in same rack without downtime). I would like to know what is the recommended process to change an existing cluster with