Thank you Anthony and Jonathan. To add new ring it doesn't have to be same version of Cassandra right. For ex dse 5.12 which is 3.11.0 has stables with mc name and apache 3.11.3 also uses sstables name with mc . We should be still able to add it to the ring correct
On Wed, May 29, 2019, 9:55 PM Goetz, Anthony <anthony_goe...@comcast.com> wrote: > My team migrated from DSE to OSS a few years ago by doing datacenter > switch. You will need to update replication strategy for all keyspaces > that are using Everywhere to NetworkTopologyStrategy before adding any OSS > nodes. As Jonathan mentioned, DSE nodes will revert this change on > restart. To account for this, we modified our init script to call a cql > script that would make sure the keyspaces were set back to > NetworkTopologyStrategy. > > > > High Level Plan: > > - Find DSE Cassandra binary version > - Review config to make sure you are not using any DSE specific > settings > - Update replication strategy on keyspaces using Everywhere to > NetworkTopologyStrategy > - Add OSS DC using same binary version as DSE > - Migrate clients to new OSS DC > - Decommission DSE DC > > > > Note: OpsCenter will stop working once you add OSS nodes. > > > > *From: *Jonathan Koppenhofer <j...@koppedomain.com> > *Reply-To: *Cassandra User List <user@cassandra.apache.org> > *Date: *Wednesday, May 29, 2019 at 6:45 PM > *To: *Cassandra User List <user@cassandra.apache.org> > *Subject: *[EXTERNAL] Re: Sstableloader > > > > Has anyone tried to do a DC switch as a means to migrate from Datastax to > OSS? This would be the safest route as the ability to revert back to > Datastax is easy. However, I'm curious how the dse_system keyspace would be > replicated to OSS using their custom Everywhere strategy. You may have to > change the to Network topology strategy before firing up OSS nodes. Also, > keep in mind if you restart any DSE nodes, it will revert that keyspace > back to EverywhereStrategy. > > > > I also posted a means to migrate in place on this mailing list a few > months back (thanks for help from others on the mailing list), but it is a > little more involved and risky. Let me know if you can't find it, and I'll > dig it up. > > > > Finally, DSE 5.0 is open source equivalent 3.0.x. recommend you go to OSS > 3.0 then up to 3.11. > > On Wed, May 29, 2019, 5:56 PM Nitan Kainth <nitankai...@gmail.com> wrote: > > If cassandra version is same, it should work > > > > Regards, > > Nitan > > Cell: 510 449 9629 > > > On May 28, 2019, at 4:21 PM, Rahul Reddy <rahulreddy1...@gmail.com> wrote: > > Hello, > > > > Does sstableloader works between datastax and Apache cassandra. I'm trying > to migrate dse 5.0.7 to Apache 3.11.1 ? > >
