Hi, I never got any response here, but just wanted to share that I went to a Cassandra meet-up in Stockholm yesterday where I talked to two knowledgable Cassandra people that verified that the approach below should work. The most important thing is that the backup must be fully imported before gc_grace_seconds after when the backup is taken.
As of me, I managed to a get a more stable VPN setup and did not have to go down this path. Cheers, Jens On Mon, Apr 18, 2016 at 10:15 AM Jens Rantil <jens.ran...@tink.se> wrote: > Hi, > > I am provisioning a new datacenter for an existing cluster. A rather shaky > VPN connection is hindering me from making a "nodetool rebuild" bootstrap > on the new DC. Interestingly, I have a full fresh database snapshot/backup > at the same location as the new DC (transferred outside of the VPN). I am > now considering the following approach: > > 1. Make sure my clients are using the old DC. > 2. Provision the new nodes in new DC. > 3. ALTER the keyspace to enable replicas on the new DC. This will > start replicating all writes from old DC to new DC. > 4. Before gc_grace_seconds after operation 3) above, use sstableloader > to stream my backup to the new nodes. > 5. For safety precaution, do a full repair. > > Could you see any issues with doing this? > > Cheers, > Jens > -- > > Jens Rantil > Backend Developer @ Tink > > Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden > For urgent matters you can reach me at +46-708-84 18 32. > -- Jens Rantil Backend Developer @ Tink Tink AB, Wallingatan 5, 111 60 Stockholm, Sweden For urgent matters you can reach me at +46-708-84 18 32.
