On Mon, Apr 19, 2010 at 2:03 PM, Lee Parker <l...@socialagency.com> wrote: > I am working on finalizing our backup and restore procedures for a cassandra > cluster running on EC2. I understand based on the wiki that in order to > replace a single node, I don't actually need to put data on that node. I > just need to bootstrap the new node into the cluster and it will get data > from the other nodes. However, would is speed up the process if that node > already has the data from the node it is replacing?
No, that would speed up repair, but not bootstrap. See the section on failure recovery in http://wiki.apache.org/cassandra/Operations > Also, what do I do if > the entire cluster goes down? I am planning to snapshot the data each night > for each node. Should I save the system keyspace snapshots? Yes, since that is where the token is stored. > Is it > problematic to bring the cluster back up with new ips on each node, but the > same tokens as before? No. Just make sure all the old instances are down, before bringing up instances w/ new ips. -Jonathan
