Hello I am in the process of upgrading a 6-node cluster - basically the plan is to add 6 nodes, then remove the original 6 nodes. In the interest of speeding things up, is it possible/advisable/safe to add more than one node at a time? Let’s say:
- Nodes 1-6 are the original nodes, and are up and running, no migrations at present
- I install and start aerospike on node 7, migrations start
- Before migrations have completed for node 7, I install and start aerospike on node 8, then 9, etc.
Is this safe, or should I wait for migrations to complete on one node, before proceeding to the next?
I know that to prevent data loss I need to do this one at a time on the way down, when removing nodes.