Graceful way to change seed node

ScyllaDB
,
1

Installation details
#ScyllaDB version: 5.1
#Cluster size: 23 node
os : Ubuntu

hello
I have question about to change seed node
if I have 9 node
node1 ~ node9

the node 1-3 is seed node

if I want change seed node to node 7-9

I thank step is

  1. first change node 7-9
    scylla.yaml seed node config use node 1-3,7-9

  2. then change node 1-6
    scylla.yaml seed node config use node 7-9

  3. last change node 7-9
    scylla.yaml seed node config use node 7-9

is that right ?

2

Look good.
The key is to validate there at least one seed node available when you add a new node. See here for more