Seed node doesn’t bootstrap so if new node were to act as seed node, official recommendations are to boot strap ‘new’ node first , only after that list that node as seed.
Seed nodes are usually same across cluster nodes. You can designate 2 nodes as seed per dc in order to mitigate network latency for bootstrapping node ie. Say you have 2dcs you designate 4 nodes (in total) as seed – 2 from each dc. ~Asad From: Sergio [mailto:lapostadiser...@gmail.com] Sent: Tuesday, February 25, 2020 6:19 PM To: user@cassandra.apache.org Cc: erik.rami...@datastax.com Subject: Re: New seed node in the cluster immediately UN without passing for UJ state Hi Erick! Just follow up to your statement: Limiting the seeds to 2 per DC means : A) Each node in a DC has at least 2 seeds and those seeds belong to the same DC or B) Each node in a DC has at least 2 seeds even across different DC Thanks, Sergio Il giorno gio 13 feb 2020 alle ore 19:46 Erick Ramirez <erick.rami...@datastax.com<mailto:erick.rami...@datastax.com>> ha scritto: Not a problem. And I've just responded on the new thread. Cheers! 👍
