New 3 node cluster never starts

[joshbartley]

Using the instructions below. The cluster fails to start failed to register messages.

https://docs.redpanda.com/current/deploy/deployment-option/self-hosted/manual/production/production-deployment/

Feb  8 15:41:36 kafka01 rpk[4008]: INFO  2024-02-08 15:41:36,366 [shard 0:main] cluster - cluster_discovery.cc:147 - Requesting node ID  for node UUID {7df73fec-2e2f-4432-b74c-0a6a596a46b7} from {host: 172.16.5.145, port: 33145}
Feb  8 15:41:36 kafka01 rpk[4008]: WARN  2024-02-08 15:41:36,367 [shard 0:main] cluster - cluster_discovery.cc:179 - Error registering UUID {7df73fec-2e2f-4432-b74c-0a6a596a46b7}: rpc::errc::unknown(6), retrying
Feb  8 15:41:36 kafka01 rpk[4008]: INFO  2024-02-08 15:41:36,367 [shard 0:main] cluster - cluster_discovery.cc:147 - Requesting node ID  for node UUID {7df73fec-2e2f-4432-b74c-0a6a596a46b7} from {host: 172.16.5.146, port: 33145}
Feb  8 15:41:36 kafka01 rpk[4008]: WARN  2024-02-08 15:41:36,368 [shard 0:main] cluster - cluster_discovery.cc:179 - Error registering UUID {7df73fec-2e2f-4432-b74c-0a6a596a46b7}: rpc::errc::unk

Should empty_seed_starts_cluster be true for one of the nodes or is there something else that needs configured?