Arvados

When doing a fresh install, I see these WARNING messages in the output

Setting up database...ESC[33mWARNESC[0m[2021-02-09T11:02:21.924396390Z] Clusters.xxxxx.ManagementToken: secret token is not set (use 32+ random characters from a-z, A-Z, 0-9) 
ESC[33mWARNESC[0m[2021-02-09T11:02:21.924472002Z] Clusters.xxxxx.SystemRootToken: secret token is not set (use 32+ random characters from a-z, A-Z, 0-9) 
ESC[33mWARNESC[0m[2021-02-09T11:02:21.924616505Z] Clusters.xxxxx.Collections.BlobSigningKey: secret token is not set (use 32+ random characters from a-z, A-Z, 0-9)

My cluster config has 64 chars alphanumeric entries for those tokens & keys in the cluster I'm deploying, but I guess those are pre-flight checks from arvados/lib/config/config.default.yml?