[troubleshooting guide]: Pass the database password on every connection (redis-cli -a, or the password field in the client config). If you use a user other than default, send AUTH username password, because AUTH with a bare password only authenticates the default user. Confirm TLS is on when the subscription requires it (rediss scheme), since a plaintext connection to a TLS-only endpoint can fail at auth too.

Context: Commands against a Redis Cloud database return NOAUTH Authentication required even though the endpoint is reachable. Redis Cloud databases always require authentication with the database password.