External Vault users using the default Vault namespace will see the error /usr/bin/vault-external-configure: line 37: VAULT_NAMESPACE: unbound variable in the tfe-vault logs when attempting to start Terraform Enterprise. This error prevents Terraform Enterprise from starting. To resolve this, run tfe-admin app-config -k extern_vault_namespace -v 'root' and restart Terraform Enterprise. This does not affect External Vault users that use a custom Vault namespace.
All container names now follow the same naming convention: tfe-<service>. If you have tooling that identifies containers by name, make sure this tooling is updated to reflect the new naming convention.