The tutorial is outdated and wrong. It is unfortunate that you guys do not revalidate them time by time. The Ingress "ingress-echo" is invalid: * spec.rules[0].host: Invalid value: "echo.": a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. ' example.com ', regex used for validation is ' a-z0-9 ?(\. a-z0-9 ?)*') * spec.tls[0].hosts[0]: Invalid value: "echo.": a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. ' example.com ', regex used for validation is ' a-z0-9 ?(\. a-z0-9 ?)*')