O.s.cloud.commons.util.inetutils Cannot Determine Local Hostname <Cross-Platform>

spec: hostname: my-app subdomain: default-subdomain hostAliases: - ip: "127.0.0.1" hostnames: - "my-app" The "cannot determine local hostname" error is rarely a critical failure—your app will still start. But in distributed systems, relying on localhost for service registration, logging, or link generation will break cross-service communication.

Resolving "InetUtils Cannot Determine Local Hostname" in Spring Cloud Commons relying on localhost for service registration

spring: cloud: inetutils: ignored-interfaces: - docker0 - veth.* - utun.* # For macOS VPN interfaces When you don't care about dynamic resolution and just want the error gone: relying on localhost for service registration

spring.cloud.inetutils.preferred-networks[0]=192.168.0.0/24 Sometimes you need to tell Spring Cloud what not to pick: relying on localhost for service registration

spring: cloud: inetutils: default-hostname: my-service-01 Or via JVM argument: