O.s.cloud.commons.util.inetutils Cannot Determine Local Hostname Access

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:

hostname cat /etc/hosts | grep $(hostname) ip addr show If the second command returns nothing, your machine doesn't know its own hostname. Fix 1: Set a Preferred Network Interface (Recommended) Tell Spring Cloud exactly which interface or address to use: particularly in Docker

services: my-app: hostname: my-app extra_hosts: - "my-app:127.0.0.1" Define a hostAliases or ensure your pod spec sets a proper hostname: or custom network environments

If you’ve ever worked with Spring Cloud, particularly in Docker, Kubernetes, or custom network environments, you might have stumbled upon this frustrating warning or error during application startup: particularly in Docker

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