Application registers in Eureka using IP instead of hostname when its Docker container publishes port

docker spring-cloud docker-swarm spring-cloud-netflix

by explicitly setting the hostname eureka.instance.hostname=${SOME_VAR} or ignoring certain interfaces:

From the documentation: The following configuration will ignore the "docker0" interface and all interfaces that start with "veth".

application.ymlspring:  cloud:    inetutils:      ignoredInterfaces:        - docker0        - veth.*

You can also force to use only specified network addresses using list of regular expressions:

application.ymlspring:  cloud:    inetutils:      preferredNetworks:        - 192.168        - 10.0

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