WildFly 15 default configurations includes new microprofile related extensions and subsystems, which should be added to all server configs migrated to such server.

The following extensions should be added to standalone and domain configurations:

• org.wildfly.extension.microprofile.config-smallrye
• org.wildfly.extension.microprofile.health-smallrye
• org.wildfly.extension.microprofile.metrics-smallrye
• org.wildfly.extension.microprofile.opentracing-smallrye

The following subsystem configurations should be added to all standalone and domain profiles configurations:

  <subsystem xmlns="urn:wildfly:microprofile-config-smallrye:1.0"/>
  <subsystem xmlns="urn:wildfly:microprofile-health-smallrye:1.0" security-enabled="false"/>
  <subsystem xmlns="urn:wildfly:microprofile-metrics-smallrye:1.0" security-enabled="false" exposed-subsystems="*"/>
  <subsystem xmlns="urn:wildfly:microprofile-opentracing-smallrye:1.0"/>