HealthCheck NoClassDefFoundError on WF 24

[Claudio Weiler]

Hi,

In WildFly 24 I can't use health probes (@Readiness, @Liveness) because of class loading issue with interface org.eclipse.microprofile.health.HealthCheck.

I receive a java.lang.NoClassDefFoundError.

Background:

- It works on WildFly 21;

- Using standalone.xml;

A try adding extension org.wildfly.extension.microprofile.health-smallrye without change.

Found this page: https://www.wildfly.org/news/2021/01/13/WildFly22-Final-Released/ with this note: "The MicroProfile Health and Metrics subsystems now require the presence in the config of the base health and base metrics subsystems. Users migrating from WildFly 21 or earlier should add these new extensions/subsystems to their configuration", but I don't understand what it means.

Any help apreciated, thanks!

Claudio Weiler

[Emmanuel Hugonnet]

It means that you are not using :
        <extension module="org.wildfly.extension.microprofile.health-smallrye"/>
<subsystem xmlns="urn:wildfly:microprofile-health-smallrye:2.0" security-enabled="false"
empty-liveness-checks-status="${env.MP_HEALTH_EMPTY_LIVENESS_CHECKS_STATUS:UP}"
empty-readiness-checks-status="${env.MP_HEALTH_EMPTY_READINESS_CHECKS_STATUS:UP}"/>
Take a look at standalone-microprofile.xml

Cheers,
Emmanuel

Le 10/09/2021 à 17:46, Claudio Weiler a écrit :
> Hi,
>
> In WildFly 24 I can't use health probes (@Readiness, @Liveness) because of class loading issue with interface

> *org.eclipse.microprofile.health.HealthCheck*.
>
> I receive a *java.lang.NoClassDefFoundError*.

>
> Background:
> - It works on WildFly 21;
> - Using standalone.xml;
>

> A try adding extension *org.wildfly.extension.microprofile.health-smallrye* without change.
>
> Found this page: https://www.wildfly.org/news/2021/01/13/WildFly22-Final-Released/ with this note: "/The MicroProfile Health and Metrics

> subsystems now require the presence in the config of the base health and base metrics subsystems. Users migrating from WildFly 21 or

> earlier should add these new extensions/subsystems to their configuration/", but I don't understand what it means.

>
> Any help apreciated, thanks!
>
> Claudio Weiler

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[Claudio Weiler]

Thanks Emmanuel!

The subsystem snippet was the issue.