upgrading to wildfly 24 log issue

[Mokhtar Ammar]

i'm trying to migrate from wildfly 19 to wildfly 24 but when i deploy my application (which was perfectly working on wildfly19) i face face those errors 

{"WFLYCTL0080: Failed services" => {"jboss.deployment.unit.\"algebraSystem-v1.1.war\".undertow-deployment" => "java.lang.RuntimeException: java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.slf4j.impl.Slf4jLoggerFactory loaded from jar:file:/F:/wildfly/modules/system/layers/base/org/slf4j/impl/main/slf4j-jboss-logmanager-1.1.0.Final.jar!/). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.slf4j.impl.Slf4jLoggerFactory

    Caused by: java.lang.RuntimeException: java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.slf4j.impl.Slf4jLoggerFactory loaded from jar:file:/F:/wildfly/modules/system/layers/base/org/slf4j/impl/main/slf4j-jboss-logmanager-1.1.0.Final.jar!/). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.slf4j.impl.Slf4jLoggerFactory

    Caused by: java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.slf4j.impl.Slf4jLoggerFactory loaded from jar:file:/F:/wildfly/modules/system/layers/base/org/slf4j/impl/main/slf4j-jboss-logmanager-1.1.0.Final.jar!/). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.slf4j.impl.Slf4jLoggerFactory"}} 

[James Perkins]

Are you trying to use logback as the log manager? If so then you should likely remove the logging subsystem from your deployment with a jboss-deployment-structure.xml.

[Mokhtar Ammar]

i'm unexperienced with wild and maven i tried to add this jboss-deployment-structure.xml :

<?xml version="1.0" encoding="UTF-8"?>

<jboss-deployment-structure>

   <deployment>

        <exclusions>

              <module name="org.slf4j" />

              <module name="org.apache.log4j" />

          </exclusions>

   </deployment>

</jboss-deployment-structure>

can you please tell me what i'm missing ? and if possible can you give me a brief  explanation .

[James Perkins]

If you're trying to use logback the simplest solution would be to exclude the logging subsystem as a whole:

<?xml version="1.0" encoding="UTF-8"?>

<jboss-deployment-structure>

    <deployment>

        <exclude-subsystems>

            <subsystem name="logging"/>

        </exclude-subsystems>

    </deployment>

</jboss-deployment-structure>

If you'd rather not do that you also need to exclude org.slf4j.impl. Another option would be to change the add-logging-api-dependencies in the logging subsystem which would apply to all deployments. See https://docs.wildfly.org/24/Admin_Guide.html#how-do-i-use-my-own-version-of-log4j of log4j, but it should be mostly the same for logback.