medium-maven-settings-sonar.xml

<settings>
    <pluginGroups>
        <pluginGroup>org.sonarsource.scanner.maven</pluginGroup>
    </pluginGroups>
    <profiles>
        <profile>
            <id>sonar</id>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
            <properties>
                <!-- Enter your SonarQube instance URL here -->
                <sonar.host.url>http://localhost:9000</sonar.host.url>
            </properties>
        </profile>
     </profiles>
</settings>