Spring Boot - Standalone Tomcat / External logback file ignored

Question

I have created a Spring Boot application with version 1.2.8 where I'm using an external Tomcat Container for deployment.

In the deployment archive .jar I have a logback.xml with default values as follows:

<configuration scan="true">

    <include resource="org/springframework/boot/logging/logback/base.xml"/>

    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <charset>utf-8</charset>
            <Pattern>%d{HH:mm:ss.SSS} [%-4p] %-4c \n\t%m%n</Pattern>
        </encoder>
    </appender>

    <appender name="ROLLING" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- rollover daily -->
            <fileNamePattern>${user.dir}/logs/app-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy
                    class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <!-- or whenever the file size reaches 100MB -->
                <maxFileSize>5MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <maxHistory>10</maxHistory>
        </rollingPolicy>

        <encoder>
            <charset>UTF-8</charset>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} - [%-30logger{0}] - [%-5p] -%X{traceInfo} \n\t%m%n</pattern>
        </encoder>
    </appender>

    <root level="INFO" >
        <appender-ref ref="ROLLING"/>
    </root>

</configuration>

Now in my external Tomcat I have my application.properties and logback in my $CATALINA_BASE/lib folder.

Since these files are already on the classpath. The logging.config property by default is set to classpath:logback.xml . So the logback.xml located there should be visible but it is ignored.

I have also tried an absolute path

logging.config=C:\\\\myuser\\\\tomcat\\\\lib\\\\logback.xml

which is also ignored.

I'm trying for example to override logging level with the external logback.xml like this:

<configuration scan="true">

    <root level="DEBUG" >
        <appender-ref ref="CONSOLE"/>
        <appender-ref ref="ROLLING"/>
    </root>

</configuration>

Any ideas?

Answer 1

In your project source ensure that logback.xml is in a classpath folder.

So if your project is a web project named sampleweb your logback.xml should go

src/main/resources

You should not have to configure tomcat externally.