logback.xml

<configuration scan="true" scanPeriod="60 seconds">

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{ISO8601} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="SOLR" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${solr.log}/solr.log</file>

        <filter class="ch.qos.logback.access.filter.CountingFilter">
            <name>solrLogCountingFilter</name>
        </filter>

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${solr.log}/solr.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxHistory>14</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>

        <encoder>
            <pattern>%d{ISO8601} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${solr.log}/error.log</file>
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>ERROR</level>
        </filter>

        <filter class="ch.qos.logback.access.filter.CountingFilter">
            <name>errorLogCountingFilter</name>
        </filter>

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${solr.log}/error.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxHistory>14</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>

        <encoder>
            <pattern>%d{ISO8601} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="ACCESS" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${solr.log}/access.log</file>

        <filter class="ch.qos.logback.access.filter.CountingFilter">
            <name>accessLogCountingFilter</name>
        </filter>

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${solr.log}/access.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxHistory>14</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>

        <encoder>
            <pattern>%msg%n</pattern>
        </encoder>
    </appender>

    <logger name="http.access" level="INFO" additivity="false">
        <appender-ref ref="ACCESS"/>
        <appender-ref ref="STDOUT"/>
    </logger>

    <root level="info">
        <appender-ref ref="SOLR"/>
        <appender-ref ref="ERROR"/>
        <appender-ref ref="STDOUT"/>
    </root>
</configuration>