conf/logback.xml

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

<configuration>
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="net.logstash.logback.encoder.LogstashEncoder" />
    </appender>

    <appender name="ASYNCSTDOUT" class="ch.qos.logback.classic.AsyncAppender">
        <appender-ref ref="STDOUT" />
    </appender>

    <logger name="com.gu.contentapi.sanity" level="INFO"/>
    <logger name="com.gu.contentapi.sanity.support.RealCloudWatchReporter" level="WARN"/>

    <root level="WARN">
        <appender-ref ref="STDOUT" />
    </root>

</configuration>