# cat config/hz-external-logback.xml
<included>
  <appender name="ELASTIC" class="com.internetitem.logback.elasticsearch.ElasticsearchAppender">
    <url>${HAZELCAST_LOG_ES_PROTO}://${HAZELCAST_LOG_ES_USER}:${HAZELCAST_LOG_ES_PASS}@${HAZELCAST_LOG_ES_HOST}:${HAZELCAST_LOG_ES_PORT}/${HAZELCAST_LOG_ES_URL}</url>
    <index>${HAZELCAST_LOG_ES_INDEX}-%date{yyyy-MM-dd}</index>
    <type>tester</type>
    <loggerName>es-logger</loggerName> <!-- optional -->
    <errorLoggerName>es-error-logger</errorLoggerName> <!-- optional -->
    <connectTimeout>30000</connectTimeout> <!-- optional (in ms, default 30000) -->
    <errorsToStderr>false</errorsToStderr> <!-- optional (default false) -->
    <includeCallerData>false</includeCallerData> <!-- optional (default false) -->
    <logsToStderr>false</logsToStderr> <!-- optional (default false) -->
    <maxQueueSize>104857600</maxQueueSize> <!-- optional (default 104857600) -->
    <maxRetries>3</maxRetries> <!-- optional (default 3) -->
    <readTimeout>30000</readTimeout> <!-- optional (in ms, default 30000) -->
    <sleepTime>250</sleepTime> <!-- optional (in ms, default 250) -->
    <rawJsonMessage>false</rawJsonMessage> <!-- optional (default false) -->
    <includeMdc>false</includeMdc> <!-- optional (default false) -->
    <maxMessageSize>100</maxMessageSize> <!-- optional (default -1 -->
    <authentication class="com.internetitem.logback.elasticsearch.config.BasicAuthentication" /> <!-- optional -->
    <properties>
      <property>
        <name>host</name>
        <value>${HOSTNAME}</value>
        <allowEmpty>false</allowEmpty>
      </property>
      <property>
        <name>severity</name>
        <value>%level</value>
      </property>
      <property>
        <name>thread</name>
        <value>%thread</value>
      </property>
      <property>
        <name>stacktrace</name>
        <value>%ex</value>
      </property>
      <property>
        <name>logger</name>
        <value>%logger</value>
      </property>
    </properties>
    <headers>
      <header>
        <name>Content-Type</name>
        <value>application/json</value>
      </header>
    </headers>
  </appender>
  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%date{HH:mm:ss.SSS} [%thread] %-5level %logger{15}#%line %msg\n</pattern>
    </encoder>
  </appender>
  <root>
    <level value="info"/>
    <appender-ref ref="ELASTIC"/>
    <appender-ref ref="STDOUT"/>
  </root>
</included>