Author: Mohammad Mazhar Ansari
In this blog, we will try to learn how we can send logs to Logz.io from MuleSoft using HTTP Appender.
What is Logz.io?
- Logz.io provides log management and log analysis services.
- The platform combines ELK as a cloud service and machine learning to derive new insights from machine data.
Register with Logz.io:
- Go to https://logz.io/
- Click on Free Trial if you don’t have an account already

Generate Token:
- Go to https://logz.io/
- Click On Login
- Provide credentials
- Go to Gear Button -> Settings -> General

- Copy Token

Enable Custom Logging For On Premise MuleSoft Runtime:
- Go to Project
- Open src/main/resoruces/log4j2.xml
- Add below xml tag in Configuration/Appenders
<Http name="Logzio" url="http://listener.logz.io:8070/?token=kILyrCdlJyvKFeCtSyuQMgSFkCACtWdd&type=MuleSoft">
<PatternLayout pattern="{"message":"%-5p %d [%t] %c: %m"}%n" />
</Http>
- URL follow below format
Enable Custom Logging For CloudHub Application: Before enabling the logging for cloudhub application, you need to Disable CloudHub logs. By default this option is not available and you need to raise a ticket with MuleSoft for providing this option. Once you disable cloudhub logs, MuleSoft is not responsible for below mentioned things: You need to create log4j2.xml at location src/main/resources. You need to add a Http appender inlog4j.xml. Provide url to connect Logz.io with token and type of logger, source, pattern layout etc. You can add more loggers like Log4J2CloudhubLogAppender into your log4j2.xml to enable logging on the cloudhub log console of your application. Below is full log4j2.xml which can be used for your application for enabling custom logging on cloudhub and http appender for logz.io. This is how you can enable Log.io logging using HTTP Appender for MuleSoft applications.<AppenderRef ref="Logzio" />
<Http name="Logzio" url="http://listener.logz.io:8070/?token=kILyrCdlJyvKFeCtSyuQMgSFkCACtWdd&type=MuleSoft">
<PatternLayout pattern="{"message":"%-5p %d [%t] %c: %m"}%n" />
</Http>
<Log4J2CloudhubLogAppender name="CLOUDHUB"
addressProvider="com.mulesoft.ch.logging.DefaultAggregatorAddressProvider"
applicationContext="com.mulesoft.ch.logging.DefaultApplicationContext"
appendRetryIntervalMs="${sys:logging.appendRetryInterval}"
appendMaxAttempts="${sys:logging.appendMaxAttempts}"
batchSendIntervalMs="${sys:logging.batchSendInterval}"
batchMaxRecords="${sys:logging.batchMaxRecords}" memBufferMaxSize="${sys:logging.memBufferMaxSize}"
journalMaxWriteBatchSize="${sys:logging.journalMaxBatchSize}"
journalMaxFileSize="${sys:logging.journalMaxFileSize}"
clientMaxPacketSize="${sys:logging.clientMaxPacketSize}"
clientConnectTimeoutMs="${sys:logging.clientConnectTimeout}"
clientSocketTimeoutMs="${sys:logging.clientSocketTimeout}"
serverAddressPollIntervalMs="${sys:logging.serverAddressPollInterval}"
serverHeartbeatSendIntervalMs="${sys:logging.serverHeartbeatSendIntervalMs}"
statisticsPrintIntervalMs="${sys:logging.statisticsPrintIntervalMs}">
<PatternLayout pattern="[%d{MM-dd HH:mm:ss}] %-5p %c{1} [%t]: %m%n" />
</Log4J2CloudhubLogAppender>
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO" name="cloudhub"
packages="com.mulesoft.ch.logging.appender,org.apache.logging.log4j">
<Appenders>
<Log4J2CloudhubLogAppender name="CLOUDHUB"
addressProvider="com.mulesoft.ch.logging.DefaultAggregatorAddressProvider"
applicationContext="com.mulesoft.ch.logging.DefaultApplicationContext"
appendRetryIntervalMs="${sys:logging.appendRetryInterval}"
appendMaxAttempts="${sys:logging.appendMaxAttempts}"
batchSendIntervalMs="${sys:logging.batchSendInterval}"
batchMaxRecords="${sys:logging.batchMaxRecords}" memBufferMaxSize="${sys:logging.memBufferMaxSize}"
journalMaxWriteBatchSize="${sys:logging.journalMaxBatchSize}"
journalMaxFileSize="${sys:logging.journalMaxFileSize}"
clientMaxPacketSize="${sys:logging.clientMaxPacketSize}"
clientConnectTimeoutMs="${sys:logging.clientConnectTimeout}"
clientSocketTimeoutMs="${sys:logging.clientSocketTimeout}"
serverAddressPollIntervalMs="${sys:logging.serverAddressPollInterval}"
serverHeartbeatSendIntervalMs="${sys:logging.serverHeartbeatSendIntervalMs}"
statisticsPrintIntervalMs="${sys:logging.statisticsPrintIntervalMs}">
<PatternLayout pattern="[%d{MM-dd HH:mm:ss}] %-5p %c{1} [%t]: %m%n" />
</Log4J2CloudhubLogAppender>
<Http name="Logzio" url="http://listener.logz.io:8070/?token=kILyrCdlJyvKFeCtSyuQMgSFkCACtWdd&type=MuleSoft">
<PatternLayout pattern="{"message":"%-5p %d [%t] %c: %m"}%n" />
</Http>
</Appenders>
<Loggers>
<AsyncLogger name="org.mule.runtime.core.internal.processor.LoggerMessageProcessor" level="INFO" />
<AsyncLogger name="com.mulesoft.agent" level="INFO" />
<AsyncRoot level="INFO">
<AppenderRef ref="CLOUDHUB" />
<AppenderRef ref="Logzio" />
</AsyncRoot>
<AsyncLogger name="com.gigaspaces" level="ERROR" />
<AsyncLogger name="com.j_spaces" level="ERROR" />
<AsyncLogger name="com.sun.jini" level="ERROR" />
<AsyncLogger name="net.jini" level="ERROR" />
<AsyncLogger name="org.apache" level="WARN" />
<AsyncLogger name="org.apache.cxf" level="WARN" />
<AsyncLogger name="org.springframework.beans.factory" level="WARN" />
<AsyncLogger name="org.mule" level="INFO" />
<AsyncLogger name="com.mulesoft" level="INFO" />
<AsyncLogger name="org.jetel" level="WARN" />
<AsyncLogger name="Tracking" level="WARN" />
<AsyncLogger name="org.mule" level="INFO" />
<AsyncLogger name="com.mulesoft" level="INFO" />
<AsyncLogger name="org.mule.extensions.jms" level="INFO" />
<AsyncLogger name="org.mule.service.http.impl.service.HttpMessageLogger" level="INFO" />
<AsyncLogger name="org.mule.extension.salesforce" level="INFO" />
<AsyncLogger name="org.mule.extension.ftp" level="INFO" />
<AsyncLogger name="org.mule.extension.sftp" level="INFO" />
<AsyncLogger name="com.mulesoft.extension.ftps" level="INFO" />
<AsyncLogger name="org.mule.modules.sap" level="INFO" />
<AsyncLogger name="com.mulesoft.extension.mq" level="INFO" />
<AsyncLogger name="com.mulesoft.mq" level="INFO" />
<AsyncLogger name="org.mule.extension.db" level="INFO" />
<AsyncLogger name="httpclient.wire" level="DEBUG" />
<AsyncLogger name="org.mule.transport.email" level="DEBUG" />
</Loggers>
</Configuration>