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Custom logging
If the default logging behaviour is not sufficient, you might want to alter the logging configuration and provide custom log appenders. This guide will give you an overview on how to customize the log appenders for different components.
Job Agent
The RapidMiner Job Agent useslogbackas its logging framework. The following XML file describes the default configuration:
${LOG_PATH}/agent.log ${LOG_PATH}/agent.log.%d{yyyy-MM-dd} ${FILE_LOG_PATTERN} By default two appenders will be used: TheCONSOLEand theAGENTLOGFILE．TheCONSOLEappender is responsible for logging to shell, whereas theAGENTLOGFILEappender will create a rolling log file on disk.
Custom appender
To register a custom log appender, you need to configure the XML, save it as a file (logback.xml), preferably in thehome/configfolder of the Job Agent, and register the location in thehome/config/agent.propertiesfile, as indicated below:
logging.config = ${jobagent.baseDir}/home/config/logback.xmlThe documentation about different log appenders can be found in thelogback documentation．
Example: SMTP appender
Some appenders require third-party libraries. Before adding an appender check thedependency listand add the required libraries to thelibs/folder of the Job Agent. In this case the SMTP appender requires theJava邮件API 1。6.0and theJavaBeans Activation Framework 1.1library.
The SMTP appender will collect logging events and sends the content via email. By default, the appender is triggered by the logging precedenceERRORand above. The detailed documentation about this appender can be found in thelogback documentation．以下配置添加一个EMAILappender to the default logging configuration:
$SMTP_HOST $SMTP_PORT true $USERNAME $PASSWORD $MAIL_TO $MAILFROM Error: %logger{20} - %m %date %-5level %logger{35} - %message%n ${LOG_PATH}/agent.log ${LOG_PATH}/agent.log.%d{yyyy-MM-dd} ${FILE_LOG_PATTERN} Please make sure to replace the following properties before actually using this appender:
$SMTP_HOST: the hostname of your SMTP server, e.g.mail.your-organization.com$SMTP_PORT: the port of your SMTP server, e.g.465$USERNAME: the username of the account which is responsible for sending the mails$PASSWORD: the corresponding password$MAIL_TO: the mail address which should receive the log events$MAIL_FROM: the mail address of the sender
