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2.3. Configuring the Service Wrapper

Overview

You can configure the service wrapper in the ServiceName-wrapper.conf file, which is located under the InstallDir/etc/ directory.
For example, you might want to change any of the following settings:
  • default environment settings
  • properties passed to the JVM
  • Classpath
  • JMX settings
  • logging settings

Default environment settings

The following environment variables determine the broker environment:
JAVA_HOME
Location of the Java runtime installation.
Note
On Windows, you can set JAVA_HOME either as a system variable only in the registry or in ServiceName-wrapper.conf. You cannot set the variable as a regular environment variable in the Environment Variables list.
KARAF_HOME
Location of the Red Hat JBoss Fuse installation.
KARAF_BASE
Location of the configuration data and OSGi data for the broker instance.
Note
Runtime OSGi data is stored in sub-directories of this directory.
KARAF_DATA
Location of the logging and persistance data for the broker instance.
Example 2.1, “Default Environment Settings” describes the default environment variable values.

Example 2.1. Default Environment Settings

set.default.KARAF_HOME=InstallDir
set.default.KARAF_BASE=InstallDir
set.default.KARAF_DATA=InstallDir\data

JVM parameters

If you want to pass parameters to the JVM, you set the wrapper properties in the following format: 
wrapper.java.additional.<param_sequence_number>
The parameter sequence number must be unique for each parameter.
You can also set Java system properties in the following format: 
wrapper.java.additional.<n>=-DPropName=PropValue
Example 2.2, “Default Java System Properties” shows the default Java properties.

Example 2.2. Default Java System Properties

# JVM
# note that n is the parameter number starting from 1.
wrapper.java.additional.1=-Dkaraf.home="%KARAF_HOME%"
wrapper.java.additional.2=-Dkaraf.base="%KARAF_BASE%"
wrapper.java.additional.3=-Dkaraf.data="%KARAF_DATA%"
wrapper.java.additional.4=-Dcom.sun.managment.jmxremote
wrapper.java.additional.5=-Dkaraf.startLocalConsole=false
wrapper.java.additional.6=-Dkaraf.startRemoteShell=true
wrapper.java.additional.7=-Djava.endorsed.dirs="%JAVA_HOME%/jre/lib/endorsed;%JAVA_HOME%/lib/endorsed;%KARAF_HOME%/lib/endorsed"
wrapper.java.additional.8=-Djava.ext.dirs="%JAVA_HOME%/jre/lib/ext;%JAVA_HOME%/lib/ext;%KARAF_HOME%/lib/ext"

Additional classpath entries

You add classpath entries with the syntax format: 
 wrapper.java.classpath.<n>
The sequence number must be unique for each classpath entry.
Example 2.3, “Default Wrapper Classpath” shows the default classpath entries.

Example 2.3. Default Wrapper Classpath

wrapper.java.classpath.1=%KARAF_BASE%/lib/karaf-wrapper.jar
wrapper.java.classpath.2=%KARAF_HOME%/lib/karaf.jar
wrapper.java.classpath.3=%KARAF_HOME%/lib/karaf-jaas-boot.jar
wrapper.java.classpath.4=%KARAF_BASE%/lib/karaf-wrapper-main.jar

JMX configuration properties

The default service wrapper configuration does not enable JMX. However, it includes template properties that you can set to enable JMX. For example, you can change the settings to use a different port or secure the JMX connection.
Example 2.4, “Wrapper JMX Properties” shows the JMX template properties.

Example 2.4. Wrapper JMX Properties

#wrapper.java.additional.n=-Dcom.sun.management.jmxremote.port=1616
#wrapper.java.additional.n=-Dcom.sun.management.jmxremote.authenticate=false
#wrapper.java.additional.n=-Dcom.sun.management.jmxremote.ssl=false
  1. Locate the following line: # Uncomment to enable jmx
  2. Remove the prefix # from each of the properties.
  3. Replace the n in each property with a sequence number. Make sure that the number adheres to the sequence of all parameters and properties in the configuration file.

Logging configuration

You can set logging properties to control the level, frequency, and behavior of the wrapper logs.
Table 2.2, “Wrapper Logging Properties” lists the default logging properties.

Table 2.2. Wrapper Logging Properties

PropertyDescription
wrapper.console.format
Specifies how the logging information sent to the console is formated. The format consists of the following tokens:
  • L—log level
  • P—prefix
  • D—thread name
  • T—time
  • Z—time in milliseconds
  • U—approximate uptime in seconds (based on internal tick counter)
  • M—message
wrapper.console.loglevelSpecifies the logging level displayed on the console.
wrapper.logfileSpecifies the file used to store the log.
wrapper.logfile.formatSpecifies how the logging information sent to the log file is formated.
wrapper.console.loglevelSpecifies the logging level sent to the log file.
wrapper.console.maxsizeSpecifies the maximum size, in bytes, that the log file can grow to before the log is archived. The default value of 0 disables log rolling.
wrapper.console.maxfilesSpecifies the maximum number of archived log files which will be allowed before old files are deleted. The default value of 0 implies no limit.
wrapper.syslog.loglevelSpecifies the logging level for the sys/event log output.