This section describes the default Kura directory layout that is created upon installation. The default installation directory is as follows:
The kura sub-directory is a logical link on the actual Kura release directory:
kura -> /opt/eclipse/kura_3.0.0_raspberry-pi-2 kura_3.0.0_raspberry-pi-2
Kura File Structure
All of the Kura files are located within this parent directory using the structure shown in the following table:
|bin||Scripts that start Kura|
|console||Web console CSS file|
|data||Data of the Kura application|
|data/db||HSQL embedded database|
|data/paho-persistence||Message storage for paho (MQTT client) persistence|
|data/snapshots||XML snapshot files; up to 10 successive configurations including the original (see Snapshot Management)|
|kura||Configuration files for the Kura framework and logging|
|kura/plugins||All of the Kura specific jar files|
|kura/packages||Deployment package files that are not part of the standard ESF framework, but are installed at a later time (see Application Management )|
|log||Log file from the latest Kura installation|
|plugins||All of the libraries needed for Kura execution as jar files|
ESF regularly updates two log files in the /var/log directory:
/var/log/kura-console.log - stores the standard console output of the application. This log file contains the eventual errors that are thrown upon ESF startup.
/var/log/kura.log - stores all of the logging information from ESF bundles. The logger levels are defined in the log4j.properties configuration file as shown below:
The default logger level in this file is set to INFO. This level may be modified for the whole application or for a specific package as shown in the following example:
In this example, the logger level is set to DEBUG only for the net.admin bundle. Additional, more specific, properties may be defined as required for your particular logging needs. The logger levels are hierarchical, so that those in a deeper level of the hierarchy will apply; otherwise, the more general logger level will override them.
Once the logger levels are modified as needed and the log4j.properties configuration file is saved, Kura must be restarted in order for the changes to take affect.