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@CloudExpo: Blog Post

Ubuntu Enterprise Cloud: Log Files

Useful to anyone debugging errors encountered while working with UEC

Cloud Expo 2010 East in New York

The following log files would be of interest for debugging errors encountered while working with UEC.


axis2c.log – This file logs messages specific to Axis2c web services.

cc.log – This file logs messages specific to Cluster controller.

cc-registration.log – This file logs the success or failure of Cluster Controller registration. For example,

SUCCESS: new cluster 'mycloud' on host 
'' successfully registered.

cloud-debug.log, cloud-error.log, cloud-output.log – These files log messages specific to Cloud Controller.

sc-registration.log – This file logs the success or failure of Storage Controller registration. For example,

SUCCESS: new SC for cluster 'mycloud' on 
host '' successfully registered. Adding SC to cluster mycloud

sc-stats.log – This file logs statistics specific to Storage Controller.

walrus-registration.log – This file logs the success or failure of Walrus Storage Controller registration. For example,

SUCCESS: new walrus on host '' 
successfully registered. Adding WALRUS host

walrus-stats.log – This file logs statistics specific to Walrus Storage Controller.



axis2c.log – This file logs messages specific to Axis2c web services.

nc.log – This file logs messages specific to Node controller.


The logging level of these files is controlled by the LOGLEVEL macro in eucalyptus.conf. This macro controls the level of logging output that appears in various eucalyptus log files.

The options are DEBUG, INFO, WARN, ERROR, and FATAL (in descending order of verbosity). The default is DEBUG (everything).

Read the original blog entry...

More Stories By Kiran Murari

Kiran Murari works at CSS Corp. Earlier, he was into the domain of Embedded Networking and has worked on developing software for ARM and MIPS based routers, porting Linux kernel and Linux applications to various hardware platforms like Intel IXP4xx, Xscale and OMAP3. As a part of developing software for routers, he was involved in developing the firewall and IDS/IPS modules. His current interests include Virtualization, Cloud Computing and Embedded devices.

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