Just enough operating system
- Just enough operating system
JeOS is the abbreviation (pronounced "juice") for the concept of Just Enough Operating System as it applies to a software appliance.
JeOS is not a generic, one-size-fits-all operating system. Rather, it refers to a customized operating system that precisely fits the needs of a particular application. The application's OS requirements can be determined manually, or with an analytical tool, such as rPath's [http://www.rpath.com rBuilder] .
Therefore, JeOS includes only the pieces of an operating system (often Linux) required to support a particular application and any other third-party components contained in the appliance. This makes the appliance smaller, and possibly more secure than an application running under a full general purpose OS.
See also
* Windows Embedded
* Ubuntu JeOS
External links
* [http://www.bea.com/framework.jsp?CNT=pr01756.htm&FP=/content/news_events/press_releases/2006 BEA's Liquid VM] is an example of JeOS. It is specifically engineered and optimized to support only the BEA Java server environment.
* [http://www.komputernerds.com/?q=node/12 KomputerNerds] release their own JeOS Appliance built on Debian4. This VMWare image weighs in as a 178M tarball.
* [http://www.novell.com/linux2/appliance/ SUSE Linux Enterprise (JeOS edition) from Novell.]
* [http://www.opensuse.org/LimeJeos Lime Jeos] is JeOS based on openSUSE.
* [http://www.livetime.com/webservicedesk/solutions/Virtualization.html LiveTime's JeOS] is an example of a Java based JeOS based on Linux and less than 300MB in size, supporting JDK 6.0, Apache 2.2 and Tomcat 6.0.
* [http://www.rpath.com rPath's rBuilder] quickly and easily transforms applications into virtual appliances using JeOS. Download appliances from [http://www.rpath.com/rbuilder/ rBuilder Online]
* [http://www.packetgeneral.com/ Security-GENERAL] from Packet GENERAL Networks is an example of secure and PCI-compliant JeOS for many enterprise applications.
* [http://www.redhat.com/solutions/aos/ Red Hat Appliance Operating System] allows ISVs to distribute their applications pre-packaged as complete solutions, simplifying deployment, management and maintenance for their end users.
* [http://virtualappliances.net/ Virtual Appliances] has several JeOS appliances with different targets:
*# LAMP Virtual Appliance (Linux, Apache, MySQL, Perl/PHP/Python) = 157MB
*# LAPP Virtual Appliance (Linux, Apache, Postgresql, Perl/PHP/Python) = 130MB
*# Apache Tomcat Virtual Appliance = 200MB
*# Cacti Virtual Appliance = 158MB
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