February 2009
Intermediate to advanced
1008 pages
25h 24m
English
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Chapter 19. Zones
IN THIS CHAPTER
Introduction to Zones
Getting started with Zones
Advanced Zones configuration
Advanced zoneadm features
Ongoing Zones administration
Limitations to Zones
Branded Zones
As described in Chapter 17, zones are the operating system-level virtualization capability provided by OpenSolaris. This chapter focuses on zones and explains how resource management features, covered in Chapter 18, are used in conjunction with them. The combination of zones and resource management is called containers.
Introduction to Zones
The OpenSolaris zones capability is used to create a virtualized environment for running software in a secure and isolated way. Within the zone, it appears to users and applications that they are running on a standalone system. Users and processes outside of the zone cannot be seen or affected, there are no name conflicts on files or ports, and the behavior of software within the zone is contained to that zone. Because there are no name conflicts across zones, each zone has a unique user-ID namespace and its own root user. Administration within the zone is delegated to that zone's root user, who can configure and manage the zone almost as he or she sees fit. The various limitations are discussed in this chapter.
Although each zone appears as a standalone operating system from inside the zone, in reality there is a single instance of an OpenSolaris kernel running on the hardware. This kernel is inherently aware of zones and actively manages the containment ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.