April 2017
Intermediate to advanced
470 pages
11h 12m
English
Content preview from Mastering OpenStack - Second Edition
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HA levels in OpenStack
It might be important to understand the context of HA deployments in OpenStack. This makes it imperative to distinguish the different levels of HA in order to consider the following in the cloud environment:
- L1: This includes physical hosts, network and storage devices, and hypervisors
- L2: This includes OpenStack services, including compute, network, and storage controllers, as well as databases and message queuing systems
- L3: This includes the virtual machines running on hosts that are managed by OpenStack services
- L4: This includes applications running in the virtual machines themselves
The main focus of supporting HA in OpenStack has been on L1 and L2, which are covered in this chapter. Additionally, L3 HA has ...
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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.
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