January 2018
Intermediate to advanced
398 pages
7h 54m
English
book
OpenStack Cloud Computing Cookbook - Fourth Edition
by Kevin Jackson, Cody Bunch, Egle Sigler, James Denton
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Suspending a host for maintenance
Often times a host needs to be taken offline to have memory replaced, an operating system upgraded, or other routine maintenance done. In order to ensure that running instances are not adversely affected, we use the openstack compute service set command.
Getting ready
In order to place a host into maintenance mode, you will need the following information:
- The
openstackcommand-line utility - The
novacommand-line utility - An
openrcfile with admin credentials - The name of the host
The host we will put into maintenance mode is as follows:
- Compute host:
compute-03
How to do it…
To remove a hypervisor for maintenance, carry out the following steps:
- First, we will list the available hosts:
source ~/openrc openstack compute service ...
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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.