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Instance TypesUsing oVirt as a Private Cloud Solution

Tomáš Jelínek, tjelinek@redhat.comtjelinek at #ovirt (irc.oftc.net)

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Agenda

● Introducing oVirt

● Private Cloud (characteristics)

● Instance Types

● Live Demos

● Diving Deeper

● Future Work

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Introducing oVirt

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Private Cloud

● National Institute of Standards and Technology Special Publication 800-145

● Measured service● Broad network access● Resource pooling● Rapid elasticity● On-demand self-service

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Measured Service

● Service provider monitors the usage of services● Billing● Effective use of resources● Planning

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Measured Service - oVirt

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Broad Network Access

● Resources available from:● Wide range of devices● Wide range of locations

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Broad Network Access - oVirt

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Resource Pooling

● Different physical and virtual resources dynamically assigned and reassigned according to consumer demand

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Resource Pooling - oVirt

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Rapid Elasticity

● Automatically request additional resources

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Rapid Elasticity - oVirt

● Hot plug CPU (oVirt 3.5)

● Hot unplug CPU + plug/unplug mem (oVirt 3.6)

● Not out of the box – but there is REST

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On-demand self-service

● A consumer can provision resources without communicating with service provider

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Before 3.5 Options

● From scratch

● From template

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Portals

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Basic User Portal

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Power User Portal

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Web Admin

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From Scratch

● Uses defaults from “Blank” template

● This can not be changed

● Have to fill in everything different

● Simple to miss something

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Templates

● Create a VM and export a template

● Bundles everything

● Can not be combined with other image

● Cluster dependent (except Blank)

● User which can create VM can create “any” VM

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Instance Types

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Instance Type

● The hardware of the VM

● Can be combined with any SW

● Not dependent on cluster

● Global for all users

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Live Demo 1

● Look around the setup

● Look around the instance types

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Create a VM

● Create / Edit VM

● Attached / Detached to / from instance type

● Change instance type

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Live Demo 2

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Instance Creator Role

● A role with limited permissions

● Only applies for userportal

● Can create only instances of an Instance Type● Not allowed to use “Custom”● Not allowed to see/modify the values from instance type

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Live Demo 3

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Images?

● No images in 3.5

● Ongoing effort – will happen in 3.6

● Currently templates can be used

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Live Demo 4

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Advantages

● Better on-demand self-service● Better measured service● Bigger flexibility● Better mass edit of HW

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Diving Deeper – Different Types of Fields

Source

● Specific for VM (e.g. VM name)

● Taken from template (e.g. time zone)

● Taken from instance type (e.g. virtio-scsi)

● Taken from instance type if provided. If instance type not provided, taken from template (e.g. watchdog)

Detaches Instance Type

● Not detaching instance type (e.g. num of monitors)

● Detaching instance type (e.g. memory size)

Basic User (Instance Creator Role)

● Can change (e.g. boot sequence)

● Can Not change (e.g. memory size)

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Details in Feature Page

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Feature Work

● Images

● Run of the Image

● Quota Support

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THANK YOU !

http://www.ovirt.org/Features/Instance_Types

Tomáš Jelínek, tjelinek@redhat.comtjelinek at #ovirt (irc.oftc.net)