Understanding the OpenNebula Model for Cloud Provisioning

Welcome to OpenNebulaConf 2014!

Ruben S. Montero

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A Multi-tenant Infrastructure

Physical Resource● Tools to establish sharing policies of physical resources● Proper isolation of users● Control and limit usage

Virtual Resources● Self-provisioning● Accomodate different user provisioning models (cattle vs pet)

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Logical group of hypervisors, datastores and virtual networks

A Multi-tenant Infrastructure

Cluster A Cluster B

Placement Policies: Allocate a VM to a given cluster

Access Control: Allocate users to a given cluster

Resources can be assigned to more than one cluster to better balance resource allocation 4.12

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A cluster provides resources to a user group

A Multi-tenant Infrastructure

Cluster A Cluster B

User Group A User Group B

Quota:Limit group/user usage

Showback, users get an estimated associated resource usage cost based on CPU and MEMORY cost 4.12

Self-Provision: ● VMs ↔ Hypervisors● Images ↔ Datastores● Address↔Virtual Networks

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Virtual Data Center

A Multi-tenant Infrastructure

Resource Provider User Group A

VDC Admin: Autonomic management of VDC users

Simple Provision: Use a cloud-like interface

Federate: VDC can spread several Datacenters / Zones

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VDC admin can save VM changes for her VDC users

Bootstraping the Cloud

1. Disks

● Vanilla OS installations● Pre-built appliances● Context & user inputs

● Include HW presets● Hypervisor settings● Placement policies● Cost

3. VM Template

2. Network Interface Controllers

● Pre-defined connections● Set at deployment time● Re-use Network attributes

Datastore & Virtual Network determines running cluster

Security Groups with VNET semantics

4.12

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Interfacing the Cloud: Cattle vs Pets

● HA, Backup policies● Richer interfaces● Long-lasting life-cycles

● Easily disposed● Simple interfaces● Short life-cycles

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Interfacing the Cloud: Cattles

● Instantiate many times same installation● Use context● Limited set of operations● mainly GUI access - CloudView

Improve Clone VMs to templatesto support multiple disks

4.12

Clone before deploy (instantiate to persistent)

4.12

Cloud View

Taking care of those cattles...

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Interfacing the Cloud: Pets

● Instantiate many times same installation● Persistency + Backup (snapshots)● Rich set of operations● API + CLI + Sunstone access

Cold attach of disks and NIC 4.12

Migrate VMs across system datastores

4.12

Taking care of those pets..

Sunstone

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Danke!Thank You!