2. Contents
● What is OpenNebula?
● Design Principles & Vision
● The Anatomy of an IaaS Cloud
● Building an IaaS Cloud: A single node example
● Lessons Learned
3. What is OpenNebula?
Public Cloud Private
Cloud
Simple Web Interface A Cloud behind a firewall
Infrastructure Resources Security Concerns
Elastic & “infinite” Improve Operations
Hybrid Cloud / CloudBursting
Supplement Capacity of the
Private
Utility Computing for Real
4. What is OpenNebula?
Image Management
Monitoring & Scheduling
Networking
Multi-tenancy
Interfaces & APIs
VM VM VM VM VM VM VM VM
Hypervisor
Physical Hardware
.. Hypervisor
Physical Hardware
Host Host
5. Design Principles and Vision
● Flexible: One solution can not fit all data-centers
● Simple: just-what-you-need components & simple protocols
● Scalable: single instance & multi-tier architectures
● Open Source: Apache License v2.0
● Provide basic components, but easily hack by others
6. The Anatomy of an IaaS Cloud
Interfaces, Tools & API
● CLI & Sunstone (GUI)
● API
● Cloud (EC2,OCCI)
● Service Management & Catalogs
Network Storage
● VLAN ● VM disks (file & block)
● Firewalling ● Image Distribution
● Multiple Technologies ● Multiple Backends
Multi-tenancy
● AAA Services
● Scheduling
● Permissions & roles
Compute Hosts
● Grouped in logical clusters
● Multiple hypervisors
● Monitoring
7. Building an IaaS Cloud: A single node example
Image Datastore System Datastore
(DS_ID: 1) (DS_ID: 0)
"NAS" "NAS"
wlan0
Internet
vbr0
VM VM
KVM
My Laptop
8. Building an IaaS Cloud: Tools & Interfaces
Tools
● DevOps vs Users
● Command Line Interface
Command Line Interface
● GUI
○ Sunstone
○ Self-service
● Cloud API's
○ EC2 Query API
○ OCCI
9. Building an IaaS Cloud: Hosts
Host Management
● Monitoring
○ Simple - SSH probes
○ Ganglia HOST HOST HOST
● Cluster
○ Logical set of:
■ Storage
■ Network
■ Hosts
○ Deal with heterogeneity
10. Building an IaaS Cloud: Storage
Storage
● Datastore
○ Image store Image Datastore System Datastore
(DS_ID: 1) (DS_ID: 0)
○ Balance I/O
○ Policies
○ File, iSCSI, LVM, VMFS
"NAS" "NAS"
● Image distribution
○ System Datastore
○ Shared/Distributed FS
○ SSH
○ iSCSI
○ LVM
11. Building an IaaS Cloud: Network
Images
● Files vs Block devices
○ Performance Image Datastore System Datastore
(DS_ID: 1) (DS_ID: 0)
○ Management
● Types
○ Golden Images
"NAS" "NAS"
○ Persistent
○ Volatile
● Context
CD-ROM with
custom data
Disk images
12. Building an IaaS Cloud: Network
Networks
● Define a MAC-IP address
space
● Layer 2 Isolation (drivers)
○ 802.1Q (Tagging)
○ OpenvSwitch vbr0
○ ebtables VM VM VR
○ Flat
● Layer 3 simple firewalling
○ TCP/UDP ports
Internet
○ ICMP's
● Virtual Router
13. Building an IaaS Cloud: Virtualization
Virtualization
● Virtual Machine Templates
○ Capacity
○ Disks VM VM
○ NICs
Hypervisor
○ Other (VNC, OS,...)
● Support VM operations
○ Stop/Resume
○ Migration (live)
○ Attach/Detach
○ Shutdown/Reboot/Reset
● Hypervisor
○ Agnostic
○ Xen, KVM and VMware
18. History of the Project
Third party scalability
● Develop & innovate tests: 16000 VMs
● Support the community
● Collaborate Commercial Support
TP v3.2 3.4 3.8
v1.0 v1.2 v1.4 v2.0 v2.2 v3.0
2005 2008 2009 2010 2011 2012
dsa group doing
research…
4,000
downloads/month
European Funding
19. Lessons Learned
Do not hide the Complexity, Architect the Cloud!
● Let IT staff adapt/desgin/develop their cloud deployments
● Design to Automate
● Scale your deployments
Be Interoperable, Have a Rich set of API’s & Interfaces
● Be prepared for different uses cases (don’t look at the service)
● Be prepared to deal with different solutions (storage, virt., nets)
● Be prepared to interoperate at different levels
20. Join us at www.opennebula.org
#opennebula OpenNebula/one
@opennebula dev.opennebula.org
