european organization for nuclear research virtualization review and discussion omer khalid 17 th...
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European Organization for Nuclear Research
Virtualization Review and Discussion
Omer Khalid
17th June 2010
European Organization for Nuclear Research
Outline
Requirements Grid use case Virtualization basics Technology overview Constraints and Refinement Brainstorming and discussion
European Organization for Nuclear Research
Requirements
Core
1. Support for Linux and Windows
2. Live snapshots of VM
3. Automated Provisioning from a template
4. Public IP Networking
Optional (?)
1. Live migration of VM and Storage file
2. Sys Admin portal to manage cluster
3. User access portal
European Organization for Nuclear Research
Grid Deployment Use case
• Linux cluster of 20 machines
• VM requirement for Linux only
• Web-portal based VM creation/shutdown
• IP Networking via additional interfaces per server
• Workflow:
• User logs on to web portal with NICE credentials
• Select memory, disk and OS type and deploy/terminate
• Using Vgrid/Xen software
European Organization for Nuclear Research
Snapshot 1
European Organization for Nuclear Research
Snapshot 2
European Organization for Nuclear Research
Virtualization Overview
• To virtualize an OS:• Kernel calls has to be interrupted and redirected to virtual processor,
memory, I/O access
• Different techniques:• Para-virtualization: Patching the kernel to replace those calls
• Works for open-source platforms such as Linux, very fast• Xen open source, kvm
• Bit Translation: patching the binary calls on the fly• Works for legacy and closed source OS like Windows, slow• VMWare based technologies
• Emulation: emulate the underlying H/W and presents a virtual H/W• KVM/Vbox uses this for Windows, slower
• Hardware Virtual Machine: interrupt handling at processor level for any OS type (Intel-VT, AMD Pacifica)
• Citrix Xen, VMWare, Vbox, Kvm
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How it stacks up?
European Organization for Nuclear Research
Features List
Cluster Management1. Live Migration
2. Storage Migration
3. High Availability
4. Fault Tolerance
5. Network Shield zones
6. Distributed Scheduling
7. Memory Optimization
8. Hot Power Management
9. Recovery and Conversion Tools
Cloud Management1. Federation of clusters
2. Automatic Load Sharing
3. Standard API for Automation
4. Costing per Hour Usage
5. Elastic Capacity
6. User Access Portals
7. Accounting/Chargeback
European Organization for Nuclear Research
Candidates
• VMWare
• ESXi Server, vSphere (advance, enterprise)
• Citrix Xen
• XenServer 5.6, LabManager
• Microsoft
• Server 2008 Hyper-V, Citrix Essentials
• Eucalyptus
• EOS, EEC
• Hypervisor only• Virtual Box, KVM
European Organization for Nuclear Research
VMWare Products
• Hypervisor: ESXi or ESX
• Cluster: vSphere Platform• Vmotion + Storage Vmotion
• User access: vCenter LabManager
• Self-service portal for users• Web based to create and deploy virtual machines
• Roles and Rights for access control
• LDAP/Active Directory integration
European Organization for Nuclear Research
VMWare
European Organization for Nuclear Research
Citrix
• Hypervisor: XenServer or Hyper-V
• XenServer: Free, Advance, Enterprise editions• Free version provides live migration. Live memory snapshots only
in enterprise
• Cluster: Xen Center + Essentials
• User Access: Citrix Lab Manager• Similar to Vmware
• User driven
• Cost advantage
European Organization for Nuclear Research
Citrix
European Organization for Nuclear Research
Microsoft
• Hypervisor: HyperV - Windows Server 2008 R2• Support Xen patched Linux images• Up to 31 GB memory support vs VMWare’s 256 GB• Intel or AMD processor must be virtualization enabled• Standalone or Server editions• Could be mixed with Citrix
• Cluster: System Center Virtual Machine Manager• For administrator
• Also Citrix essentials
• User Access: not clear
• CERN IT deployed CVI
European Organization for Nuclear Research
Eucalyptus
• Hypervisor: ESXi, XenServer, KVM
• Clustering and User access:
• Eucalyptus Enterprise
• Features:
• Mixed hypervisor management
• Storage area network support
• User/Group Management
• Accounting/Quota Managment
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EE Users
European Organization for Nuclear Research
EE Accounting
European Organization for Nuclear Research
Feature Comparison
European Organization for Nuclear Research
Citrix Comparison
European Organization for Nuclear Research
Possible Cost Combinations
1. XenServer Advance/Enterprise + LabManager
• Cost lower then VMWare, features equivalent, separate technical support
2. Xen/Vsphere + Eucalyptus EE
3. Vsphere Standard/Enterprise + Vcenter LabManager
• Expensive, rich in feature, technical support included
4. Hyper-V Enterprise, Citrix Essentials + LabManager
• Using CERN HyperV license, cost same as Citrix, lower features
European Organization for Nuclear Research
Conclusion
• Vmware has the best features especially performance for Windows but higher costs
• Citrix only or in combination with Eucalyptus EE looks promising
• In-line with Open-source software spirit
• Microsoft solution only if we re-use CERN IT license
• Setting up a test bed and to test drive trial versions
Open Discussion - Brainstorm
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