cloudstack day japan 2015 - hypervisor selection in cloudstack 4.5
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1. CloudStack Day Tokyo 2015 Covering Apache CloudStack 4.5 Selecting the correct hypervisor for your cloud 2. #whoami Name: Tim Mackey Current roles: XenServer Community Manager and Evangelist; occasional coder Cool things Ive done Designed laser communication systems Early designer of retail self-checkout machines Embedded special relativity algorithms into industrial control system Find me Twitter: @XenServerArmy SlideShare: slideshare.net/TimMackey LinkedIn: www.linkedin.com/in/mackeytim 3. What are we trying to accomplish? Building a successful cloud 4. Service Offerings Clearly define what you want to offer What types of applications Who has access, and who owns them What type of access Define how templates need to be managed Operating system support Patching requirements Define expectations around compliance and availability Who owns backup and monitoring 5. Define Tenancy Requirements Department data local to department Where is the application data stored Data and service isolation VM migration and host HA Network services Encryption of PII/PCI Where do keys live when data location unknown Need encryption designed for the cloud Showback to stakeholders More than just usage, compliance and audits 6. Virtualization Infrastructure Hypervisor defined by service offerings Dont select hypervisor based on standards Multiple hypervisors are OK Bare metal can be a hypervisor To Pool resources or not Is there a real requirement for pooled resources Can the cloud management solution do better? Real cost of shared storage Primary storage defined by hypervisor Template storage defined by solution Typically low cost options like NFS 7. Leading hypervisor options 8. XenServer 6.5 Feature Source code model Open Source (GPLv2) Maximum VM Density 1000 CloudStack VM Density 500 CloudStack integration Direct XAPI calls Maximum native cluster size 16 Maximum pRAM 1 TB Largest supported VM 32 vCPU/256GB Windows Operating System All Windows supported by Microsoft Linux Operating Systems RHEL, CentOS, Debian, Ubuntu, SLES, OEL Advanced features supported ovs, Storage XenMotion, DMC, Pool HA 9. vSphere 5.5 (no vSphere 6 yet) Feature Source code model Proprietary Maximum VM Density 512 CloudStack VM Density 128 CloudStack integration vCenter Maximum native cluster size 32 Maximum pRAM 4 TB Largest VM 64 vCPU/1TB Windows Operating Systems DOS, All Windows Server/Client Linux Operating Systems Most Advanced features supported HA, DRS, vDS, Storage vMotion 10. KVM Feature Source code model Open Source (GPLv2) Maximum VM Density 10 times the number of pCores CloudStack VM Density 50 CloudStack integration CloudStack Agent (libvirt) Maximum native cluster size No native cluster support Maximum pRAM 2 TB Largest VM 160 vCPU/2TB Windows Operating Systems Windows XP and higher Linux Operating Systems Varies Advanced features supported None 11. Microsoft Hyper-V Feature Source code model Proprietary Maximum VM Density 1024 CloudStack VM Density 1024 CloudStack integration CloudStack Agent (C# calling WMI) Maximum native cluster Size 64 Maximum pRAM 4 TB Largest VM 64 vCPU/1TB Windows Operating Systems All Windows supported by Microsoft Linux Operating Systems RHEL, CentOS, Debian, Ubuntu, SLES, OEL Advanced features supported VHDX, Storage Motion (shared only) 12. Defining the network 13. Flat Network Basic Layer 3 Network Option XenServer vSphere KVM Hyper-V Security Groups Yes- bridge No Yes Yes IPv6 Yes No Yes No Multiple IPs per NIC Yes Yes Yes Yes Nicira NVP Yes No Yes No BigSwitch VNS Yes No Yes No 22.214.171.124 126.96.36.199 188.8.131.52 184.108.40.206 Public Network 220.127.116.11/16 Guest VM 1 Guest VM 2 Guest VM 3 Guest VM 4 DHCP, DNS CloudStack Virtual Router Security Group 1 Security Group 2 14. VLANs for Private Cloud Option XenServer vSphere KVM Hyper-V Max VLANs 800 254 1024 4094 IPv6 Yes No Yes No Multiple IPs per NIC Yes Yes Yes Yes Nicira NVP Yes No Yes No BigSwitch VNS Yes No Yes No MidoKura No No Yes No VPC Yes Yes Yes Yes NetScaler Yes Yes Yes Yes F5 BigIP Yes Yes Yes Yes Juniper SRX No Yes Yes Yes Juniper EX/QFX No Yes Yes No Cisco VNMC No Yes No No GloboDNS Yes No No No Brocade VDX Yes Yes Yes No 10.1.1.1 10.1.1.3 10.1.1.4 10.1.1.5 Public Network/Internet Guest Virtual Network 10.0.0.0/8 VLAN 100 DHCP, DNS NAT Load Balancing VPN Public IP 18.104.22.168 Gateway 10.1.1.1 Guest VM 1 Guest VM 2 Guest VM 3 Guest VM 4 CloudStack Virtual Router 15. Beyond the VLAN Software Defined Networking Option XenServer vSphere KVM Hyper-V OVS GRE tunnels Yes - ovs No No No Nicira STT tunnel Yes Yes Yes No MidoNet No No Yes No VXLAN No Yes Yes No NVGRE No No No No Nexus 1000v No Yes No No Juniper Contrail Yes No No No Palo Alto Yes Yes Yes No Nuage VSP Yes Yes No No 16. Virtual Private Cloud and nTier Applications Feature XenServer vSphere KVM Hyper-V PVLAN Yes - ovs Yes ovs Yes Hyper-V VR required IPv6 Yes No Yes No Distributed routing Yes - ovs No ovs No Web App DB Router DC1 DC2 DC3 DC4 DC5 DC6 VLAN 1 VLAN 2 VLAN 3 S2S VPN Private GW 17. Storage, storage and more storage Instances need a home . 18. Primary Storage Options Feature XenServer vSphere KVM Hyper-V Local storage Yes Yes Yes Yes NFS Yes Yes Yes No SMB No No No SMB3 Single path iSCSI Yes Yes Yes No Multipath iSCSI PreSetup No No No Direct array No VAAI No No Shared Mount No No Yes No SolidFire Plugin Yes Yes Yes No NetApp Plugin Yes Yes Yes No CloudBytes Elastistor Yes No No No Zone wide No Yes Yes No Ceph RBD No No Yes No Clustered LVM No No Yes No Cluster Host Host Primary Storage 19. Secondary Storage Options Option XenServer vSphere KVM Hyper-V NFS Yes Yes Yes No Swift(1) Yes Yes Yes No S3 compatible (2) Yes Yes Yes No SMB No No No Yes Template format VHD OVA QCOW2, VHD, VMDK, RAW, IMG VHD, VHDX Primary storage golden cache Yes No No No (1) Requires NFS staging area (2) Can be region wide, but must not have NFS secondary storage in zone Zone Secondary Storage Pod Cluster Host Host Primary Storage 20. The limits and features which matter Core virtualization capabilities 21. CloudStack Features Feature XenServer vSphere KVM Hyper-V Disk IO Statistics Yes No Yes Yes Memory Overcommit Yes (4x) Yes No No Dedicated resources Yes Not with HA/DRS Yes Yes Disk IO throttling No No Yes No Disk snapshot (running) Yes Yes No No Disk snapshot (pluggable) Partial Partial No No Disk snapshot (Stopped) Yes Yes Yes Yes Memory snapshot Yes Yes Yes No Zone wide primary storage No Yes Yes SMB 3.0 only Resize disk Offline Online Grow Online No High availability Host + CloudStack Native CloudStack CloudStack CPU sockets 6.2 and higher Yes Yes Yes Affinity groups Yes Yes Yes Yes GPU passthrough/vGPU 6.2 SP1 and higher No No No AutoScaling VM Instances Native, NetScaler NetScaler NetScaler NetScaler 22. Multiple Hypervisor Support Networking Ensure network labels match Topology is intersect of chosen hypervisors Hyper-V requires Hyper-V system VMs Storage Force system VMs to specific hypervisor type Zone wide primary storage limited Operations vSphere Datacenter can not span zones Hyper-V may not be mixed with other hypervisors in a zone HA wont migrate between hypervisors Capacity planning at the cluster/pod level more difficult 23. Picking the best one When to use which hypervisor 24. KVM Primary value proposition: Low cost with available vendor support and familiar administration model Broad feature set with active development Cloud use cases: Linux centric workloads Dev/test clouds Web hosting Tenant density which dictates SDN options Weaknesses: Requires use of an installed libvirt agent Limited native storage options No use of advanced native features 25. vSphere Primary value proposition: Broad application and operating system support with large eco-system of vendor partners Readily available pool of vSphere administration talent Many features are native implementations Direct feature integration via vCenter Cloud use cases: Private enterprise clouds Dev/test clouds Weaknesses: vSphere up-front license and ongoing support costs, many features require Enterprise Plus vCenter integration requires redundant designs Single data center per zone model 26. XenServer Primary value proposition: Low cost with available vendor support Broad feature set with active development Large install base Direct integration via XAPI toolstack Cloud use cases: Linux centric workloads Dev/test clouds and web hosting providers Desktop as a Service clouds Large VM density and secure tenant isolation Weaknesses: Minimal use of advanced native features 27. Tying it all Together 1. Define success criteria 2. Select a topology which works 3. Decide on storage options 4. Define supported configurations 5. Select preferred hypervisor(s) 6. Validate matrix 7. Build your Cloud 28. WORK BETTER. LIVE BETTER.