CloudStack Architecture FutureSheng Liang, CTO Cloud Platforms, Citrix SystemsJuly 21, 2012
Users        SS        CP                            CloudVR                                  EC2                         ...
Future: CloudStack storage                                                                  CloudStackPrimary Storage     ...
• Apache Foundation project• Hadoop Core includes: ᵒ HDFS - Distributed file system derived from Google File System ᵒ Map/...
Now: management server clusters, zones, and regions                     Region 1                                       Reg...
Future: management server cluster per zone                     Region 1                                       Region 2    ...
• Implement rigorous state machines for all operations• Customizable workflow engine• Enhance plug-in framework ᵒ Storage ...
• Stateless, recreatable, and restartable• CloudStack manages auto-scaling of System VMs• System VMs may be dedicated (e.g...
S3 API                                  NFS, CIFS, HDFS,                                  3rd-Party Object             S3 ...
• Clean up access control code• API servers run as a separate service ᵒ Running in System VM
• Built on message bus• Treats management server DB as the desired state• Some downsides: ᵒ Prevents use of native virt mg...
Future model  Userh        CloudStack               Mgmt Server                              vCenter    ESXi Cluster      ...
• Register existing virt clusters• CloudStack must assume any of the underlying networks, storage,  hosts, and VMs can cha...
Manage existing server virt clusters                   CloudStack Region    AWS-style       AWS-style          AWS-style  ...
Work better. Live better.
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CloudStack Architecture Future

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CloudStack Architecture Future

  1. 1. CloudStack Architecture FutureSheng Liang, CTO Cloud Platforms, Citrix SystemsJuly 21, 2012
  2. 2. Users SS CP CloudVR EC2 Stack API Layer VM VM Access control System VM Framework Orchestration Plug-in Engine FrameworkEvent Framework Resource Management Plug-ins Message Bus (for storage, vSphere XenServer KVM SRX NetScaler Other networking, Resource Resource Resource Resource Resource Resources hypervisor, etc.)
  3. 3. Future: CloudStack storage CloudStackPrimary Storage Mgmt Server• Can be configured zone-wide• Supports true EBS implementations AWS-style AWS-style AWS-style Availability Availability Availability Zone Zone ZoneSecondary Storage• No longer needed zone-wide NFS server Object Storage• Region-wide object store for templates, ISOs and snapshots• Templates and ISOs cached in Primary Storage
  4. 4. • Apache Foundation project• Hadoop Core includes: ᵒ HDFS - Distributed file system derived from Google File System ᵒ Map/Reduce – Distributed compute engine• Written in Java• Runs on Linux, Mac OS/X, Windows, and Solaris• Optimized for commodity hardware
  5. 5. Now: management server clusters, zones, and regions Region 1 Region 2 Data Data Data Data Data Data Center Center Center Center Center Center Primary Standby Primary Standby Mgmt Mgmt Mgmt Mgmt Server Server Server DR Server Cluster DR Cluster Cluster Cluster Availability Availability Availability Availability Availability Availability Zone Zone Zone Zone Zone Zone Object Storage Object Storage
  6. 6. Future: management server cluster per zone Region 1 Region 2 Data Data Data Data Data Data Center Center Center Center Center Center Mgmt Mgmt Mgmt Mgmt Mgmt Mgmt Server Server Server Server Server Server Cluster Cluster Cluster Cluster Cluster Cluster Availability Availability Availability Availability Availability Availability Zone Zone Zone Zone Zone Zone Object Storage Object Storage
  7. 7. • Implement rigorous state machines for all operations• Customizable workflow engine• Enhance plug-in framework ᵒ Storage plug-in
  8. 8. • Stateless, recreatable, and restartable• CloudStack manages auto-scaling of System VMs• System VMs may be dedicated (e.g., virtual router) or shared (SSVM and CPVM)• Potentially expose System VM framework to 3rd-party VMs? ᵒ NetScaler VPX ᵒ User VM
  9. 9. S3 API NFS, CIFS, HDFS, 3rd-Party Object S3 API VM Store API, …S3 API VM Object Store… … … (e.g., NetApp, Hadoop, Cloudian) S3 API VMCloudStack Compute Nodes
  10. 10. • Clean up access control code• API servers run as a separate service ᵒ Running in System VM
  11. 11. • Built on message bus• Treats management server DB as the desired state• Some downsides: ᵒ Prevents use of native virt mgmt tools ᵒ Bugs could cause disastrous results (like stopping/destroying guest VMs)• An alternative model: CloudStack functions as a virt admin user, enabling super admin to use native virt mgmt tools
  12. 12. Future model Userh CloudStack Mgmt Server vCenter ESXi Cluster vCenter Client Admin XenServer Cluster XenCenter Hyper-V Systems Cluster Center
  13. 13. • Register existing virt clusters• CloudStack must assume any of the underlying networks, storage, hosts, and VMs can change state any time• Expose additional virt mgmt capabilities as cloud API
  14. 14. Manage existing server virt clusters CloudStack Region AWS-style AWS-style AWS-style Existing Existing Availability Availability Availability Server Virt Server Virt Zone Zone Zone Clusters Clusters Object Storage
  15. 15. Work better. Live better.

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