CloudStack Architecture Future

CloudStack Architecture Future

• 1.
  CloudStack Architecture Future ShengLiang, CTO Cloud Platforms, Citrix Systems July 21, 2012
• 2.
  Users SS CP Cloud VR EC2 Stack API Layer VM VM Access control System VM Framework Orchestration Plug-in Engine Framework Event 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.
  Future: CloudStack storage CloudStack Primary Storage Mgmt Server • Can be configured zone-wide • Supports true EBS implementations AWS-style AWS-style AWS-style Availability Availability Availability Zone Zone Zone Secondary 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.
  • Apache Foundationproject • 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.
  Now: management serverclusters, 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.
  Future: management servercluster 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.
  • Implement rigorousstate machines for all operations • Customizable workflow engine • Enhance plug-in framework ᵒ Storage plug-in
• 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.
  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 VM CloudStack Compute Nodes
• 10.
  • Clean upaccess control code • API servers run as a separate service ᵒ Running in System VM
• 11.
  • Built onmessage 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.
  Future model Userh CloudStack Mgmt Server vCenter ESXi Cluster vCenter Client Admin XenServer Cluster XenCenter Hyper-V Systems Cluster Center
• 13.
  • Register existingvirt 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.
  Manage existing servervirt 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.
  Work better. Livebetter.