运维培训-day1-03cern cloud architecture案例分析

1、CERN Cloud ArchitectureEasyStack Inc.欧洲核子研究中心OpenStack大型应用实践介绍目录CERN IntroductionWhy Build CERN CloudOpenStack at CERNEASYSTACKCERN Introduction CERN was founded 1954: 12 European States “Science for Peace”Today: 21 Member StatesMember States: Austria, Belgium, Bulgaria, the Czech Republic, Denmark,

2、 Finland, France, Germany, Greece, Hungary, Israel, Italy, the Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom Candidate for Accession: RomaniaAssociate Members in Pre-Stage to Membership: SerbiaApplicant States for Membership or Associate Membershi

3、p:Brazil, Cyprus (awaiting ratification), Pakistan, Russia, Slovenia, Turkey, Ukraine Observers to Council: India, Japan, Russia, Turkey, United States of America; European Commission and UNESCO 2,300 staff 1,000 other paid personnel 11,000 users Budget (2013) 1,000 MCHFWhy Build CERN CloudImprove o

4、perational efficiencyMachine reception and testingHardware interventions with long running programsMultiple operating system demandImprove resource efficiencyExploit idle resourcesHighly variable load such as interactive or build machinesImprove responsivenessSelf-service OpenStack at CERNEASYSTACKO

5、penStack at CERN by numbers 5500 Compute Nodes (140k cores) 5300 KVM 200 Hyper-V 2800 Images ( 44 TB in use) 2000 Volumes ( 800 TB allocated) 2200 Users 2500 Projects 17000 VMs runningNumber of VMs created (green) and VMs deleted (red) every 30 minutesOpenStack timeline at CERNOpenStack timeline at

6、CERNInfrastructure Overview at CERNOne region, two data centres, 33 CellsHA architecture only on Top CellChildren Cells control plane are usually VMs running in the shared infrastructureUsing nova-network with custom CERN driver / Neutron in one cell2 Hypervisor types (KVM, HyperV)Scientific Linux C

7、ERN 6; CERN Centos 7; Windows Server 2012 R22 Ceph instancesKeystone integrated with CERN account/lifecycle systemNova; Keystone; Glance; Cinder; Heat; Horizon, Ceilometer; Rally; Magnum; NeutronDeployment using OpenStack puppet modules and RDOArchitecture OverviewNova Deployment at CERNKeystone Deployment at CERNGlance Deployment at CERNCinder Deployment at CERNCeilometer Deployment at CERNFutureCapacity increase to 200k cores by Summer 2016Live Migrate 5000 thousands of VMsUpgrade 800 compute nodes from SLC6 to CC7Retire old s