การใช งานและต ดต งระบบ OpenStack ซอฟต แวร สาหร บบร หารจ ดการ Cloud Computing เบ องต น

Transcription

1 การใช งานและต ดต งระบบ OpenStack ซอฟต แวร สาหร บบร หารจ ดการ Cloud Computing เบ องต น Kasidit Chanchio Thammasat University Vasinee Siripoonya Electronic Government Agency of Thailand Phithak Thaenkaew LSR, NECTEC

2 Outline Objectives Part I: OpenStack Overview How OpenStack components work Keystone Nova Glance Part II: Demo Use Cases

3 Objectives ศ กษาเทคโนโลย Cloud Computing เพ อใช เป นพ นฐานในการ ว จ ยและสร างความร ใหม ส งเสร มการสร างกล มผ ใช งานและพ ฒนาระบบ OpenStack หร อ OpenStack Community ในประเทศ สร างความร วมม อระหว างองค กรและผ สนใจ ส งเสร มการใช งานและพ ฒนาซอฟต แวร แบบ Open Source

4 Objectives to build our private cloud Create a Cloud Computing Platform to support research at Thammasat University and partner organizations Accumulate practical knowledge and experiences on Cloud deployment and operations Study OpenStack Cloud OS in order to integrate our advanced Fault Resilient and Cloud management mechanisms to it

5 Cloud Distributed Systems that provide Services to users on-demand Focus on Infrastructure As A Service Cloud Virtualized Compute Virtualized Storage Virtualized Network

6 Public and Private Cloud Public Cloud: Available over Internet Pay-per-use basis Resources are shared by users from anywhere Private Cloud: Available over organization s IT infrastructure Pay by organization Resources are shared by users in same organization

7 Cloud Layers Applications Cloud OS Virtualization/OS Hardware/Storage/Network

8 Which Cloud OS should I use? Compatibility with your hypervisor/os Cloudstack comes from Citrix OpenStack uses KVM by default. It has good support and documentation on Ubuntu vcloud is definitely for vmware Maintainability Provide means to fix the system when things go wrong Community Supports Etc.

9 Major OpenStack and CloudStack Supporters IT Vendors OpenStack CloudStack Alcatel-Lucent X AMD Broadcom Brocade X X Cisco Dell F5 HP IBM Intel X X Juniper X X NEC NetApp X X Red Hat Suse TrendMicro X X X X X X X X X X X Communications Service Providers OpenStack CloudStack Akamai X AT&T BT (British Telecom) Deutsche Telekom Go Daddy Internap KT (Korea Telecom) X X NTT X X Yahoo Source: DOMICITY LTD. X X X X X X

10 OpenStack is an open and scalable cloud computing platform for building private and public clouds. Invented by Rackspace and NASA. The OpenStack project is provided under the Apache 2.0 license.

11 Participating Companies

12 Main Components OpenStack Compute (Nova): Provision and manage large networks of virtual machines OpenStack Object Storage (Swift): Create petabytes of secure, reliable storage using standard hardware OpenStack Image Service (Glance): Catalog and manage massive libraries of server images

13 Main Components OpenStack Dashboard (Horizon) : a modular web-based user interface for all the OpenStack services. OpenStack Identity Service (Keystone) : authentication and authorization for all the OpenStack services.

14 OpenStack Releases Austin Oct 21, 2010 Nova Swift Glance Bexar Feb 3, 2011 Nova Swift Cactus Apr 15, 2011 Nova Swift Glance Nova Swift Glance Diablo Sep 22, 2011 Essex Apr 5, 2012 Nova Swift Glance Keystone Horizon Nova Swift Glance Keystone Horizon Quantum Cinder Folsom Sep 27, 2012 Grizzly Apr 4, 2013 Nova Swift Glance Keystone Horizon Quantum Cinder

15 OpenStack isn t everything Strategic Planning Consultants, Business Process Automation Operations Engineers, Technicians, IT professionals, Network Experts Systems Servers, Firewall, Load-balancer, Operating Systems OpenStack Management Tools, Storage, Virtualization Facilities Data Center, Network, Storage

16 Hardening OpenStack Environments Restrict network and data access to least privilege Enable security features of underlying software Configure security features of underlying OS Harden the Hypervisor Use PKI for SSL Implement database security

17 OpenStack Architecture

18 SushiCloud s System Architecture Cloud Controller: nova-compute nova-network nova-scheduler nova-api nova-volume keystone dashboard Compute Node: nova-compute Glance Server : glance-api glance-registry memcache

19 How OpenStack Components work Components in our focuses: Keystone Nova Glance Networking Model Not currently cover Swift

20 OpenStack Architecture

21 Keystone A central authentication and authorization User represents someone or something that can gain access through Keystone. Users come with credentials that can be checked like passwords or API keys. Tenant represents what is called the project in Nova. Users are bound to a tenant by assigning them a role on that tenant. Role represents a number of privileges or rights a user has or actions they are allowed to perform. To access a service, we have to know its endpoint. So there are endpoint templates in Keystone that provide information about all existing endpoints of all existing services.

22 Keystone To access some service, users provide their credentials to Keystone and receive a token. If the user, for example, wants to spawn a new VM instance in Nova, one can find an URL to Nova in the list of endpoints provided by Keystone and send an appropriate request. After that, Nova verifies the validity of the token in Keystone and should create an instance from some image by the provided image ID and plug it into some network. All the way this token travels between services so that they can ask Keystone or each other for additional information or some actions.

23 Keystone Control Flow User Keystone Nova Glance credentials token token + request for VM verify token token + request for image verify token image successful response

24 OpenStack Architecture

25 Nova Nova handles instances provisioning on compute resources. Nova-api initiates most activities Nova components communicate via queue and nova database Nova-scheduler decides where to launch instances Nova-compute launches instances Nova-compute periodically report host and network capabilities to Nova-scheduler

26 Nova Control Flow Request Nova-api Run instance Message Q Host provision Make decision: -Filter hosts - Weight hosts Novascheduler Novacompute Host provision Launch instance -Request a copy of an image from glance - VM instance uses image on local compute node host

27 Nova Control Flow Request Nova-api Run instance Message Q Host provision Make decision: -Filter hosts - Weight hosts Novascheduler Novacompute Host provision Launch instance Host/Network capabilities Update Capability information

28 OpenStack Architecture

29 Glance Glance manage all kinds of images to instantiate VM instances Glance-api takes image retrieval requests from nova-compute and pass them to glance-registry OpenStack create a new copy of the image on a host where the VM instance runs Glance-registry check image metadata from database Glance stores Image data in its image store (S3, HTTP, Local, Swift)

30 Glance Control Flow User Image retrieval Glance-api retrieve image Glanceregistry Check image s Metadata from Glance DB Image store Upload/delete Upload/delete image Update image s Metadata on Glance DB

31 How OpenStack Components work Components in our focuses: Keystone Nova Glance Networking Model Not currently cover Swift

32 OpenStack Network Model Flat Network: A network administrator specifies a subnet from which all the virtual machines pulls IP addresses from a pool of available fixed addresses. Flat DHCP Network: The server that runs nova-network is a gateway to the compute nodes running virtual machines. Instances receive their fixed IPs by doing a dhcpdiscover. Like Flat Mode, all instances are attached to a single bridge on the compute node. VLAN Network: Compute creates a VLAN and bridge for each project. The project gets a range of private IPs that are only accessible from inside the VLAN. In this mode, each project gets its own VLAN, Linux networking bridge, and subnet.

33 IP address Fixed IPs are IP addresses that are assigned to an instance on creation and stay the same until the instance is explicitly terminated. Floating IPs are addresses that can be dynamically associated with an instance. A floating IP address can be disassociated and associated with another instance at any time.

34 OpenStack Architecture

35 Flat network, all-in-one server installation for development setup all-in-one nova-network nova-scheduler nova-api nova-compute VM VM VM eth br100:

36 Flat network, multiple compute nodes with a single network adapter for smoke testing or a proof of concept controller nova-network nova-scheduler nova-api compute nova-compute VM VM VM compute nova-compute VM VM VM eth0 eth0 eth br100: br100 br100 Note: OpenStack uses NAT to assign floating IP to VMs

37 Flat network, multiple compute nodes with multiple network adapters for separate admin and data traffic eth1 eth1 eth1 controller compute compute nova-network nova-scheduler nova-api nova-compute VM VM VM nova-compute VM VM VM eth0 br100: eth0 br100 eth0 br100

38 Flat DHCP network, multiple interfaces, multiple servers for High Availability Networking controller nova-compute nova-network compute eth0 eth0 eth0 nova-compute nova-network public switch compute nova-compute nova-network VM VM VM VM VM VM VM VM VM eth1 br100: eth1 eth br100: br100: private switch

39 OpenStack Deployment (Essex) on SushiCloud Thammasat University eth0 controller nova-network nova-scheduler nova-api nova-compute nova-volume keystone dashboard VM VM VM eth1 eth2 br compute nova-compute VM VM VM eth0 eth1 br100 image glance-api glance-registry memcache eth

40 OpenStack Installation Instructions Scripted installation for proof-of-concept, learning, or development: DevStack ( Manual installation on Ubuntu, Debian, CentOS, Fedora or Red Hat Enterprise Linux 6 for deployment / production: OpenStack Manuals ( Other Installation ISO Distribution Installation: StackOps Distro - Community Edition / Enterprise Edition ( Puppet Deployment Tool (dodai-deploy): OpenStack Manuals (

41 Hardware Recommendations Recommended hardware configurations for a minimum production deployment for the cloud controller nodes Server Recommended Hardware Notes Cloud Controller node (runs network, volume, API, scheduler and image services) Processor: 64-bit x86 Memory: 12 GB RAM Disk space: 30 GB (SATA or SAS or SSD) Volume storage: two disks with 2 TB (SATA) for volumes attached to the compute nodes 32-bit processors will work for the cloud controller node. A quad core server with 12 GB RAM would be more than sufficient for a cloud controller node. Network: one 1 GB Network Interface Card (NIC) Two NICS are recommended but not required.

42 Hardware Recommendations Recommended hardware configurations for a minimum production deployment for the compute nodes Server Recommended Hardware Notes Compute nodes (runs virtual instances) Processor: 64-bit x86 Memory: 32 GB RAM Disk space: 30 GB (SATA) Network: two 1 GB NICs Note that you cannot run 64-bit VM instances on a 32-bit compute node. A 64- bit compute node can run either 32- or 64-bit VMs, however. With 2 GB RAM you can run one m1.small instance on a node or three m1.tiny instances without memory swapping, so 2 GB RAM would be a minimum for a test-environment compute node.

43 Compute and Image System Requirements Operating System: OpenStack currently has packages for the following distributions: CentOS, Debian, Fedora, RHEL, Debian, and Ubuntu. Database: For OpenStack Compute, you need access to either a PostgreSQL or MySQL database, or you can install it as part of the OpenStack Compute installation process. Network Time Protocol: You must install a time synchronization program such as NTP. For Compute, time synchronization keeps your cloud controller and compute nodes talking to the same time server to avoid problems scheduling VM launches on compute nodes.

44 Our Testbed Environment Cloud Controller node (runs network, volume, API, scheduler and compute) Compute node (runs virtual instances) Each node Processor: 64-bit 12-cores 2.1 GHz Opteron Memory: 48GB RAM Disk space: 600GB Volume storage: 300GB Network: four 1Gbps NICs

45 Our Testbed Environment Glance node (runs image services) Processor: 64-bit two Quad core Xeon Ghz Memory: 72GB RAM Disk space: 750GB Network: two 1Gbps NICs

46 Usage Scenario Once Upon a time, supposed you are a system admin of a small public cloud service provider company You want to create Cloud users and projects for a customer company Users access OpenStack to create and launch virtual machines by themselves

47 Using OpenStack Dashboard Add Users and Projects Create key-pair Launch Instance Configure Access Access Instance

48 Part II: Demo SuhiCloud Testbed