CS-580K/480K Advanced Topics in Cloud Computing. OpenStack

Transcription

1 CS-580K/480K dvanced Topics in Cloud Computing OpenStack 1

2 Where we are 2 Virtualization Layer Operating System Operating System Operating System VM1 VM2 VM3 Virtualization Layer Operating System Operating System Operating System VM1 VM2 VM3 Virtualization Layer Operating System Operating System Operating System VM1 VM2 VM3 Network Virtualization Storage Virtualization Cloud operating system

3 What is Cloud Computing NIST Definition Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.

4 Let s Build a Cloud Operating System 4

5 Something about OpenStack Open Source cloud software Launched by NS and Rackspace in 2010 Massively scalable Managed by the OpenStack Foundation Fastest growing Open Source project to date! (8,000 attendance in OpenStack Summit) More info: 5

6 Infrastructure as a Service rovides the hardware and usually virtualized OS (VMs) to their customers 6

7 OpenStack Supports IaaS 7

8 OpenStack Written in ython Integrating a lot of existing techniques (e.g., virtualization, networking, storage, databases, webservices, message queues) 8

9 Core rojects 9

10 How a VM is Created within 10

11 How to Create a VM Virtual Resources Cloud pplications How many vcpus How much memory How much storage What is the Operating system (images)? Which network to use? How to access the VM (key-pair) 11

12 How to Create a VM Where to specify the requirement Through Dashboard Horizon Through Restful I nova boot --image ubuntu --flavor m1.small --nic net-name=net1 inst_name Cloud pplications Compute Nova 12

13 How to Create a VM Where to schedule the VM Nova-scheduler Cloud pplications Compute Nova 13

14 Zoom-In of Nova-Scheduler 14

15 Scheduling olicies Round-robin based scheduler Utilization based scheduling 15

16 How to Create a VM Image Service -- Glance Image Cloud pplications Compute Nova 16

17 How to Create a VM Network Neutron Image Cloud pplications Compute Nova Network 17

18 Network Componets Neutron Service ccepts I requests, handles DB L3 gent Manages virtual routers L2 gent Manages networking on compute node OVS flows / Linux bridges, VLN tagging, security groups DHC gent Manages dnsmasq instances 18

19 nova boot --image ubuntu --flavor m1.small --nic net-name=net1 inst_name Nova <-> Neutron Interactions Neutron 1. Create VM connected to network X DHC gent Nova Server L2 gent L2 gent Nova compute Nova compute 19

20 nova boot --image ubuntu --flavor m1.small --nic net-name=net1 inst_name Nova <-> Neutron Interactions Neutron 1. Create VM connected to network X DHC gent Nova Server L2 gent 2. Create ort (Nova-> Neutron) 3. Create tap (VM nic interface) L2 gent Nova compute Nova compute 20

21 nova boot --image ubuntu --flavor m1.small --nic net-name=net1 inst_name Nova <-> Neutron Interactions Neutron 1. Create VM connected to network X DHC gent Nova Server 4. Neutron creates port (llocates MC, I) L2 gent 2. Create ort (Nova-> Neutron) 3. Create tap (VM nic interface) L2 gent Nova compute Nova compute 21

22 nova boot --image ubuntu --flavor m1.small --nic net-name=net1 inst_name Nova <-> Neutron Interactions Neutron 1. Create VM connected to network X 5. Notify DHC gent DHC gent Nova Server 4. Neutron creates port (llocates MC, I) L2 gent 2. Create ort (Nova-> Neutron) 3. Create tap (VM nic interface) L2 gent Nova compute Nova compute 22

23 nova boot --image ubuntu --flavor m1.small --nic net-name=net1 inst_name Nova <-> Neutron Interactions Neutron 1. Create VM connected to network X 5. Notify DHC gent DHC gent Nova Server 4. Neutron creates port (llocates MC, I) L2 gent Nova compute 2. Create ort (Nova-> Neutron) 3. Create tap (VM nic interface) 6. Notify L2 gent (RC) Nova compute L2 gent 23

24 nova boot --image ubuntu --flavor m1.small --nic net-name=net1 inst_name Nova <-> Neutron Interactions Neutron 1. Create VM connected to network X 5. Notify DHC gent DHC gent Nova Server 4. Neutron creates port (llocates MC, I) L2 gent Nova compute 2. Create ort (Nova-> Neutron) 3. Create tap (VM nic interface) 6. Notify L2 gent (RC) 7. get_device_details (RC: L2 agent to Neutron service) 8. Send port_up notification (RC: L2 agent to Neutron service) Nova compute L2 gent 24

25 nova boot --image ubuntu --flavor m1.small --nic net-name=net1 inst_name Nova <-> Neutron Interactions 9. Send port_up notification (I: Neutron service to Nova) Neutron 1. Create VM connected to network X 5. Notify DHC gent DHC gent Nova Server 4. Neutron creates port (llocates MC, I) L2 gent Nova compute 2. Create ort (Nova-> Neutron) 3. Create tap (VM nic interface) 6. Notify L2 gent (RC) 7. get_device_details (RC: L2 agent to Neutron service) 8. Send port_up notification (RC: L2 agent to Neutron service) Nova compute L2 gent 25

26 Network lugins Network implementation of I is pluggable Each plugin implements I differently. For example, 'create_port' may be proxied to some 3rd party server Service lugins Firewall as a Service Filter traffic at the router level VN as a Service Extend your tenant networks off-site Load Balancer as a Service Distribute incoming messages to a pool of VMs 26

27 Tenant Connectivity & Isolation How is tenant networks connectivity and isolation achieved, exactly? Via VLNs or GRE / VXLN tunnels More information 27

28 How to Create a VM Block Storage Cinder Image Cloud pplications Compute Nova Cinder Network 28

29 How to Create a VM Virtualization Interface -- Libvirt Image Cloud pplications Compute Nova Cinder Network 29

30 How to Create a VM KEYSTONE Virtualization Interface -- Libvirt Image Cloud pplications Compute Nova Cinder Network 30

31 300-node deployment

32 Sources: Introduction to Neutron: Network as a Service 32

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