PA200 - Cloud Computing
Lecture 7: Introduction to OpenStack - history, design, and development
by Ilya Etingof, Red Hat
Warm-up
Let's rehearse on the previous lectures...
Q: Cloud delivery models
1. MaaS
2. SaaS
3. CaaS
4. PaaS
5. IaaS
Q: CSP's operational model?
1. Implement IaaS
2. Implement PaaS, consume IaaS
3. Implement SaaS & PaaS & IaaS
4. Implement IaaS, consume PaaS
5. Implement SaaS, consume PaaS
6. Implement SaaS & PaaS, consume IaaS
Q: Cloud abstraction levels?
1. Abstracts away the OS
2. Abstracts away application runtime
3. Abstracts away language runtime
4. Abstracts away the hardware
5. Abstracts away CPU
Q: Scaling by service model?
1. Operating system
2. Containerized application
3. Application instance
4. Function
Q: Cloud service model traits?
1. Best possible program isolation
2. Best possible security
3. Can run any OS on any architecture
4. Highest possible performance
5. Fastest spin-up
6. Majority of CSPs offer IaaS
Q: Cloud model by "stickiness"?
• FaaS
• IaaS
• PaaS
• SaaS
• Serverless
Q: IaaS/PaaS/SaaS?
• Amazon EC2
• Google App Engine
• Google Cloud Functions
• Office365
• slack.com
• AWS Elastic Beanstalk
• RedHat Openshift Online
• IBM Bluemix
• Google Kubernetes Engine
In this lecture
• OpenStack demo (instance & infrastructure deploy)
• OpenStack key components
• Instance lifecycle
• Service structure
• OpenStack development model
• Competitors of OpenStack
Demo: request & launch a VM
• Choose VM configuration
• Choose OS to install on the VM
• Create the VM, boot the OS
• Log into VM and use it somehow
• Tear down the VM
Demo: Choose VM configuration
$ openstack flavor list
+----+-----------+-----------+------+-----------+------+-------+-------------+
| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor |
+----+-----------+-----------+------+-----------+------+-------+-------------+
| 1 | m1.tiny | 512 | 0 | 0 | | 1 | 1.0 |
| 2 | m1.small | 2048 | 10 | 20 | | 1 | 1.0 |
| 3 | m1.medium | 4096 | 10 | 40 | | 2 | 1.0 |
| 4 | m1.large | 8192 | 10 | 80 | | 4 | 1.0 |
| 5 | m1.xlarge | 16384 | 10 | 160 | | 8 | 1.0 |
+----+-----------+-----------+------+-----------+------+-------+-------------+
Demo: Choose OS image
$ openstack image list
+--------------------------------------+--------------+--------+
| ID | Name | Status |
+--------------------------------------+--------------+--------+
| afa49adf-2831-4a00-9c57-afe1624d5557 | CentOS-7 | active |
| 842c207f-6964-4ed7-a41a-06ec66a7c954 | Ubuntu-16 | active |
| 30a2a55a-2045-4ed8-a605-2d1c1143edd3 | Ubuntu-18 | active |
| 713f2fbc-05c5-491b-9e02-e000861e7b30 | Fedora-31 | active |
| 5cb9c233-5867-4e47-80a1-9d774f800444 | Debian-7 | active |
| f84868a5-5261-404a-9c54-ec317ea16b94 | CentOS-8 | active |
| b105ad3b-7df8-4318-9c3d-4e4fa4cc4563 | Debian-8 | active |
| b67b74bc-c3a8-4087-9c28-de02161fdedd | CoreOS | active |
+--------------------------------------+--------------+--------+
Demo: Create VM & boot OS
$ openstack server create --flavor m1.small --key-name my_key \
--network my_network --image CentOS-7 my_instance
+------------------------+--------------------------------------+
| Property | Value |
+------------------------+--------------------------------------+
...
| id | 0e4011a4-3128-4674-ab16-dd1b7ecc126e |
| status | BUILD |
+------------------------+--------------------------------------+
Demo: List running VMs
$ openstack server list
+---------+--------------+--------+-----------------------------------------------+
| ID | Name | Status | Networks | Image | Flavor |
+---------+--------------+--------+-------------------------+----------+----------+
| 76b3... | my_instance | ACTIVE | my_network=192.168.1.23 | CentOS-7 | m1.small |
+---------+--------------+--------+-------------------------+----------+----------+
Demo: Log into VM
$ ssh centos@192.168.1.23
my_instance $ ls -a
.ssh/
my_instance $ pwd
/home/centos
my_instance $
Demo: Tear down VM
$ openstack server delete my_instance
Deploy the infrastructure
• Express desired setup in HEAT template
• Evaluate HEAT template with OpenStack
Demo: Write HEAT template (1/2)
heat_template_version: 2014-10-16
description: Deploy a compute instance with an attached volume
resources:
my_instance:
type: OS::Nova::Server
properties:
key_name: my_key
image: CentOS-7
flavor: m1.small
networks:
- network: my_network
...
Demo: Write HEAT template (2/2)
...
my_attachment:
type: OS::Cinder::VolumeAttachment
properties:
instance_uuid: { get_resource: my_instance }
volume_id: { get_resource: my_volume }
mountpoint: /dev/vdb
my_volume:
type: OS::Cinder::Volume
properties:
size: 10
Demo: Create a stack
$ openstack stack create -t my-template.yaml my-stack
+---------------------+---------------------------------------------------+
| Field | Value |
+---------------------+---------------------------------------------------+
| id | f81ec642-96b6-4540-b323-d5184327ae34 |
| stack_name | my-stack |
| description | Deploy a compute instance with an attached volume |
| creation_time | 2019-04-08T16:12:36Z |
| updated_time | None |
| stack_status | CREATE_IN_PROGRESS |
| stack_status_reason | Stack CREATE started |
+---------------------+---------------------------------------------------+
Demo: Inspect stack (1/4)
$ openstack stack list
+---------+-------------+-----------------+----------------------+--------------+
| ID | Stack Name | Stack Status | Creation Time | Updated Time |
+---------+-------------+-----------------+----------------------+--------------+
| f81e... | my-stack | CREATE_COMPLETE | 2019-04-08T16:12:36Z | None |
+---------+-------------+-----------------+----------------------+--------------+
Demo: Inspect stack (2/4)
$ openstack stack event list my-stack
2019-04-08 16:12:38Z [my-stack]: CREATE_IN_PROGRESS Stack CREATE started
2019-04-08 16:12:38Z [my-stack.my_instance]: CREATE_IN_PROGRESS state changed
2019-04-08 16:12:39Z [my-stack.my_volume]: CREATE_IN_PROGRESS state changed
2019-04-08 16:12:41Z [my-stack.my_volume]: CREATE_COMPLETE state changed
2019-04-08 16:13:00Z [my-stack.my_instance]: CREATE_COMPLETE state changed
2019-04-08 16:13:00Z [my-stack.my_attachment]: CREATE_IN_PROGRESS state changed
2019-04-08 16:13:04Z [my-stack.my_attachment]: CREATE_COMPLETE state changed
2019-04-08 16:13:04Z [my-stack]: CREATE_COMPLETE Stack CREATE completed successfully
Demo: Inspect stack (3/4)
$ openstack stack resource list my-stack
+---------------+---------+--------------------------+----------+----------------------+
| resource_name | ID | resource_type | status | updated_time |
+---------------+---------+--------------------------+----------+----------------------+
| my_volume | 2fc5... | OS::Cinder::Volume | COMPLETE | 2019-04-08T16:12:38Z |
| my_attachment | 2fc5... | OS::Cinder::VolumeAttach | COMPLETE | 2019-04-08T16:12:38Z |
| my_instance | 8263... | OS::Nova::Server | COMPLETE | 2019-04-08T16:12:38Z |
+---------------+---------+--------------------------+----------+----------------------+
Demo: Inspect stack (4/4)
$ openstack server list
+---------+--------------+--------+-----------------------------------------------+
| ID | Name | Status | Networks | Image | Flavor |
+---------+--------------+--------+-------------------------+----------+----------+
| 8263... | my_instance | ACTIVE | my_network=192.168.1.23 | CentOS-7 | m1.small |
+---------+--------------+--------+-------------------------+----------+----------+
Demo: Delete stack
$ openstack stack delete my-stack
Are you sure you want to delete this stack(s) [y/N]? y
$ openstack stack list
$ openstack server list
$
OpenStack building blocks
• Projects provide resources
• Resources are organized into stacks
• Stacks: HEAT templates + environment
OpenStack design
• A collection of loosely coupled services
• Interacting over REST APIs
• Using well-defined protocols
• Each service is a project backed by a team
OpenStack key services
• Compute service - Nova
• Network service - Neutron
• Image service - Glance
• Object Storage service - Swift
• Identity service - Keystone
Core OpenStack services
Instance deployment workflow (1/3)
• Heat engine executes a template
• Heat asks Nova to schedule an instance
• Nova asks Glance for a boot image (pre-created)
• Glance asks Swift for image contents
• Heat asks Cinder for volume
• Nova asks Neutron for network (pre-created)
Instance deployment workflow (1/3)
Instance deployment workflow (3/3)
OpenStack service structure (1/2)
• Message queue
• Persistent database
• REST API service
• Service engine
• Remote agent
OpenStack service structure (2/2)
OpenStack services (1/2)
• Orchestration - Heat
• Baremetal provisioning - Ironic
• Non/relational database service - Trove
• Dashboard - Horison
• Block Storage - Cinder
• Telemetry - Ceilometer
OpenStack services (2/2)
• Elastic Map Reduce - Sahara
• Messaging Service - Zaqar
• Shared Filesystems - Manila
• DNS Service - Designate
• Key Management - Barbican
• Containers - Magnum
• Application Catalog - Murano
• Governance - Congress
OpenStack history
• Rackspace and NASA teamed up to rewrite infrastructure code
• First design Summit in 2010
• First release "Austin" in 2010 (Nova + Compute)
• OpenStack Foundation in 2012
OpenStack releases (1/2)
• Victoria - 2020-10-14
• Ussuri - 2020-05-13
• Train - 2019-10-16
• Stein - 2019-04-10
• Rocky - 2018-08-30
• Queens - 2018-02-28
• Pike - 2017-08-30
• Ocata - 2017-02-22
• Newton - 2016-10-06
• Mitaka - 2016-04-07
OpenStack releases (2/2)
• Liberty - 2015-10-15
• Kilo - 2015-04-30
• Juno - 2014-10-16
• Icehouse - 2014-04-17
• Havana - 2013-10-17
• Grizzly - 2013-04-04
• Folsom - 2012-09-27
• Essex - 2012-04-05
• Diablo - 2011-09-22
• Cactus - 2011-04-15
• Bexar - 2011-02-03
• Austin - 2010-10-21
OpenStack operators (1/3)
Superuser award finalists:
• China Mobile
• AT&T
• CERN
• Comcast
• NTT
• Workday
• DreamHost
• VEXXHOST
OpenStack operators (2/3)
• T-Mobile
• Volkswagen AG
• Bloomberg
• Verizon
• Walmart
• China Mobile
• ... and thousands of others
OpenStack operators (3/3)
One of the large deployments by PayPal
• Number of VMs: 82,000
• Number of CPU cores: 400,000
• Number of bare metal: ~5000 (?)
OpenStack development (1/3)
OpenStack development (2/3)
OpenStack development (3/3)
OpenStack challenges
• Installation requires skills
• Documentation can be lacking/outdated
• Upgrades require skills and are risky
• Long-term support is lacking upstream
OpenStack governance
The pillars:
• Open source
• Open community
• Open design
• Open development
Open source
• Functional out-of-the-box
• No vendor-specifics built-in
• Apache 2.0 License
Open community
• Public meetings on Freenode (IRC)
• Mailing lists, bugs on http://storyboard.openstack.org
• Elected Project Team Lead
• Elected Technical Committee
Open design
• OpenStack Summit (operators)
• Project Team Gatherings (developers)
• OpenStack Forum (operators and developers)
Open development
• Git and Gerrit - https://review.openstack.org/
• Blueprints - https://specs.openstack.org/
• Zuul as CI - https://zuul-ci.org/
• DevStack
• Project Team Lead
• Core Reviewers
Future of OpenStack (1/3)
Future of OpenStack (2/3)
Future of OpenStack (3/3)
• Integration with PaaS (containers)
• Software Defined Networking / Network Function Virtualization
• Bare metal
• Edge deployments (IoT, CDN)
Recap: OpenStack is... (1/3)
• Established IaaS implementation
• Can provide virtual infrastructure
• Driven by HEAT or REST API automation (e.g. Ansible)
• A large and fluid collection of projects
• Projects are loosely unified
Recap: OpenStack is... (2/3)
Projects are frequently composed from:
• REST API
• Database
• Business logic engine
• Message bus
Recap: OpenStack is... (3/3)
• Free, open, community driven IaaS
• Fully open and democratic
• Everyone can use and contribute to OpenStack
• OpenStack is being in transition
Questions?
https://www.openstack.org/