Rackspace OnMetal servers, docker and coreOS.

1. SRI
RAJAN
OnMetal and
Docker

2. About
Me
SRI
RAJAN
Principal Engineer
RACKSPACE | www.rackspace.com
ABOUT
ME • From India
• 9 years in Texas
• 4+ in UK
• 10+ years in IT
• 7+ years Racker
• Specialties; Linux, OpenStack, Automation
linkedin.com/in/rajansriram
@sriramrajan

3. WHAT IS OnMetal? WHAT CAN I
USE IT FOR?
WHY ARE CONTAINERS HOT
AGAIN?
WHAT IS DOCKER? SHOULD I
CARE?
AN INTRO TO DOCKER/CoreOS &
DEMO
The Plan

4. OnMetal

5. We all want the same thing
MULTI-TENANT CLOUD
ELASTIC
+
COLOCATION
SIMPLE TO SCALE

6. We all want the same thing
Single-tenant
bare-metal
instances
provisioned
through the
API
MULTI-TENANT CLOUD
ELASTIC
+
COLOCATION
SIMPLE TO SCALE
What is OnMetal
BARE METAL
SERVERS

7. I/O OPTIMIZED
MEMORY OPTIMIZED
COMPUTE OPTIMIZED
Cores RAM Disk
20 128
GB
2x1.6 TB
(Flash)
12 512
GB
32 GB
SATADOM
10 32 GB
32 GB
SATADOM
INSTANCE
TYPES

8. § Anything that needs close to
hardware performance
§ Databases, analytics, Caching
§ Predictable performance
§ Containers
KEY
WORKLOADS

9. § Built on top of OpenStack Ironic
§ Based on OCP(Open Compute
Platform)
OnMetal
FEATURES

10. § 10G networking
§ Disks are raw & unformatted
volumes
OnMetal
FEATURES

11. § Decontamination of boxes after
customers destroy an instance
§ Preparation of boxes when a
customer requests a new
instance
BEHIND
THE
SCENES

12. § Rackspace-developed
management agent
§ Agent never runs on customer instances
§ Exposes a REST API to Ironic
BEHIND
THE
SCENES

13. No. SO…
Does OnMetal use Hypervisor?

14. Is there full networking support?
OnMetal instances have PublicNet
and ServiceNet as of today. Full
Cloud Networks support will come
in future releases.
SO…

15. Is RackConnect supported?
Yes. SO…

16. What flavours does OnMetal
support?
Linux (CentOS, Fedora, Debian,
Ubuntu, CoreOS)
Windows (coming soon…)
SO…

17. Is OnMetal available in all
regions?
Currently it is available in IAD(US
Virginia) only. Dallas and London
are the next regions planned.
SO…

18. SO… ???

19. DEMO
TIME

20. CONTAINERS

21. Sounds familiar
BSD jails
Solaris
Zones
AIX
Wpar
OpenVZ
LXC
OpenVMS
Container

22. SO WHATS
NEW?

23. Image Credit: http://api.ning.com/files/YmroAXoonP-3QGHKTMQK9GCFAjf7GDtd8-wHs0i-
I5QaSZx093J*F6KZyiQ2X3DcmiYoiDciofTMYo6GjK0MXpR0zW-jvVmG/timing.jpg

24. TIME TO BLAME
GOOGLE !
“GOOGLE IS BEHIND ALL
THIS. WE ARE JUST
REIMPLEMENTING GOOGLE'S
INFRASTRUCTURE”
Alex Polvi (@polvi)

25. A CONTAINER
ENGINE

26. § Portability
§ Application centric (no wonder
Dev’s love it)
§ Versioning of application state
§ Reusability
DOCKER
PROMISES

27. § Started as an internal project for
DotCloud
§ Open sourced in March 2013
§ Originally in Python and used
LXC
DOCKER
FACTS

28. § In 2014, dropped LXC and
moved to libcontainer and also
to Go
§ In Oct 2014, Microsoft
announced integration with
Docker with Windows Server
DOCKER
FACTS

29. § LXC containers are lightweight
VMs
§ Docker aims to run a single app
§ No init and no daemons, cron, etc.
§ LXC supports unprivileged
containers
§ Docker does not
§ The origins are similar but they
are increasingly growing apart
DOCKER
Vs
LXC

30. DOCKER
LAYERS

31. § Designed to run one process
§ Let’s reflect on this
§ Not quite true
DOCKER
SINGLE
PROCESS

32. § Persistent data should be
stored elsewhere
§ Database
§ Bind mounts to host
§ Moves the problem of state
outside the container
DOCKER:
WHERE IS
THE
DATA?

33. § Hub.docker.com
§ Push/Pull images
§ Git again?
DOCKER:
REGISTRY

34. Docker – Ecosystem
Image Credit: http://blog.docker.com/wp-content/uploads/2013/10/ecosystem2.jpg

35. § Loads of potential to be
disruptive
§ Where can it improve?
§ Management utilities
§ Networking
§ Security
DOCKER:
IS IT
READY?

36. § Best fit
§ Microservices
§ Stateless applications
§ Speeding development process
(CI etc)
§ “PaaSish” systems
DOCKER:
IS IT
READY?

37. DEMO
TIME

38. § An innovating take on operating
system.
§ Forked from ChromeOS. (Blame
Google again.)
§ Minimalistic & Simple.
§ No package management.
§ Intimate with Docker.
§ Maximises reliability.
§ Patches are automatically applied.
CORE
OS

39. CLUSTER
MANAGEMENT
CORE OS
CORE OS
CORE OS
ONMETAL
ONMETAL
ONMETAL
(FLEET)
SOME
HELPERS
ETCD
CLOUD LOAD BALANCER
DOCKER
DOCKER
DOCKER
DOCKER
DOCKER
DOCKER
DOCKER
DOCKER

40. github.com/srirajan/
onmetal-docker/
bt.ly/rs-onmetal-docker

41. THANK YOU www.rackspace.co.uk/devops