Unlocked 2014 onmetal and docker

SRI RAJAN

OnMetal and Docker

About  Me  

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

SRI RAJAN Principal Engineer

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

OnMetal

We all want the same thing

MULTI-TENANT CLOUD

ELASTIC

+ COLOCATION

SIMPLE TO SCALE

Single-tenant bare-metal instances provisioned through the API

We all want the same thing

MULTI-TENANT CLOUD

ELASTIC

+ COLOCATION

SIMPLE TO SCALE

What is OnMetal

BARE METAL SERVERS

MEMORY OPTIMIZED

COMPUTE OPTIMIZED

I/O 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

§  Anything that needs close to hardware performance §  Databases, analytics, Caching

§  Predictable performance

§  Containers

KEY WORKLOADS

§  Built on top of OpenStack Ironic

§  Based on OCP(Open Compute Platform)

OnMetal FEATURES

§  10G networking

§  Disks are raw & unformatted volumes

OnMetal FEATURES

§  Decontamination of boxes after customers destroy an instance

§  Preparation of boxes when a customer requests a new instance

BEHIND THE SCENES

§  Rackspace-developed management agent §  Agent never runs on customer instances

§  Exposes a REST API to Ironic

BEHIND THE SCENES

Does OnMetal use Hypervisor? No.

SO…

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

SO…

Is RackConnect supported? Yes.

SO…

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

SO…

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

SO…

??? SO…

DEMO TIME

CONTAINERS

Sounds familiar

BSD jails Solaris Zones

AIX Wpar

OpenVZ

LXC

OpenVMS Container

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TIME TO BLAME GOOGLE !

“GOOGLE IS BEHIND ALL THIS. WE ARE JUST

REIMPLEMENTING GOOGLE'S INFRASTRUCTURE”

Alex Polvi (@polvi)

A CONTAINER ENGINE

§  Portability

§  Application centric (no wonder Dev’s love it)

§  Versioning of application state

§  Reusability

DOCKER PROMISES

§  Started as an internal project for DotCloud

§  Open sourced in March 2013

§  Originally in Python and used LXC

DOCKER FACTS

§  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

§  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

DOCKER LAYERS

§  Designed to run one process

§  Let’s reflect on this

§  Not quite true

DOCKER SINGLE PROCESS

§  Persistent data should be stored elsewhere §  Database §  Bind mounts to host

§  Moves the problem of state outside the container

DOCKER: WHERE IS THE DATA?

§  Hub.docker.com §  Push/Pull images §  Git again?

DOCKER: REGISTRY

Docker – Ecosystem

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

§  Loads of potential to be disruptive

§  Where can it improve? §  Management utilities §  Networking §  Security

DOCKER: IS IT READY?

§  Best fit §  Microservices §  Stateless applications §  Speeding development process

(CI etc) §  “PaaSish” systems

DOCKER: IS IT READY?

DEMO TIME

§  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

ONMETAL

CORE OS

ONMETAL ONMETAL

CORE OS CORE OS

CLUSTER MANAGEMENT

(FLEET) ETCD

SOME HELPERS

CLOUD LOAD BALANCER

DOCKER DOCKER

DOCKER DOCKER

DOCKER DOCKER

DOCKER DOCKER

github.com/srirajan/onmetal-docker/

bt.ly/rs-onmetal-docker

THANK YOU www.rackspace.co.uk/devops