INTRODUCTION TO OPENSHIFT -...

RED HAT CONFIDENTIAL1

INTRODUCTION TOOPENSHIFT

Martin SauvéArchitecte de solutions21 janvier 2015

● Provide ubiquitous access to data and services

● Achieve better quality of service

● Rapid innovation and faster time to market

I.T. TRANSFORMATION FOR EVERYONE

4 RED HAT CONFIDENTIAL

THREE PILLARS OF AN I.T. ORGANIZATION


THE PEOPLE


OPERATIONALSTABILITY

RAPID DEVELOPMENT

THE I.T. BALANCING ACT

To meet the growing demands of the business, developers and I.T. operations must find balance...


THE PROCESS AND THE TECHNOLOGY


TYPICAL DEVELOPMENT LIFECYCLE

1. Have Idea2. Get Budget3. Submit Hardware Request4. Wait...5. Get Hardware6. Rack and Stack Hardware7. Install Operating System8. Install Operating System Patches9. Create User Accounts10. Deploy Application Server11. Deploy Framework/Tools12. Code13. Test14. Buy and Configure Prod Servers15. Push to Prod16. Launch17. Order More Servers to

Meet Demand18. Wait…19. Deploy New Servers20. Etc.

PHYSICAL VIRTUAL

1. Have Idea2. Get Budget3. Submit VM Request4. Wait...5. Deploy Application Server6. Deploy Framework/Tools7. Code8. Test9. Configure Prod VMs10. Push to Prod11. Launch12. Request VMs to Meet Demand13. Wait...14. Deploy New VMs15. Etc.


PRODDEV TESTLOCAL

DEV

PROVISIONING

PAIN POINT

TYPICAL ENVIRONMENT PROVISIONING

PROVISIONING

PAIN POINT PROVISIONING

PAIN POINT


DEVLOCAL DEV

TYPICAL DEPLOYMENT PIPELINE

MANUAL, ERROR-PRONE

PROCESS

TEST PROD

MANUAL, ERROR-PRONE

PROCESS

MANUAL, ERROR-PRONE

PROCESS


WHAT IF...

We could automate environment provisioning?

We could standardize technology stacks and platforms?

We could consolidate our resources and pool usage?


REALIZING I.T. EFFICIENCY

COLLABORATION

AUTOMATIONSTANDARDIZATION

CONSOLIDATION


APPLYING THE METHODOLOGIES

DEVOPSDEVOPS


CLOUD CLOSES THEINNOVATION GAP

CLOUDCOMPUTING


EPHEMERAL ANONYMOUS

POOF!

CLOUD SERVERS ARE...

MULTI-TENANT


RAPIDELASTICITY

SELF-SERVICE PROVISIONING

RESOURCEPOOLING

NETWORKACCESS

MEASUREDSERVICE

CLOUD COMPUTING CHARACTERISTICS


COMPUTE RESOURCES(CPU, RAM, Network, Disk)

VIRTUAL GUEST IMAGES

OPERATING SYSTEM

APPLICATION PLATFORM(App Server, Middleware, Languages, Frameworks)

APPLICATION

Automated and Managed by the Cloud Provider

Provided and Controlled by the Cloud Consumer

IAAS

INCREASED AUTOMATION

DEVELOPER TOOLING(Source Control, Build Tools, CI)

CLOUD SERVICE MODELS

PAAS SAAS

INCREASED CONTROL

IMPLEMENTING A PAAS

The use of Platform-as-a-Service technologies will enable IT organizations to become more agile and more responsive to the business needs. —GARTNER


Multi-Language Auto-Scaling Self-Service Open Source

Enterprise-Grade Secure

Built on Red Hat

OPENSHIFT IS PAAS BY RED HAT


Public PaaS

Service

On-premise or Private

PaaSSoftware

Open Source PaaSProject

RED HAT'S PAAS STRATEGY


Public - Hybrid - Private - Virtualization - Bare Metal

OPENSHIFT PAAS ON YOUR CHOICE OF CLOUD OR INFRASTRUCTURE...


OpenShift BrokerManagement and Orchestration Engine

RHEL


OpenShift Nodes Application Hosting Infrastructure

Broker (RHEL)

Node (RHEL)

Node (RHEL)

AN OPENSHIFT BROKER MANAGES MULTIPLE OPENSHIFT NODES


Broker (RHEL)

RHEL

Node


Node (RHEL)

Node (RHEL)

A NODE IS AN INSTANCE OF RHEL

Red Hat Enterprise Linux


RHEL GEAR

Node


GEAR GEAR

MyApp

HerApp

HisApp

Broker (RHEL)

Node (RHEL)

Node (RHEL)

OPENSHIFT USER APPLICATIONS RUNS IN CONTAINERS CALLED GEARS



RHEL

SE

Lin

ux

SELinux

SE

Lin

ux

GEAR

Node


MyApp

Broker (RHEL)

Node (RHEL)

Node (RHEL)

SELinux Security• “Jail” around Gear• MAC instead of DAC• Process/memory protection• Pre-configured for you

GEARS USE SELINUX FOR PRE-CONFIGURED SECURITY



RHEL GEAR

Node


CG

rou

ps C

Grou

ps

MyApp

Broker (RHEL)

Node (RHEL)

Node (RHEL)

CGroups Resource Mgmt• Sets upper bounds• CPU• Memory• Disk

GEARS USE LINUX CGROUPS FOR RESOURCE MANAGEMENT



RHEL

SE

Lin

ux

GEAR

Node


CG

rou

ps

GEAR IDLED

MyApp

HerApp

Broker (RHEL)

Node (RHEL)

Node (RHEL)

IDLE GEARS CAN BE “DE-HYDRATED” BY THE OPENSHIFT BROKER



RHEL


Node


Broker (RHEL)

Node (RHEL)

Node (RHEL)

OPENSHIFT MULTI-TENANCY PROVIDES DENSITY, EFFICIENCY, AND SECURITY


● OpenShift Nodes are assigned a Node Profile● Node Profile describes resources (RAM, CPU...)

available to each gear

● Nodes are assigned a capacity (max_gears)

● Nodes have a default gear quota by user

● Max gears can be adjusted for individual users● oo-admin-ctl-user -l username --setmaxgears 101

OpenShift Nodes

STREAMLINING DEVELOPMENTWITH OPENSHIFT

The use of Platform-as-a-Service technologies will enable IT organizations to become more agile and more responsive to the business needs. —GARTNER


TYPICAL DEVELOPMENT LIFECYCLE



PHYSICAL VIRTUAL



RHEL


Node


DEVELOPER

Broker (RHEL)

Node (RHEL)

Node (RHEL)

A developer has a new idea for an application. First,

they need to create a new gear in OpenShift...

DEVELOPER WORKFLOW


RHEL


Node


MY GEAR

DEVELOPER

Broker (RHEL)

Node (RHEL)

Node (RHEL)

REST

Web ConsoleEclipse IDECmd Line

GEAR CREATION (WEB, CLI, ECLIPSE)

cronlogssshd


RHEL

Node


JBoss

DEVELOPER

MY GEAR

Broker (RHEL)

Node (RHEL)

Node (RHEL)

REST


Cartridges are how OpenShift installs languages

and middleware


cronlogssshd

OPENSHIFT AUTOMATES GEAR CONFIGURATION VIA CARTRIDGES


RHEL

Node


JBoss

DEVELOPER

MY GEAR

Broker (RHEL)

Node (RHEL)

Node (RHEL)

Etc.

Etc.

Ruby

Python

PHP

Java

Postgres

MySQLJBoss EWS

JBoss EAP

CUSTOM


REST


cronlogssshd

CARTRIDGE TYPES


OpenShift Enterprise cartridges are a mechanism to encapsulate application components, for example:

– language runtimes,• Java, PHP, Ruby, Python, Node.js, and Perl

– Middleware,• Jenkins CI server and client, Cron, and the

HAProxy load balancer – and databases

● MySQL, PostgreSQL,

– expose them as services • so developers can use them to create applications

OpenShift Cartridges


Developers select a web framework cartridge – for the desired programming language. – handles HTTP requests and serve web pages or

business APIs. – OpenShift servers route traffic to the application

Combining cartridge– developer can add further cartridges

• Ex: a database or a build server– to provide additional capabilities to the application.

Contain an implementation of the life cycle events● Ex: start, stop, scale...co

L

OpenShift Cartridges


RHEL

Node


JBossCode

GITRepo

DEVELOPER

GIT/SSH

MySQL

MY GEAR

Broker (RHEL)

Node (RHEL)

Node (RHEL)

Developer pushes application code via GIT

source code management system


REST


cronlogssshd

NOW, CODE AND PUSH


RHEL

Node


JBossCode

GitRepo

DEVELOPER

GIT/SSH

jenkins

MySQL

Jenkins

MY GEAR

Broker (RHEL)

Node (RHEL)

Node (RHEL)

Maven


REST


cronlogssshd

OPENSHIFT CAN AUTOMATED BUILD AND TEST WITH MAVEN AND JENKINS FOR CI


RHEL

Node


JBossCode

GitRepo

DEVELOPER

USER

GIT/SSH

MySQL

HTTP/S

MY GEAR

Broker (RHEL)

Node (RHEL)

Node (RHEL)

jenkins

Jenkins

Maven


cronlogssshd

REST


HTTP(S) SERVED FROM GEARS


RHEL

Node

MANY USERS

MySQL

MY AUTO-SCALED APP

JBosscronlogssshd

JBosscronlogssshd

JBosscronlogssshd

HA-Proxy

HTTP/S

Broker (RHEL)

Node (RHEL)

Node (RHEL)



OPENSHIFT AUTOMATES APPLICATION SCALING


STREAMLINING DEVELOPMENT WITH PAAS



PHYSICAL VIRTUAL WITH PAAS


1. Have Idea2. Get Budget3. Code4. Test5. Launch6. Automatically Scale

CRAFTWORK ASSEMBLY LINE


DEVLOCAL DEV

DEPLOYMENT PIPELINE WITH OPENSHIFT

TEST PROD

INTRODUCTION TO OPENSHIFT -...

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