OpenShift In a Nutshell - Episode 02 - Architecture

Presentation By:

Behnam Loghmani

Winter 2016

IRAN OpenStack Users Group

OPENSHIFTIN A NUTSHELL

(Episode 02)

Architecture

IRAN Community| OpenStack.ir

Agenda:

● Layers

● What's is the OpenShift Architecture?

● Security in OpenShift

● Iran OpenStack Community

OpenShift Architecture



Layers



● Docker

● Kubernetes

OpenShift adds:

● Source code management, builds, and deployments

● Managing and promoting images

● Application management at scale

● Team and user tracking



What's the OpenShift Architecture



● Microservices-based

● Running on top of a Kubernetes cluster

● Data about the objects stored in etcd



We have two functions

● REST APIs, which expose each of the core objects.

● Controllers, which read those APIs, apply changes to other objects, and report status

or write back to the object.



Calling the REST API to change the state of the system.

Controllers use the REST API to read the user’s desired state.

Controller try to bring the other parts of the system into sync.



Controller

● Customization of builds and deployments.

● "Business logic" of the system.

● Sync view of the system with what users are doing.

● Changes ripple out through the system very quickly and efficiently.

● Confirm that everything is in the right state.



Security in OpenShift



● Authenticate with credentials.

● Authorize base on roles.



Authentication and Authorization in different parts

● Clients (developers)

● Nodes

● Infrastructure components runs in containers



Authorization

● Openshift policy engine

● Defines actions

● Different roles

● Policy engine checks requests

● secrets



Iran OpenStack Community



Stay in Touch and Join Us:

● Home Page: OpenStack.ir

● Meetup Page: Meetup.com/Iran-OpenStack

● Mailing List: [email protected]

● Twitter: @OpenStackIR , #OpenStackIRAN

● IRC Channel on FreeNode: #OpenStack-ir

Thank YouBehnam Loghmani

Iran OpenStack Community Member

[email protected]

OpenStack.ir

We need to work together to build a better community

OpenShift In a Nutshell - Episode 02 - Architecture

Technology

Transcript of OpenShift In a Nutshell - Episode 02 - Architecture