OpenShift is a container platform for deploying and managing containerized applications. It uses Kubernetes for orchestration and Docker containers. OpenShift provides developers a way to build, deploy and manage applications throughout the lifecycle using containers and provides operations with stability, security and resource management tools. It supports choice of programming languages, continuous deployment and integration, and scaling of applications.

1. OPENSHIFT
Build, deploy & manage open, standard containers
Jonh Wendell
Sr. Software Engineer
Nov 26, 2016

2. OPENSHIFT2
Hardware
Host OS
LIBS A LIBS B LIBS..
APP A APP B
Hardware
Guest OS
LIBS A
APP A
Hypervisor
Guest OS
LIBS B
APP B
Guest OS
LIBS C
APP C
Hardware
Container
LIBS A
APP A
Host Minimal OS
Container
LIBS B
APP B
Container
LIBS C
APP C
Traditional Virtual Containershared system isolation process isolation

3. OPENSHIFT3
Containers
Isolation instead of Virtualization
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Kernel Namespaces
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Process
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Network
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Mount
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User
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Resource Limits
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Cgroups
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Security
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SELinux

4. OPENSHIFT4
Image BImage A
Hardware
Container
APP A
Image
Host Minimal OS
Container
APP B
Image
Container
APP C
Image
Docker Engine
RHEL
JDK
Jboss-EAP
Libs A Libs B
App A App B
docker pull <image>
Docker Registry

5. OPENSHIFT5
Let’s talk about apps
Modern apps
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Commonly delivered as services i.e.
software-as-a-service
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Web applications, Mobile application
software
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Designed for continuous delivery
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Designed to scale-up and down
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Can utilize modern cloud platforms

6. OPENSHIFT6
Let’s talk about apps
Modern apps development
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Need to match speed of growing
business
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Microservices
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Continuous delivery
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A/B, Canary
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The twelve-factor application for cloud
native applications
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Refer : https://12factor.net/

7. OPENSHIFT7
PaaS = <3
OpenShift creates a peaceful
environment for both parties
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Operations care about stability and
performance
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Developers just want environments
without waiting

8. OPENSHIFT8
PaaS? Kind of like Amazon, right?
Nope!

9. OPENSHIFT9
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A container platform to create, modify, deploy containerized applications.
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Platform to deploy microservices
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Choose programming languages you want
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Continuous deployment
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Self service platform
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Platform as a service
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Can run on physical, virtual infrastructure
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Can run on private and public clouds

10. OPENSHIFT10
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Uses Kubernetes orchestration, management and Docker as the container technology.
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Features for managing complete application lifecycle
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Automated image builds and promotion.
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Deployments integrated with builds, pipeline and CI.
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Fully integrated Docker registry.
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Networking (SDN, DNS, routing) for container networking.
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Integration with Docker Hub and other 3rd party enterprises registries.
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Integrated enterprise features e.g authentication (LDAP etc), quota etc.

11. OPENSHIFT11
Apps in OpenShift
You can use the Web Console or the OC Command Line tool
Create Applications:
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From source code
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Local or remote git repository
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Auto detect changes to the applications and trigger the build process
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Using OpenShift template
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Using Docker images
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E.g. $ oc new-app kubernetes/guestbook

12. OPENSHIFT12
Building Docker Images
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Auto detects the programming language from the source code and converts it to a
runnable docker image.
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End users do not need to write Dockerfile
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Enable existing source build tools e.g. maven, rake
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Project : https://github.com/openshift/source-to-image

13. OPENSHIFT13
OpenShift Offerings
OpenShift Origin
Community Edition
OpenShift Dedicated
Deployed on cloud e.g. AWS
OpenShift Online
Hosted Solution
OpenShift Container
Platform
On-Premise clouds

14. OPENSHIFT14
Running OpenShift on my laptop
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# systemctl start docker
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$ oc cluster up
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Get OC binary from https://github.com/openshift/origin
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Run “$oc cluster up”
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Container Development Kit (CDK)
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http://developers.redhat.com
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Demo

15. OPENSHIFT15
OpenShift as a PaaS
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Autoscaling
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Need Metrics enabled (Heapster or combination of Heapstar and Hawkular)
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HAProxy
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Integrating external service
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Router
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Container health check using Kubernetes probe
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Logging infrastructure can be integrated e.g. EFK (Elasticsearch, Fluentd,Kibana)
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Quota
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Allocating resource quota for a project in OpenShift

16. OPENSHIFT16
For Developers
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Eclipse IDE integration.
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Developers do not need to know much about Docker and Kubernetes.
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Integration with Jenkins running in OpenShift
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Ability to move from QA -> Stage -> Production

17. THANK YOU
jonh.wendell@redhat.com
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linkedin.com/company/red-hat
youtube.com/user/RedHatVideos
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