Openshift: Build, deploy & manage open, standard containers
- 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 ● Kernel Namespaces ● Process ● Network ● Mount ● User ● Resource Limits ● Cgroups ● Security ● 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 ● Commonly delivered as services i.e. software-as-a-service ● Web applications, Mobile application software ● Designed for continuous delivery ● Designed to scale-up and down ● Can utilize modern cloud platforms
- 6. OPENSHIFT6 Let’s talk about apps Modern apps development ● Need to match speed of growing business ● Microservices ● Continuous delivery ● A/B, Canary ● The twelve-factor application for cloud native applications ● Refer : https://12factor.net/
- 7. OPENSHIFT7 PaaS = <3 OpenShift creates a peaceful environment for both parties ● Operations care about stability and performance ● Developers just want environments without waiting
- 8. OPENSHIFT8 PaaS? Kind of like Amazon, right? Nope!
- 9. OPENSHIFT9 ● A container platform to create, modify, deploy containerized applications. ● Platform to deploy microservices ● Choose programming languages you want ● Continuous deployment ● Self service platform ● Platform as a service ● Can run on physical, virtual infrastructure ● Can run on private and public clouds
- 10. OPENSHIFT10 ● Uses Kubernetes orchestration, management and Docker as the container technology. ● Features for managing complete application lifecycle ● Automated image builds and promotion. ● Deployments integrated with builds, pipeline and CI. ● Fully integrated Docker registry. ● Networking (SDN, DNS, routing) for container networking. ● Integration with Docker Hub and other 3rd party enterprises registries. ● 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: ● From source code ● Local or remote git repository ● Auto detect changes to the applications and trigger the build process ● Using OpenShift template ● Using Docker images ● E.g. $ oc new-app kubernetes/guestbook
- 12. OPENSHIFT12 Building Docker Images ● Auto detects the programming language from the source code and converts it to a runnable docker image. ● End users do not need to write Dockerfile ● Enable existing source build tools e.g. maven, rake ● 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 ● # systemctl start docker ● $ oc cluster up ● Get OC binary from https://github.com/openshift/origin ● Run “$oc cluster up” ● Container Development Kit (CDK) ● http://developers.redhat.com ● Demo
- 15. OPENSHIFT15 OpenShift as a PaaS ● Autoscaling ● Need Metrics enabled (Heapster or combination of Heapstar and Hawkular) ● HAProxy ● Integrating external service ● Router ● Container health check using Kubernetes probe ● Logging infrastructure can be integrated e.g. EFK (Elasticsearch, Fluentd,Kibana) ● Quota ● Allocating resource quota for a project in OpenShift
- 16. OPENSHIFT16 For Developers ● Eclipse IDE integration. ● Developers do not need to know much about Docker and Kubernetes. ● Integration with Jenkins running in OpenShift ● Ability to move from QA -> Stage -> Production