Ansible: Infrastructure as Code for OpenShift
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This document discusses infrastructure as code (IaC) and how Ansible can be used to deploy OpenShift Container Platform (OCP) on Microsoft Azure. It provides context on the evolution of software development practices and how infrastructure is now treated as code. Ansible modules can provision Azure virtual machines and configure OCP. Molecule can test Ansible roles. The presentation demonstrates deploying OCP on Azure using Ansible playbooks and includes a demo.
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Ansible: Infrastructure as Code for OpenShift
- 1. Ansible: Infrastructure as Code OpenShift on Azure Ignacio Sánchez Roberto Carratalá
- 3. Evolution of Software Development ● Versioning ○ Shared folders ○ Early versioning: CVS ○ Branching: Subversion ○ Tagging, releasing ○ Decentralized, parallel: Git ○ Pull request, code review Development Evolution IaC Ansible OCP Azure DemoMolecule
- 4. Evolution of Software Development ● Build and deploy ○ Automated building ○ Continuous Integration ○ Continuous Delivery/Deployment ● Testing ○ Source code analysis ○ Continuous testing Development Evolution IaC Ansible OCP Azure DemoMolecule
- 5. Evolution of Software Development ● Agile ○ Scrum/Kanban ○ Continuous releases, sprints ○ Product mindset, squads, guilds Product Backlog Sprint Backlog Release Development Evolution IaC Ansible OCP Azure DemoMolecule
- 6. Evolution of Software Development Silo Organization Agile Organization Development Evolution IaC Ansible OCP Azure DemoMolecule
- 7. ¿What about Infrastructure? Development Evolution IaC Ansible OCP Azure DemoMolecule
- 8. Infrastructure is part of the Squad DEV OPS Development Evolution IaC Ansible OCP Azure DemoMolecule
- 9. ● Management of infrastructure in a descriptive model using the same versioning model as source code ○ Virtual Machines ○ Networking ○ Storage ○ Etc. Infrastructure as Code (IaC) Development Evolution IaC Ansible OCP Azure DemoMolecule
- 10. IaC Life Cycle DeployTestingIntegrationCode It’s software after all... Development Evolution IaC Ansible OCP Azure DemoMolecule
- 11. Requirements of IaC PRIVATE PUBLIC HYBRID Development Evolution IaC Ansible OCP Azure DemoMolecule
- 12. Benefits of IaC ● Speed ● Version tracking ● Dependency management ● Reproducible environments ● Quality ● Focus ● Easy I+D Development Evolution IaC Ansible OCP Azure DemoMolecule
- 13. ¿How to make it happen? Development Evolution IaC Ansible OCP Azure DemoMolecule
- 14. Ansible ● Ansible ● Ansible Modules for Azure ● Ansible Networking ● Host Provisioning / Configuration ● Openshift Ansible Development Evolution IaC Ansible OCP Azure DemoMolecule
- 15. Immutable Infrastructure ● Infrastructure paradigm in which servers are never modified after they're deployed. ● If something needs to be updated, fixed, or modified in any way, new servers built from a common image with the appropriate changes are provisioned to replace the old ones. ● After they're validated, they're put into use and the old ones are decommissioned. Development Evolution IaC Ansible OCP Azure DemoMolecule
- 16. Benefits of Immutable Infrastructure ● The benefits of an immutable infrastructure include more consistency and reliability in your infrastructure and a simpler, more predictable deployment process. ● It mitigates or entirely prevents issues that are common in mutable infrastructures, like configuration drift and snowflake servers. ● Includes comprehensive deployment automation, fast server provisioning in a cloud computing environment, and solutions for handling stateful or ephemeral data like logs. Development Evolution IaC Ansible OCP Azure DemoMolecule
- 17. Molecule ● Provisions Azure Virtual Machines and necessary hardware ● Runs role against the new VMs ● Performs linting and code analysis ● Executes automated tests like Testinfra ● Destroys all provisioned hardware Development Evolution IaC Ansible OCP Azure DemoMolecule
- 18. Openshift Container Platform ● Architecture ● Master Nodes ● Infra Nodes ● Application Nodes ● Registry / Etcd / Router ● SDN ● Storage ● Bastion Development Evolution IaC Ansible OCP Azure DemoMolecule
- 19. Openshift Architecture Development Evolution IaC Ansible OCP Azure DemoMolecule
- 20. Openshift on Azure ● Resource groups ● Azure DNS ● Azure Virtual Networks ● Network Security Groups ● Availability set ● Virtual Machines ● Load Balancer ● Storage Account ● Service Principal Development Evolution IaC Ansible OCP Azure DemoMolecule
- 21. Ansible Deployment of OCP in Azure Development Evolution IaC Ansible OCP Azure DemoMolecule bootstrap.sh host-preparationbastionopenshift-infra configuration.yml prerequisites deploy_cluster
- 22. Ansible Deployment of OCP in Azure ● Provision the Microsoft Azure Instances ● Configuration the Openshift Bastion ● Openshift Host preparation ● Deploy cluster of OpenShift ● Post deployment activities Development Evolution IaC Ansible OCP Azure DemoMolecule
- 23. Ansible Deployment of OCP in Azure Development Evolution IaC Ansible OCP Azure DemoMolecule
- 24. DEMO https://github.com/drhelius/ansible-azure-openshift Development Evolution IaC Ansible OCP Azure DemoMolecule
- 25. Links of Interest ● Ansible Azure OpenShift Code ● Infrastructure as Code ● Configure OpenShift for Azure Guide ● Reference Architecture - Deploying Openshift 3.9 in Azure ● OpenShift Container Platform Reference Architecture Implementation Guides
- 26. Q / A
- 27. THANK YOU
Editor's Notes
- Who knows Ansible? And for what purpose? For Infrastructure?
- For testing the infrastructure, in Ansible you can use Molecule. Hard to prove the playbooks, to the infrastructure that you use
- How many of you used / knows Openshift?