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Showing posts from February 26, 2021

Scenario-Based interview DevOps - 1

  Application Deployment with Infrastructure Changes Scenario: You have a critical application that needs to be updated with new features. The update requires changes to the infrastructure as well. How would you manage this deployment to ensure minimal disruption? Answer: I would: Plan and Document : Thoroughly document the changes to the application and infrastructure. Review the impact of these changes on the existing system. Staging Environment : First, deploy the changes in a staging environment that mirrors production to test the integration and performance. Automated Testing : Run automated tests to verify that the new features work as expected and do not introduce new issues. Blue-Green Deployment : Use a blue-green deployment strategy to ensure that the application is available during the transition. Deploy the new version alongside the existing version, then switch traffic to the new version once it's confirmed to be working correctly. Rollback Plan : Have a rollback pla...

DevOps Roots and Origins

  Early Roots and Origins Pre-DevOps Era (Before 2000s) : Traditional Software Development : In the past, software development and IT operations were often handled by separate teams. Developers wrote and tested code, then handed it off to operations teams for deployment and maintenance. This separation often led to inefficiencies and communication breakdowns. Agile Movement (Early 2000s) : Agile Manifesto (2001) : The Agile movement, formalized by the Agile Manifesto in 2001, introduced principles like iterative development, collaboration, and flexibility. While Agile improved development processes, it did not fully address operational concerns or the handoff issues between development and operations. Emergence of DevOps Introduction of the Term "DevOps" (2009) : Patrick Debois : The term "DevOps" was popularized by Patrick Debois, who organized the first DevOpsDays conference in Belgium in 2009. DevOps was proposed as a way to bridge the gap between development and...