Origins in DevOps Kubernetes and containers Cloud-Native DevOps A DevOps Operating Model GitOps Principles Declarative Versioned and Immutable Pulled Automatically Challenges of Infrastructure as Code Containers Change the Game Argo CD Flux Open Cluster Management Other GitOps Tools PipeCD Keptn Pulumi Kubernetes Operator Reflecting an Organizational Boundary Kubernetes Platform Administrator Kubernetes Application Developer Other Boundaries GitOps Repo Example Conclusion 33 Chapter 6–CI/CD

and organized them by low, mid, and high DevOps maturity. The report highlighted a DevOps maturity model that shows 80% of organizations being ‘stuck in the middle’, yet to reach high levels of DevOps maturity Stream-aligned teams are essentially application development teams that build features and release code into production. Platform teams, on the other hand, exist to support application development teams and make make resources available to them whenever needed. Application development teams Application development teams deliver applications and products to end-users. These teams are aligned according to the organization’s

of truth Operations through Git workflows 5 GitOps Workflow a declarative approach to application delivery A A A What you want (desired state) What you have (current state) CD Why GitOps? Git workflows from application development teams Standard Workflow Multi-cluster consistency 7 Source Git Repository Image Registry CI The GitOps Application Delivery Model 8 Source Git Repository CI CD The GitOps Application Delivery Model Pull Request Push Pull Push Pull Pull Request 9 Source Git Repository Image Registry CI The GitOps Application Delivery Model Config Git Repository

characteristics and selling points, the current GitOps tools focus only on the deployment part of an application and nothing else. They solve the “I want to put in my cluster what is described in Git” problem code. But in most cases, in order to run unit tests, you need access to the source code of the application. The current crop of GitOps tools cannot run unit/integration tests. That would require visibility you are again mixing CI with CD and you admit that GitOps does not cover this scenario. 2. “We open a new pull request to the other environment.” This means that you are forced to have different Git

drive operations. GitOps is a way to do Continuous Delivery. More specifically, it is an operating model for building Cloud Native applications that unifies Deployment, Monitoring and Management. It works best tools for the different parts of your CICD pipeline. You can select a set of tools from the open source ecosystem or from closed source or depending on your use case, you may even combine them configuration is guaranteed by a set of facts instead of by a set of instructions. With your application’s declarations versioned in Git, you have a single source of truth. Your apps can then be easily

the application. Ideally, the developer focuses mainly on delivering business value via code. Thus, to improve developer experience, GitOps emerged where infrastructure and application configuration ecosystem. The focus is entirely on keeping Git as a single source of truth for infrastructure and application configuration changes. In an ideal world, this approach allows the developer to focus on working kept alongside application code in Git. Keeping your entire system in Git means that your development team uses familiar Git-based workflows and pull requests to deploy both application and infrastructure

differences between GitOps and DevOps, and how to ensure Git is the single source of truth for your application in our free Understanding GitOps guide. DOWNLOAD NOW | 05 3 KEY ELEMENTS FOR YOUR GITOPS implementation of DevOps that uses Git as the single source of truth for declarative infrastructure and application code. In GitOps, the desired state of the system is versioned and stored in a Git repository, automates application code deployments and infrastructure management. Adhere to best practices by creating separate repos for your application code, and configs. Updates to the application repo trigger

over a decade, software companies have been trying to move away from the waterfall approach to application development to the DevOps approach. Instead of throwing code over a wall to a separate engineering the complexity of the steps previously handled by large teams must be adopted. The monolithic application should be split up into microservices that can each be owned by a single team. Organizational changes and updates very quickly in response to users’ feedback without taking down the whole application and improves development metrics by orders of magnitude in some cases. However, developers using

realize. Created for a cloud-native world, GitOps makes developers more productive while improving application stability, security and compliance – and it does all this without the need for developers to learn Business Performance: The Facts 5 WHAT IS GITOPS? GitOps is a set of best practices and an operational model that reduces the complexity of Kubernetes and makes it easier to deliver on the promise of DevOps from the application code itself to the underlying infrastructure and configuration – you can keep it in version control. This means the desired state and any changes of an entire application stack from

of Ops. GitOps is rapidly gaining popularity to extend the scope of DevOps further to include application infrastructure. In this article, we will have a look at GitOps and how to leverage it for delivering GitOps is a set of practices that are aimed at managing the underlying infrastructure of an application. It utilizes Git as the source code management tool for managing the infrastructure code. In other management, which both: Increases the overall visibility Reduces the management overhead of the application infrastructure GitOps allows developers or the Ops team to declare their infrastructure as code