with it. Christian has built out a lot of the foundation of GitOps. If you asked me for the best source of GitOps knowledge, I’d say you’ve found them already. —Chris Short Co-chair, OpenGitOps/GitOps allowed them to return their entire platform (not just the workloads running on them) back to its original state. They essentially implemented infrastructure as code by keeping every- thing they wrote (including third principle states: Software agents automatically pull the desired state declarations from the source. This principle is where GitOps starts to differentiate itself from a traditional event-driv- en

is for Everyone Developers Operations Kubernetes Cluster Node 1 Kubernetes (K8s) is an open-source system for automating deployment, scaling, and management of containerized applications. TLDR; which are easily stored and managed in git OpenShift GitOps Principles ● Separate application source code (Java/.Net/etc) from manifests (yaml) ● Deployment manifests are standard k8s manifests ● destination: namespace: argocd server: https://kubernetes.default.svc project: product-catalog source: path: manifests/app/overlays/dev-quay repoURL: https://github.com/gnunn-gitops/product-catalog

teams to improve overall organisational productivity and development velocity.” James Governor, — Source Redmonk.com Executive summary Adopting the platform approach alone is not enough. Organizations observability this is increasingly important. Good DX allows for shift left.” — James Governor, Source Redmonk.com 2021 State of DevOps report The 2021 State of DevOps report released by Puppet and friction. The internal platform approach Use of internal platforms and level of DevOps evolution Source: Puppet While there are many ways to deliver resources and tools to application developers, the

concepts behind GitOps are quite straight-forward: ● Infrastructure as Code: Git is always the source of truth on what happens in the system ● Code changes always go through an automated process software lifecycle 2. Splitting CI and CD with GitOps is not straightforward 3. GitOps doesn’t address promotion of releases between environments 4. There is no standard practice for modeling multi-environment artifacts and normally does not touch (or know about) source 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

Native applications that unifies Deployment, Monitoring and Management. It works by using Git as a source of truth for declarative infrastructure and applications. Automated CI/CD pipelines roll out changes Git. It also makes use of diff tools to compare the actual production state with what’s under source control and alerts you when there is a divergence. The ultimate goal of GitOps is to speed up 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. The most difficult part

automate the deployment and management of applications and infrastructure using Git as the single source of truth. It simplifies and standardizes the deployment and management of complex systems, improves to GitOps? Learn the 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 compliance, and CI/CD. GitOps is a specific 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

as the source code management tool for managing the infrastructure code. In other words, GitOps is an evaluation of infrastructure as code and DevOps practices which uses Git as the single source of truth All the declarative states are stored in the version-controlled system, which acts as the single source of truth. With this version-controlled approach, all the system infrastructure changes are available productivity The source-controlled, validated infrastructure reduces configuration errors that can occur during deployments, saving time for Ops teams to diagnose and fix those errors. Besides, source control allows

Delivery with Argo and Codefresh BRANDON PHILLIPS | CODEFRESH Info slide (not for presentation) Original Abstract: GitOps is the gold standard for managing and deploying Kubernetes applications. In this https://argoproj.github.io/argo-cd/ MyApp k8s manifest MyApp 1. Commit 5. Call ArgoCD to sync MyApp source code 2. Trigger CI 3. Updates App manifest 4. Trigger CD pipeline CI/CD Platform 6. Get latest and horizontal pod scaling MyApp rollout manifest Current State 1. Commit 6. Get latest MyApp source code 2. Trigger CI 3. Updates rollout manifest 4. Trigger canary CD pipeline CI/CD Platform

around Git, i.e., the version control 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 entire state of your cluster kept under source control, diff tools and synchronization agents can compare what’s running in production with what’s under source control — and when a divergence is detected KUBERNETES REFCARD | SEPTEMBER 2022 3 SINGLE SOURCE OF TRUTH In the GitOps world, version control systems (VCS) like Git should be the only source of truth. Whatever changes one wants to perform

CC-BY-SA, if you distribute this document or an adaptation of it, you must provide the URL for the original version. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not trademark of Joyent. Red Hat is not formally related to or endorsed by the official Joyent Node.js open source or commercial project. The OpenStack ® Word Mark and OpenStack logo are either registered trademarks/service