tools 1.2. Splitting CI and CD 1.3. Promotion of releases between environments 1.4. Modeling multi-environment configurations 1.5. Auto-scaling and dynamic resources 1.6. GitOps rollbacks 1.7 today are ​Flux ​and ​ArgoCD​. As several organizations are adopting GitOps tools, it is clear that a set of best practices are needed in several areas that are not currently covered by the existing tools standards we aim to implement in what we defined as our vision for GitOps2.0. We will explain a set of solutions both in theory (the vision) as well as in practice (our implementation).

what we call the “desired state of your system”. Once you deploy all of this into the cluster and set up your application ecosystem, we call it an “actual state of your system”. The “Configuration drift” by reviewing the underlying infrastructure provider as well as the Kubernetes cluster state. MULTI-CLUSTER CONFIGURATION MANAGEMENT Being declarative in nature, Kubernetes helps most larger and running across these clusters handle everything on your behalf, and so, it is a great fit from a multi-cluster configuration management perspective. INFRASTRUCTURE AS CODE In the Kubernetes world

structure of bases and overlays. ● A base is a directory with a kustomization.yaml file that contains a set of resources and associated customization. ○ A base has no knowledge of an overlay and can be used for CodeReady Workspaces ` ECOSYSTEM ● Tekton Hub launch ● Tekton community catalog in Hub ● Multi-catalog support in Hub ● Additional Tekton tasks ● Improved S2I Tekton Tasks UX ● Pipeline pause integration with OpenShift ● Application sets ● Argo CD and Tekton integrations ● Dashboard for multi-cluster deployment environments ● GitOps-based project bootstrapping with Tekton, Argo CD, kustomize

cloud service has different APIs, syntax, and other features, and each comes with its own unique set of “gotchas.” This com- plexity is compounded by the need to ensure consistency in deployment, security concepts but have distinct differences in their approach and scope. Monitoring provides a predefined set of metrics and indicators for tracking system health, while observability offers a more flexible and storing sensitive information like API keys and strong passwords, infrastructure access control, multi-factor authentication (MFA), and continuous monitoring and observability. It is crucial to regularly

there weren’t many tools that had fully embraced Kubernetes natively. But a line in that podcast set the course for where I wanted things to head: “To me, GitOps is the holy grail of software and infrastructure declarative model to define instances and automate their deploy- ment. You can think about Kubernetes as a set of APIs that uses state as a central point of deciding what and how to operate on something. Kubernetes the CNCF. In October 2021, the GitOps Working Group released the OpenGitOps Principles [1.10], a set of principles for managing software systems. We’ll look at the four major princi- ples in the sections

Security Familiar tools and Git workflows from application development teams Standard Workflow Multi-cluster consistency 7 Source Git Repository Image Registry CI The GitOps Application Delivery Pipelines Kubernetes-native on-demand delivery pipelines OpenShift GitOps Declarative GitOps for multi-cluster continuous delivery Ecosystem Integrations OpenShift GitOps 11 OpenShift Builds OpenShift OpenShift GitOps Declarative GitOps for multi-cluster continuous delivery 27 OpenShift GitOps Declaratively manage cluster and application configurations across multi-cluster OpenShift and Kubernetes

Approve 4. Multi environment 5. CI/CD 6. Use Repository 7. Agile & Iteration DevOps 1. IaC 讓⼀切都成為 Code 2. Automation 盡可能⾃動化 如果不成，就紀錄它！ 3. Code Review & Approve 審查、複閱、檢查、稽核 4. Multi environment

more ● Configuration Drift: Monitors live state against desired state ● Enterprise Ready: SSO, multi-cluster, and audit trails ● Extensibility: Rich CLI, webhooks, events, and polished web UI @codefresh

的方案是可行的，参照其实现就行 方案二：事务方案 前言（关于 MVCC）： MVCC ( ) ，即多版本并发控制，主要解决的是并发读写时的冲突问题，利用该机制在读写时候可以去除锁机制 Multi-version Concurrency Controller (备注：我认为利用 MVCC 可以保证事务 ACID 中的 C(一致性) 和 I(隔离性)) 方案主要借鉴 leveldb

freedom to choose the 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 that can be treated as code. Declarative means that 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 GITOPS HANDS ON TUTORIAL eBook 12 GitOps Hands On Tutorial In this tutorial, we’ll show you how to set up a CI/CD pipeline. We’ll then deploy a demo application to a cluster, make a small update to the