Centralized configuration at scale
1. Centralized configuration at scale
To support the GitOps methodology, Google offers several tools and services. After platform administrators shift to a central repository, GKE can automatically synchronize configurations and policies across clusters and Cloud resources. Then you can use Config Controller to view details like resource status and issues from a centralized dashboard. Config Controller is a fully managed service that allows you to manage Google Cloud resources using Kubernetes-style declarative configuration. Think of it as extending Kubernetes's powerful configuration management tools to your entire Google Cloud infrastructure. Let's explore the benefits that Config Controller bring. One benefit is simplified management. Multi-cluster configurations and policies can be managed centrally without needing to build tools from scratch. Another benefit is consistent configuration and policy management. You can audit and manage cluster configurations within a version-controlled environment. Config Controller also provides centralized governance for scalable, automated, and reliable management of configurations and systems in production. And Config Controller is secure and consistent. Reduce risk with customizable and consistent policies across environments. Monitor environments to ensure configurations are implemented and governance controls are present. To achieve this high level of configuration management, Config Controller uses Config Sync, Config Controller, and Config Connector. Config Sync continuously syncs your clusters to a central set of configurations stored in one or more Git repositories. This centralized system ensures consistent, auditable, and version-controlled configurations across clusters and environments. Policy Controller enforces programmable policies that define constraints on the desired state. These policies act as guardrails and prevent configurations from violating security and compliance controls. For example, you can block non-compliant API requests or audit the configuration of your clusters and report violations. Policy Controller is part of the Open Policy Agent Gatekeeper project, and features a library of pre-built policies for common security and compliance controls. Policy management best practices can be used to review and maintain configuration compliance. Finally, Config Connector uses an API endpoint to provision and orchestrate GKE and Google Cloud resources. This component can also be run in your cluster. Before we wrap up this section, let's explore the GKE configuration management process at a high level. First, the platform administrator creates policies and configurations and pushes them to a Git repository. The repository can either be hosted in the Cloud or on-premises. Then, GKE Config Sync synchronizes and applies the changes in the GKE clusters. GKE Policy Controller enforces the applied policies, whether they were custom created or selected from the default policy library. Then Config Connector creates resources in Google Cloud, extending the configuration beyond just Kubernetes.2. Let's practice!
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