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Kubernetes Deployment pipeline with Spinnaker

Spinnaker is a continuous delivery platform designed to manage the deployment of applications to cloud environments, including Kubernetes.^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md] It provides flexible, configurable pipelines for automated deployment and offers a global view of application status across environments^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].

Architecture

Spinnaker is composed of several microservices that handle different aspects of the delivery process^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md]:

  • Deck: The UI for visualization and interaction^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Gate: The API gateway^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Igor: Integrates with build systems like Jenkins^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Orca: The orchestration engine responsible for executing pipelines^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Clouddriver: Manages interactions with cloud infrastructure^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Front50: Manages persistent data^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Echo: Handles communication and events^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].

To function, Spinnaker requires backing services such as Redis for caching and Minio (or S3) for persistent storage^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].

Deployment Prerequisites

Before deploying applications via Spinnaker, the environment typically requires a PaaS-capable setup^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md]:

  • Container Runtime: A unified container environment (e.g., Docker).
  • IaaS Layer: Kubernetes infrastructure^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Middleware & Storage: Reliable clusters for databases, message queues, and distributed storage^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Monitoring & Logging: Systems like Prometheus and ELK^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • CI/CD: Integration with build tools (e.g., Jenkins) and deployment tools (Spinnaker)^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].

Pipeline Workflow

In a typical Spinnaker pipeline for Kubernetes, the workflow often follows a "Build -> Deploy" pattern, integrating with a tool like Jenkins.

1. CI/CD Integration (Jenkins Stage)

The pipeline often begins with a Jenkins job triggered by Spinnaker^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md]. This job handles: * Compiling code. * Building a Docker image. * Pushing the image to a registry (e.g., Harbor)^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md]. * Spinnaker can inject parameters (like version tags or commit IDs) into the Jenkins job to ensure traceability^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].

2. Kubernetes Deployment (Deploy Stage)

Once the image is built, Spinnaker manages the deployment to the Kubernetes cluster^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].

  • Configuration: Users define the deployment configuration within Spinnaker, specifying details such as:
    • Account: The Kubernetes cluster account (e.g., cluster-admin)^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
    • Namespace: The target namespace (e.g., test or prod)^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
    • Containers: The container image, ports, environment variables, and resource limits^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Strategy: Common strategies include Rolling Update (Red/Black) to minimize downtime^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].
  • Manifest Management: Spinnaker applies Kubernetes manifests (Deployments, Services, Ingress) to the cluster^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md].

3. Verification

After deployment, the pipeline may include manual judgment or automated checks^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md]. In production workflows, this ensures the application is stable before proceeding or before the old version is terminated.

Sources

^[400-devops__06-Kubernetes__k8s-paas__08.spinaker部署与应用.md]