How to perform version control for cloud-native deployment?

Version control for cloud-native deployments is essential to manage changes in infrastructure, configurations, and application code systematically. Here's how to achieve it:

1. Infrastructure as Code (IaC): Use tools like Terraform or CloudFormation to define cloud resources in code. Store these files in a version control system (VCS) like Git to track changes and enable rollbacks.

   • Example: Define a Kubernetes cluster using Terraform, commit the .tf files to Git, and use branches for feature updates.

2. Container Image Versioning: Tag container images with semantic versioning (e.g., v1.0.0) and push them to a registry (e.g., Tencent Container Registry). This ensures reproducible deployments.

   • Example: Build a Docker image with docker build -t myapp:v1.1.0, push it to Tencent Container Registry, and deploy it via Kubernetes.

3. Configuration Management: Store environment-specific configurations (e.g., config.yaml) in Git alongside application code. Use tools like Helm or Kustomize to manage Kubernetes manifests.

   • Example: Use Helm charts to define Kubernetes deployments, store them in Git, and deploy with helm upgrade --install myapp ./chart --version 2.0.0.

4. CI/CD Pipelines: Integrate Git with CI/CD tools (e.g., Tencent Cloud CI/CD) to automate testing and deployment. Each commit triggers a pipeline to validate and deploy changes.

   • Example: A GitHub push triggers a Tencent Cloud CI/CD pipeline to build, test, and deploy a containerized app to a Kubernetes cluster.

5. Immutable Infrastructure: Avoid manual changes to running instances. Instead, redeploy updated images or configurations from Git to ensure consistency.

   • Example: Replace a Kubernetes pod with a new version (kubectl set image deployment/myapp myapp=myapp:v1.2.0) instead of SSHing into the pod.

For cloud-native deployments, Tencent Cloud provides services like Tencent Kubernetes Engine (TKE) for container orchestration and Tencent Container Registry for secure image storage, both integrated with Git workflows.