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Openshift or Kubernetes , manifest file

(2024-05-09 15:25:38) 下一个
  • he file defines various aspects of your application deployment, including:
    • Container image to use
    • Number of replicas (pods) to run
    • Resource requests and limits for CPU and memory
    • Environment variables for your application
    • Port mappings for containerized applications
    • Volume mounts for persistent storage
    • Network configurations (optional)
    • Security configurations (optional)

Benefits of Using Manifest Files:

  • Declarative: They specify the desired state, and the Kubernetes API server works to achieve that state. This simplifies deployment management.
  • Version Control: You can version control your manifest files alongside your application code, ensuring consistency and reproducibility of your deployments across environments.
  • Reusability: Well-defined manifest files can be reused for deployments of the same application or similar applications.
  • Portability: Manifest files can be portable across different Kubernetes or OpenShift clusters if they adhere to the same API versions.

Additional Manifest File Types:

There can be multiple manifest files for a single application deployment, defining different Kubernetes or OpenShift resources:

  • Deployment: Defines how pods are created and managed.
  • Service: Exposes an application running on pods as a network service.
  • PersistentVolumeClaim: Requests storage for your application's data.
  • ConfigMap/Secret: Stores configuration data or sensitive information for your application.
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