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KodeCloud CKA Container Storage Interface (CSI)

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Container Storage Interface (CSI)

  • Initially k8s only supported docker but as other container runtimes started coming in it became essential to support other container runtimes.
  • CRI defines how k8s will communicate with the container runtimes.
    • So if a new container runtime is created it has to follow CRI to be compatible with k8s.
  • To extend solution to different networks CNI (Container Networking Interface) was created.
  • Similarly CSI was created to support multiple storage solutions.
    • CSI is a standard for exposing storage systems in an arbitrary block and file storage to containerized workloads on Container Orchestrations like Kubernetes, Mesos, and Cloud Foundry.
    • CSI defines what APIs k8s will call to create or delete a volume and it is upto the storage solution to implement the logic.
  • Diagram:
    • attachments/Pasted image 20230524124123.jpg

Last updated: 2023-05-24