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DevOps & Automation · Intermediate

CRI-O

A lightweight Kubernetes-specific container runtime implementing the CRI with OCI-compatible runtimes.

Definition

CRI-O is designed solely for Kubernetes and is the default runtime in Red Hat OpenShift.

Example

OpenShift nodes run CRI-O; debugging uses crictl from a node debug pod.

Exam tip

OpenShift = CRI-O; most other distributions default to containerd.

Related terms