zoom_in Click to enlarge

CRI-O

▲ ▼

description CRI-O Overview

CRI-O is a lightweight container runtime specifically designed to implement the Kubernetes Container Runtime Interface (CRI). Its primary strength lies in its tight integration with Kubernetes components, ensuring it speaks the native language of the orchestrator without the bloat of general-purpose runtimes. It prioritizes security and stability, making it a preferred choice for environments where Kubernetes compliance is paramount and resource efficiency is key.

help CRI-O FAQ

What problem does CRI-O solve in Kubernetes?

CRI-O is a container runtime built to implement the Kubernetes Container Runtime Interface. Its purpose is to run Kubernetes pods without bringing in the broader Docker engine stack.

How is CRI-O different from containerd?

Both CRI-O and containerd can serve as Kubernetes container runtimes. CRI-O is especially focused on Kubernetes CRI compatibility, while containerd is a broader runtime used by Docker and many Kubernetes distributions.

Does CRI-O build container images?

No. CRI-O is mainly for running containers under Kubernetes, not for authoring images. Tools such as Buildah, Podman, Docker, or Kaniko are typically used to build images.

Which Kubernetes ecosystem is CRI-O closely associated with?

CRI-O is closely associated with the Red Hat and OpenShift ecosystem, along with tools such as Podman and Buildah. It is also used outside OpenShift when teams want a Kubernetes-focused runtime.

swap_horiz

Looking for CRI-O alternatives? Compare top competitors ranked & scored

arrow_forward