Triage Node-Level Issues In Red Hat Openshift And Kubernetes Using Crictl
Red Hat News, Thursday, September 7,2023
The number of available container runtimes has grown since the release of the Open Container Initiative and runtime-spec (runc). This growth is due to Kubernetes introducing the Container Runtime Interface (CRI) that provides a common interface for interactions between kubelet and the container runtime.
While the original container runtimes like Docker and RKT aimed to meet multiple use cases having complete userspace CLI tools, newer container runtimes such as CRI-O, runC, and crun are targeted at Kubernetes-only use cases and do not have CLI tooling.
One solution for this lack of a CLI is cri-tools. It provides the tool crictl, a common interface to triage issues locally on a Kubernetes node regardless of the container runtime leveraged by Kubelet. The Kubernetes sig-node group released these tools.