Most users follow a three-step process when working with these tools:
Since the container isn't running, you cannot use exec . However, you can use crictl inspect to find where the rootfs is stored on the host.
If your cluster uses containerd (the most common runtime in modern Kubernetes), is an indispensable CRI file system tool. It provides a Docker-like experience but speaks directly to containerd’s namespaces. cri file system tools
Once inside, you are now viewing the container’s root filesystem as the host sees it. You can use standard Linux tools ( ls , find , grep ) without any restrictions.
nerdctl -n k8s.io cp <container-id>:/var/log/app.log ./app.log Most users follow a three-step process when working
To see the filesystem details of a container, including the mount points and the rootfs location on the host:
One of the biggest hurdles when using CRI file system tools is . This is a specific compression format used inside the CPK. Even if you extract a file, it might still be compressed. It provides a Docker-like experience but speaks directly
By integrating these tools into your debugging toolkit, you can inspect, modify, and rescue the filesystems of any container running on any Kubernetes cluster—regardless of the underlying runtime. The next time a pod fails to start, don't just restart it; SSH into the node, wield your CRI tools, and uncover the truth inside the filesystem.
There isn't a single binary called "cri-file-system-tools." Instead, the ecosystem relies on a suite of utilities provided by the runtimes and the broader Linux community.