Cri File System Tools Install Here

Here’s a step-by-step guide to installing CRI (Container Runtime Interface) file system tools, primarily focusing on cri-tools (which includes crictl for debugging and inspecting container runtimes like containerd, CRI-O, etc.).

Troubleshooting Common Installation Issues

Issue 1: crictl says "connection refused"

Cause: Wrong socket or runtime not running.
Fix:
sudo systemctl status containerd
sudo crictl --runtime-endpoint unix:///run/containerd/containerd.sock info cri file system tools install

mkdir /tmp/upper /tmp/work /tmp/merged
sudo fuse-overlayfs -o lowerdir=/tmp/alpine-rootfs/layer1:/tmp/alpine-rootfs/layer2,upperdir=/tmp/upper,workdir=/tmp/work /tmp/merged
ls /tmp/merged
# clean up:
sudo umount /tmp/merged
rm -rf /tmp/upper /tmp/work /tmp/merged

Example output snippet: