Before installing the tools, it is crucial to understand which tool fits your specific runtime environment.
Which is running on your host ( containerd or cri-o )? What Linux distribution and version are you configuring?
git clone https://github.com/containers/crifs.git cd crifs make sudo make install
Since "CRI" (Container Runtime Interface) usually refers to the runtime layer, "file system tools" in this context almost always refers to —most notably Nydus , OverlayFS utilities , or CRIU (Checkpoint/Restore). cri file system tools install
: Container runtime sockets belong to the root user group.
Installing crictl is vital for Kubernetes node-level troubleshooting. By setting up these tools, you can effectively manage and debug container runtimes, ensuring your cluster runs efficiently. Debugging Kubernetes nodes with crictl
sudo tar zxvf crictl-$VERSION-linux-amd64.tar.gz -C /usr/local/bin Use code with caution. crictl --version Use code with caution. Method 2: Installing via Package Managers Before installing the tools, it is crucial to
: Besides the config file, you can also set the endpoint using:
runtime-endpoint: unix:///var/run/crio/crio.sock image-endpoint: unix:///var/run/crio/crio.sock timeout: 10 debug: false pull-image-on-create: false Use code with caution. Step 4: Verify the Installation
Now that the tools are installed, you must tell your container runtime to use them. git clone https://github
Kubernetes relies on the Container Runtime Interface (CRI) to manage container lifecycles, images, and file systems. When debugging node-level issues, standard Docker commands will not work if your cluster uses containerd or CRI-O. You need the official CRI tools—specifically crictl and critest —to inspect the container file system, check image layers, and validate runtime performance.
# Check disk usage of runtime directory du -sh /var/lib/containerd/io.containerd.snapshotter.v1.overlayfs/ # Clean unused images crictl rmi --prune
Set your workspace and compression preferences (e.g., ADX-optimized streaming). :