External Dependencies

Significant changes to containerd and runc are underway in the development (master) branches. If you want to try out cri-containerd please take care to checkout the specified commits for the below listed dependencies. We will be syncing up to the current master branches soon. Thank you for taking a look at our release!

• containerd: v0.2.3-1098-g8ed1e24
• runc: v1.0.0-rc3
• cni: v0.4.0
• Kubernetes: v1.7+

Features

cri-containerd v0.1.0 supports all basic functionalities including:

• Sandbox/container lifecycle management;
• Image management;
• Sandbox networking;
• Container logging;
• Run command synchronously in container etc.

Missing Features

Following features are not supported in v0.1.0. They will be added in future version.

• Container streaming: Exec, Attach, Portforward;
• Security context: RunAsUser, Selinux, Apparmor, Seccomp, Sysctl;
• Container metrics: CPU/memory/disk usage of a container.
• Image filesystem metrics: Image filesystem usage.
• Host port: Expose container port on a host port.

Known Issues

• cri-containerd doesn't checkpoint state. cri-containerd will lose all sandbox/container/image information across restart.
• Frequently containerd restart may cause state mismatch between cri-containerd and containerd.
• Pause container getting killed unexpectedly will cause network resource leakage.

Try it Out

Please follow the getting started instruction.