SHA256: 00a98c14081a7d090bfdd44f3c16812a046c2642925fce0ec76bd3c94273eee1

Welcome! cri-containerd has graduated to v1.0.0-beta!!!

Highlights

In this release we focused on test, bug fix, and usability.

Installation

Using kube-up.sh to bring up a production quality Kubernetes cluster on GCE was complete. This would enable users to use containerd and cri-containerd in their production Kubernetes environments as the container runtime. Steps to use kube-up.sh can be found here.

Debuggability

We've tried to provide docker like debug experience using crictl to debug, inspect, and manage pods, containers, and images. The user guide for crictl could be found here. Example:

$ crictl ps -a
CONTAINER ID        IMAGE                                                                                                                       CREATED             STATE               NAME                    ATTEMPT
cde98b50b1155       sha256:5d049a8c4eec92b21ca4be399c260166d96569a1a52d497f4a0365bb55c1a18c                                                     2 weeks ago         CONTAINER_EXITED    kubedns                 0
3fae43b5d5eb3       sha256:5feec37454f45d060c5f528c7d0bd4958df39e7ffd2e65ae42aae68bf78f69a5                                                     2 weeks ago         CONTAINER_EXITED    dnsmasq                 0
b41a6661c98a3       sha256:db76ee297b8597fc007b23a90619314b8405bb1df6dcad189df0a123a09e7ecc                                                     2 weeks ago         CONTAINER_EXITED    sidecar                 0
5a4a348431b69       gcr.io/kubernetes-e2e-test-images/redis-amd64@sha256:3e01bcaf67cb9b5c9fa7f57ba92539c8962d59c9647b91e9ec5047a89e2bc49a       2 weeks ago         CONTAINER_EXITED    master                  0
0245c61fdf85d       sha256:69854bafc1214f1a7f88c32f193dd0112e4d89d5bd9da9a85d95d5735acbc397                                                     2 weeks ago         CONTAINER_EXITED    nginx                   0

Monitoring

Containerd integration with cadvisor was complete. Now Kubernetes Summary API is supported. The only exception is container log stats, which will be supported in next release.

Test

In terms of testing we have passed:

• ALL CRI validation tests
• ALL regular node e2e tests
• ALL regular e2e tests

All the test results are public: https://k8s-testgrid.appspot.com/sig-node-containerd.

External Dependencies

• containerd: v1.0.0
• runc: 74a17296470088de3805e138d3d87c62e613dfc4
• cni: v0.6.0
• Kubernetes: v1.9+ (cri-containerd v1.0.0-beta.0)
• crictl: v1.0.0.alpha.0

Note: Because of Kubernetes container runtime interface change, cri-containerd v1.0.0-beta.0 requires Kubernetes v1.9 or later. With older Kubernetes version, container exec has known issue https://github.com/kubernetes-incubator/cri-containerd/issues/417, and container logging won't work.

Try It Out

• For a production quality cluster on GCE brought up with kube-up.sh, see here.
• For a multi-node cluster installer and bring up steps using ansible and kubeadm, see here.
• For creating a cluster from scratch on Google Cloud, see Kubernetes the Hard Way.
• For a custom installation from release tarball, see here.
• For a installation with LinuxKit on a local VM, see here.

Contributors

We'd like to extend a thanks to the following people who contributed to this release:

• @Random-Liu
• @yanxuean
• @mikebrow
• @miaoyq
• @abhi
• @dnephin
• @zhangzhenhao
• @weiwei04
• @justincormack
• @jessfraz
• @cpuguy83
• @spiffxp