Container Checkpointing with CRIU in Kubernetes

[vd2892001]

Container Checkpointing with CRIU in Kubernetes:
Kubernetes version: 1.28
Cloud being used: (put bare-metal if not on a public cloud)
Installation method: Container Checkpointing with CRIU in Kubernetes
Host OS: ubuntu 22.04
CRI and version: CRI-O
criu : 4.0

enable_criu_support field in the CRI-O configuration file to true.

curl -sk -X POST “https://localhost:10250/checkpoint/default/nginx/nginx”
–key /etc/kubernetes/pki/apiserver-kubelet-client.key
–cacert /etc/kubernetes/pki/ca.crt
–cert /etc/kubernetes/pki/apiserver-kubelet-client.crt

error
ls -l /var/lib/kubelet/checkpoints/
ls: cannot access ‘/var/lib/kubelet/checkpoints/’: No such file or directory

Why doesn’t the checkpoint file appear in the directory? What configuration is needed to make it appear in the directory? Please help

[adrianreber]

With Kubernetes 1.28 the feature is still marked as Alpha and needs to be explicitly enabled. Starting with Kubernetes 1.30 it defaults to on. You need to activate it.

[vd2892001]

drop_infra_ctr = false
enable_criu_support = true
I have enabled it in the configuration

[adrianreber]

You need to also enable it in Kubernetes.

[vd2892001]

kube-apiserver.yaml: - --feature-gates=ContainerCheckpoint=true
kube-controller-manager.yaml: - --feature-gates=ContainerCheckpoint=true
kube-scheduler.yaml: - --feature-gates=ContainerCheckpoint=true
I activated it in kubenetes but still error

[adrianreber]

You need to activate it also for the kubelet.

[vd2892001]

How can I activate it? Can you guide me?
Can you guide me to enable it in kubelet?