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== Kubelet Checkpoint API ==
== Kubelet Checkpoint API ==
This functionality is exposed through a node-local kubelet [https://kubernetes.io/docs/reference/node/kubelet-checkpoint-api/ checkpoint API] (enabled by default in Kubernetes v1.30) that allows you to create a snapshot of a running container.
This functionality is exposed through a node-local kubelet [https://kubernetes.io/docs/reference/node/kubelet-checkpoint-api/ checkpoint API] (enabled by default in Kubernetes v1.30). A checkpoint can be triggered by sending an HTTP POST Request to the kubelet as follows:
<pre>
curl -X POST "https://localhost:10250/checkpoint/<Namespace>/<Pod>/<Container>"
</pre>
=== Example ===
1. Create a Pod
<pre>
cat > pod.yaml <<EOF
apiVersion: v1
kind: Pod
metadata:
name: counters
spec:
containers:
- name: counter
image: busybox:latest
command: ['sh', '-c', 'i=0; while true; do echo $i; i=$((i+1)); sleep 1; done']
EOF
</pre>
<pre>
kubectl apply -f pod.yaml
</pre>
2. Create a container checkpoint
<pre>
curl -X POST "https://localhost:10250/checkpoint/default/counters/counter"
</pre>