Snapshot Operator

Snapshot operator makes snapshots for containers running in k8s, and pushes the snapshots to a docker registry for further reuse/restore. It is inspired by kubepush.

Snapshot

apiVersion: "ava.qiniu.com/v1alpha1"
kind: "Snapshot"
metadata:
  name: "example-snapshot"
spec:
  podName: "my-pod"
  containerName: "my-container"
  # full name of the image to the desired snapshot, 
  # including registry host, tag and anything needed to push/pull an image
  imageName: "my-private-registry.com/my-snapshot:v0.0.1"
  # secret used to push the snapshot-ed image, same as an imagePullSecret
  imagePushSecret:
    name: "my-docker-registry-secret"

How to use

0. You will need a running kubernetes cluster with access to, Minikube or Docker for Mac for example.

1. Create custom resource definition for snapshot:

   $ kubectl create -f deploy/crd.yaml

2. Start snapshot operator

   $ kubectl create -f deploy/operator.yaml

3. Create a snapshot

   $ kubectl create -f deploy/cr.yaml

4. You can now use kubectl to check the newly created snapshot. A job in the name of example-snapshot-xxxxx could be observed after a while, it is created by the snapshot operator to perform the docker committing and docker pushing work.

   $ kubectl get snapshot
   NAME                 AGE
   example-snapshot   22s
   
   $ kubectl get job
   NAME                       DESIRED   SUCCESSFUL   AGE
   example-snapshot-bjpf4   1         0            37s