可以参考借鉴的项目代码

太复杂，备份出的东西较多 https://github.com/solomonxu/k8s-backup-restore https://dockone.io/article/9194

值得学习，备份结果比较简单，但需要进一步处理 https://github.com/sangwook/k8s-cluster-backup

全套服务（本地、容器、k8s三种部署方式） https://kube-dump.woozymasta.ru/

#!/usr/bin/env bash
# pip3 install jq
# download install yq 
# curl -sLo /usr.local/bin/jq https://github.com/stedolan/jq/releases/download/jq-1.6/jq-linux64
# chmod +x /usr.local/bin/jq
# curl -sLo /usr.local/bin/yq  https://github.com/mikefarah/yq/releases/download/v4.5.0/yq_linux_amd64
# chmod +x /usr.local/bin/yq

bkpdir="backup_$(date +%y%m%d)"
mkdir $bkpdir
cd $bkpdir

for curns in $(kubectl get ns -o jsonpath={.items[*].metadata.name}); do
  mkdir -p $curns
  kubectl get -o=yaml ns $curns | yq -y \
    'del(
      .metadata.annotations."control-plane.alpha.kubernetes.io/leader",
      .metadata.annotations."kubectl.kubernetes.io/last-applied-configuration",
      .metadata.creationTimestamp,
      .metadata.generation,
      .metadata.resourceVersion,
      .metadata.selfLink,
      .metadata.uid
  )' > $curns.ns.yaml

  #for type in ing deploy cm svc ds sts cj pvc secret sa; do
  for type in ingresses deployments configmaps services daemonsets statefulsets  cronjobs jobs pvc pv secret serviceaccounts; do
    for name in $(kubectl --namespace=$curns get $type -l OWNER!=TILLER -o custom-columns=NAME:.metadata.name --no-headers); do

      kubectl --namespace=$curns get -o=yaml $type $name | yq -y \
        'del(
          .metadata.annotations."control-plane.alpha.kubernetes.io/leader",
          .metadata.annotations."kubectl.kubernetes.io/last-applied-configuration",
          .metadata.annotations."pv.kubernetes.io/bind-completed",
          .metadata.annotations."pv.kubernetes.io/bound-by-controller",
          .metadata.annotations."volume.beta.kubernetes.io/storage-provisioner",
          .metadata.creationTimestamp,
          .metadata.finalizers,
          .metadata.generation,
          .metadata.resourceVersion,
          .metadata.selfLink,
          .metadata.uid,
          .spec.clusterIPs,
          .spec.volumeName,
          .status
      )' > $curns/$name.$type.yaml

    done
  done
done

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