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Backup and Restore of Bootstrap Node

This article describes the backup and restore of the kind cluster in the bootstrap node.

Backup Overview

Installer v0.16.0 supports backup and restore of the kind cluster in the bootstrap node. Currently, the following information is backed up:

  1. Two important files: clusterConfig.yaml, manifest.yaml

    The information in clusterConfig.yaml and manifest.yaml is stored in the configmap of the kind cluster.

    root@my-cluster-installer-control-plane:/# kubectl get -n default cm
NAME                       DATA   AGE
clusterconfig-1710711049   1      4h46m
kube-root-ca.crt           1      4h46m
manifest-1710711049        1      4h46m

  2. All data of the kind cluster

    The data of the kind cluster is mounted on the host machine at /home/kind, and the data of etcd is mounted at /home/kind/etcd. Do not delete any files in this directory.

    Note

    The mount directory can be defined in clusterConfig.yaml with spec.tinderKind.resourcesMountPath, and the default is /home/kind.

Restore

Since the above backup is enabled by default for users, in case the kind cluster is accidentally deleted or lost, you can run the installer command:

./offline/dce5-installer cluster-create -c ./offline/sample/clusterConfig.yaml -m ./offline/manifest.yaml -j1,2

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