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const frontMatter = {
title: 'Migrating Rancher to a New Cluster'
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"description": "If you are migrating Rancher to a new Kubernetes cluster, you don't need to install Rancher on the new cluster first. If Rancher is restored to a new cluster with Rancher already installed, it can cause problems.",
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{
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"href": "/v2.5/how-to-guides/new-user-guides/backup-restore-and-disaster-recovery/back-up-rancher"
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}, `only`), ` migrates Rancher-related resources and won't affect other applications on the cluster. Refer to the `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("a", {
parentName: "p",
"href": "https://www.suse.com/lifecycle/"
}, `support matrix`), ` to identify which Kubernetes cluster types and versions are supported for your Rancher version.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("h3", {
"id": "1-install-the-rancher-backup-helm-chart"
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parentName: "pre"
}, `helm repo add rancher-charts https://charts.rancher.io
helm repo update
helm install rancher-backup-crd rancher-charts/rancher-backup-crd -n cattle-resources-system --create-namespace --version $CHART_VERSION
helm install rancher-backup rancher-charts/rancher-backup -n cattle-resources-system --version $CHART_VERSION
`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("br", null), "For an **air-gapped environment**, use the option below to pull the `backup-restore-operator` image from your private registry when installing the rancher-backup-crd Helm chart. ``` --set image.repository $REGISTRY/rancher/backup-restore-operator ```", /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("h3", {
"id": "2-restore-from-backup-using-a-restore-custom-resource"
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}, `accessKey`), ` and `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
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}, `secretKey`), ` containing the s3 credentials like this:`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("pre", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("code", {
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}, `apiVersion: v1
kind: Secret
metadata:
name: s3-creds
type: Opaque
stringData:
accessKey: <Enter your base64-encoded access key>
secretKey: <Enter your base64-encoded secret key>
`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `This secret can be created in any namespace, with the above example it will get created in the default namespace`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `In the Restore custom resource, `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `prune`), ` must be set to false.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `Create a Restore custom resource like the example below:`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("pre", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("code", {
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"className": "language-yaml"
}, `# migrationResource.yaml
apiVersion: resources.cattle.io/v1
kind: Restore
metadata:
name: restore-migration
spec:
backupFilename: backup-b0450532-cee1-4aa1-a881-f5f48a007b1c-2020-09-15T07-27-09Z.tar.gz
prune: false
encryptionConfigSecretName: encryptionconfig
storageLocation:
s3:
credentialSecretName: s3-creds
credentialSecretNamespace: default
bucketName: backup-test
folder: ecm1
region: us-west-2
endpoint: s3.us-west-2.amazonaws.com
`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("blockquote", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", {
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}, `encryptionConfigSecretName`), ` must be set only if your backup was created with encryption enabled. Provide the name of the Secret containing the encryption config file. If you only have the encryption config file, but don't have a secret created with it in this cluster, use the following steps to create the secret:`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("ol", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
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}, `encryption-provider-config.yaml`), `, and the `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
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}, `--from-file`), ` flag must be used to create this secret. So save your `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
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}, `EncryptionConfiguration`), ` in a file called `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
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parentName: "li"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("code", {
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}, `kubectl create secret generic encryptionconfig \\
--from-file=./encryption-provider-config.yaml \\
-n cattle-resources-system
`))), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
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}, `install cert-manager`), ` in the documentation about installing cert-manager on Kubernetes.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("h3", {
"id": "4-bring-up-rancher-with-helm"
}, `4. Bring up Rancher with Helm`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `Use the same version of Helm to install Rancher, that was used on the first cluster.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("pre", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("code", {
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}, `helm install rancher rancher-latest/rancher \\
--namespace cattle-system \\
--set hostname=<same hostname as the server URL from the first Rancher server> \\
`)));
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}]);
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