Update snapshot-backup.md

Signed-off-by: Sheng Yang <sheng.yang@rancher.com>
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Sheng Yang 2019-10-14 13:38:35 -07:00 committed by GitHub
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@ -113,6 +113,9 @@ data:
AWS_SECRET_ACCESS_KEY: bG9uZ2hvcm4tdGVzdC1zZWNyZXQta2V5 # longhorn-test-secret-key
AWS_ENDPOINTS: aHR0cDovL21pbmlvLXNlcnZpY2UuZGVmYXVsdDo5MDAw # http://minio-service.default:9000
```
Please follow [the Kubernetes document](https://kubernetes.io/docs/concepts/configuration/secret/#creating-a-secret-manually) to create the secret.
* Make sure to use `echo -n` when generating the base64 encoding, otherwise an new line will be added at the end of the string and it will cause error when accessing the S3.
Notice the secret must be created in the `longhorn-system` namespace for Longhorn to access.