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If you are using an S3-Compatible storage provider that is secured with a self-signed certificate, connections to the object store may fail with a
certificate signed by unknown authority message.
To proceed, provide a certificate bundle when adding the storage provider.
When using the
velero install command, you can use the
--cacert flag to provide a path
to a PEM-encoded certificate bundle to trust.
velero install \ --plugins <PLUGIN_CONTAINER_IMAGE [PLUGIN_CONTAINER_IMAGE]> --provider <YOUR_PROVIDER> \ --bucket <YOUR_BUCKET> \ --secret-file <PATH_TO_FILE> \ --cacert <PATH_TO_CA_BUNDLE>
Velero will then automatically use the provided CA bundle to verify TLS connections to that storage provider when backing up and restoring.
To use the describe, download, or logs commands to access a backup or restore contained
in storage secured by a self-signed certificate as in the above example, you must use
--cacert flag to provide a path to the certificate to be trusted.
velero backup describe my-backup --cacert <PATH_TO_CA_BUNDLE>
In case you are using a custom S3-compatible server, you may encounter that the backup fails with an error similar to one below.
rpc error: code = Unknown desc = RequestError: send request failed caused by: Get https://minio.com:3000/k8s-backup-bucket?delimiter=%2F&list-type=2&prefix=: remote error: tls: alert(116)
Error 116 represents certificate required as seen here in error codes. Velero as a client does not include its certificate while performing SSL handshake with the server. From TLS 1.3 spec, verifying client certificate is optional on the server. You will need to change this setting on the server to make it work.