[Server] Resolving Velero Installation Error: Unknown Flag --use-restic

Overview

When installing Velero using old CircleCI documentation, users may encounter an error message: An error occurred: unknown flag: --use-restic. This issue arises because the --use-restic flag has been replaced by --use-node-agent starting from Velero version 1.10. This article provides guidance on resolving this error by following the updated installation instructions.

Prerequisites

• Ensure you have access to your Kubernetes cluster
• Verify the version of Velero you are using to ensure compatibility with the updated flags.

Solution

1. Check Velero Version: Confirm the version of Velero you are using. If it is version 1.10 or later, the --use-restic flag is no longer valid.

2. Follow Updated Documentation: Refer to the latest Velero installation guides for comprehensive instructions:

   • https://github.com/vmware-tanzu/velero-plugin-for-aws#setup
   • https://github.com/vmware-tanzu/velero-plugin-for-gcp#overview

3. Update Installation Command: Instead of using the --use-restic use --use-node-agent in your installation command. Here is a sample of the command:

   velero install \ 
     --provider aws \ 
     --plugins velero/velero-plugin-for-aws:v1.8.2 \
     --bucket circleci-server-velero-backup-bucket \
     --secret-file ./cred/credentials-velero \
     --backup-location-config region=ap-northeast-1 \
     --snapshot-location-config region=ap-northeast-1 \
     --use-node-agent

Additional Resources

• CircleCI Backup and Restore Documentation
• Velero Release Notes