You will get below error message when using the imgpkg copy to download the rabbitmq per the guide https://docs.vmware.com/en/Cluster-Essentials-for-VMware-Tanzu/1.10/cluster-essentials/deploy.html
MANIFEST_UNKNOWN:
The named manifest is not known to the registry.; map[manifest:sha256:887788e1ff359fe110e95f36455d4ebb6e5136bbd455d3756b4bfb4616fc1663]
This issue was caused by the environment was not set correct in the guide.
You should use the export command for each environment variable per below:
export MY_BROADCOM_SUPPORT_ACCESS_TOKEN=your_token
export IMGPKG_REGISTRY_HOSTNAME=cluster-essentials.packages.broadcom.com
export IMGPKG_REGISTRY_USERNAME=your_email_id
export IMGPKG_REGISTRY_PASSWORD=${MY_BROADCOM_SUPPORT_ACCESS_TOKEN}
imgpkg copy \
-b cluster-essentials.packages.broadcom.com/tanzu-cluster-essentials/cluster-essentials-bundle@sha256:887788e1ff359fe110e95f36455d4ebb6e5136bbd455d3756b4bfb4616fc1663 \
--to-tar cluster-essentials-bundle-1.10.1.tar \
--include-non-distributable-layers
It should be successful like this.