Comment 3 for bug 2003811

Sounds like you're using undercloud local registry. Can you check if you've the image there tagged appropiately i.e docker://172.25.201.68:8787/tripleomaster/openstack-etcd:current-tripleo ?

I suspect the image won't be there. I notice that https://github.com/openstack/tripleo-heat-templates/blob/master/roles/DistributedComputeHCI.yaml role does not have OS::TripleO::Services::ContainerImagePrepare so the etcd container image required OS::TripleO::Services::CinderVolumeEdge won't be available. Looks like a bug.

You can add OS::TripleO::Services::ContainerImagePrepare to
distributed-roles-data.yaml (your copy of tripleo-heat-templates/roles/DistributedComputeHCI.yaml) and re-deploy the edge stack.