Describe the issue:

Since there is no ceph_docker_image_tag at the all.yml example, the ceph-ansible uses the default which is;

roles/ceph-defaults/defaults/main.yml:ceph_docker_image_tag: latest-nautilus

But there is no such a tag and installation fails. 


Describe the task you were trying to accomplish:

Suggestions for improvement:
The following entry should be added to the all.yml:

ceph_docker_image_tag: latest



Document URL:
https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/4/html-single/installation_guide/index#installing-a-red-hat-ceph-storage-cluster_install
Chapter/Section Number and Title:

5 - iii , Containers example of the all.yml file: 
Product Version:
4.2
Environment Details:

Any other versions of this document that also needs this update:

Additional information: