[...] > I want to learn ceph, and i am really having no knowledge on ceph. > > I decided to follow the official doc on ceph.com site. > It is said to use ceph-deploy which is not working. You could do like I did; start gathering some Ceph know-how by targeting 3 x86_64 VMs running Fedora29, CentOS7 or RHEL7. Once you are comfortable using ceph-ansible against these, try again with your raspberry3B+ machines. pcfe _______________________________________________ arm mailing list -- arm@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to arm-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/arm@xxxxxxxxxxxxxxxxxxxxxxx