digging deeper
root@onenode-prg-03:~# telnet onenode-prg-01 6789
Trying 10.250.252.10...
telnet: Unable to connect to remote host: Connection refused
root@onenode-prg-03:~# telnet onenode-prg-01 3300
Trying 10.250.252.10...
telnet: Unable to connect to remote host: Connection refused
Here was the problem with networks: ceph uses 10.249.252.0 network. Ok, changed CEPH_HOST variable in datastore to IP addresses
root@onenode-prg-03:~# telnet 10.249.252.10 6789
Trying 10.249.252.10...
Connected to 10.249.252.10.
Escape character is '^]'.
ceph v027�
redeployed VM and finally
root@onenode-prg-03:~# virsh -c qemu:///system list --all
Id Name State
------------------------
4 one-39 running
this problem also related to VM creation failed. XPath empty - #3 by o.mbarek