You will of course need to run ssh-copy-id root@hostname for each machine you want to connect to prior to running this script   #!/bin/bash # declare an array called array and define 3 vales osdirs=( “/etc/nova” “/etc/neutron” “/etc/cinder” “/etc/glance” “/etc/keystone” “/etc/httpd” ) servers=(“vm-os-ks01” “vm-os-glance01” “vm-os-dash01” “vm-os-net01” “vm-os-net02” “vm-os-cinder01” “vm-os-radosgw01” ) for s in “${servers[@]}” do […]