Quickstart fails when overriding default 'stack' user. You cannot specify a non-root-user for VIRTHOST setup other than the default 'stack'. This is useful for dual setup on the same VIRTHOST using two different users (let's say foo and bar) with their respective isolated environments.
$ bash quickstart.sh --tags all -e ssh_user=fstack -e undercloud_user=fstack -e non_root_user=fstack -e remote_user=fstack 127.0.0.2
TASK [setup/undercloud : Copy instackenv.json to appliance] ******************************************************************************************
task path: /home/foo/.quickstart/tripleo-quickstart/roles/libvirt/setup/undercloud/tasks/main.yml:78
Friday 15 December 2017 12:32:11 -0500 (0:00:00.079) 0:05:00.900 *******
fatal: [127.0.0.2]: FAILED! => {"changed": true, "cmd": ["virt-customize", "-a", "/home/fstack/undercloud.qcow2", "--upload", "/home/fstack/instackenv.json:/home/fstack/instackenv.json", "--run-command", "chown fstack:fstack /home/fstack/instackenv.json"], "delta": "0:00:21.960042", "end": "2017-12-15 12:32:36.025620", "failed": true, "msg": "non-zero return code", "rc": 1, "start": "2017-12-15 12:32:14.065578", "stderr": "virt-customize: error: libguestfs error: upload: \n/home/fstack/instackenv.json: No such file or directory\n\nIf reporting bugs, run virt-customize with debugging enabled and include \nthe complete output:\n\n virt-customize -v -x [...]", "stderr_lines": ["virt-customize: error: libguestfs error: upload: ", "/home/fstack/instackenv.json: No such file or directory", "", "If reporting bugs, run virt-customize with debugging enabled and include ", "the complete output:", "", " virt-customize -v -x [...]"], "stdout": "[ 0.0] Examining the guest ...\n[ 21.9] Setting a random seed\n[ 21.9] Uploading: /home/fstack/instackenv.json to /home/fstack/instackenv.json", "stdout_lines": ["[ 0.0] Examining the guest ...", "[ 21.9] Setting a random seed", "[ 21.9] Uploading: /home/fstack/instackenv.json to /home/fstack/instackenv.json"]}
[stack@
stack test1 test2 whayutin │······
[stack@
BUG!