Bug 1378755

Also reproducible with openshift-ansible-3.2.31-1.git.0.203df76.el7.noarch.rpm, clone it to 3.2.1 product

+++ This bug was initially created as a clone of Bug #1378337 +++

Description of problem:
When running a containerized ocp installation on RHEL-7.3, installer failed at
TASK [etcd : Check for etcd service presence] **********************************
Thursday 22 September 2016  03:10:34 +0000 (0:00:02.139)       0:08:27.900 **** 
fatal: [x.com]: FAILED! => {"changed": false, "cmd": ["systemctl", "show", "etcd.service"], "delta": "0:00:00.015749", "end": "2016-09-21 23:10:36.704930", "failed": true, "rc": 1, "start": "2016-09-21 23:10:36.689181", "stderr": "Unit etcd.service could not be found.", "stdout": "", "stdout_lines": [], "warnings": []}

On a clean RHEL-7.3, run "systemctl show etcd.service"
[root@gpei-test-2 ~]# systemctl show etcd.service
Unit etcd.service could not be found.
[root@gpei-test-2 ~]# echo $?
1
[root@gpei-test-2 yum.repos.d]# rpm -qf /usr/bin/systemctl
systemd-219-30.el7.x86_64


On a clean RHEL-7.2, run "systemctl show etcd.service"
[root@gpei-test ~]# systemctl show etcd.service
Restart=no
...
Names=etcd.service
Description=etcd.service
LoadState=not-found
...
LoadError=org.freedesktop.DBus.Error.FileNotFound "No such file or directory"
Transient=no
[root@gpei-test ~]# echo $?
0
[root@gpei-test ~]# rpm -qf /usr/bin/systemctl
systemd-219-19.el7_2.13.x86_64


Version-Release number of selected component (if applicable):
openshift-ansible-3.3.22-1.git.0.6c888c2.el7.noarch.rpm
systemd-219-30.el7.x86_64


How reproducible:
Always

Steps to Reproduce:
1. Run a containerized installation with standalone etcd host
2.
3.

Actual results:

Expected results:
Should no such error during installation

Additional info:

--- Additional comment from Gaoyun Pei on 2016-09-22 05:14:41 EDT ---

Checked on openshift-ansible code, found there's another such case in https://github.com/openshift/openshift-ansible/blob/master/roles/openshift_master/tasks/main.yml#L178

For a containerized ha-master installation, ansible would only create the ha systemd unit files: atomic-openshift-master-api.service and atomic-openshift-master-controllers.service, so it would also fail when run "systemctl show atomic-openshift-master.service".