Description of problem:
==============================

While installing CNS 3.10 on an already installed OCP 3.10.34 setup, the CNS install is failing on following two tasks.


TASK [openshift_node : Install GlusterFS storage plugin dependencies]
msg": "The conditional check 'not openshift_is_atomic | bool' failed. The error was: error while evaluating conditional (not openshift_is_atomic | bool):

TASK [openshift_storage_glusterfs : Ensure device mapper modules loaded]
"msg": "The conditional check 'inventory_hostname not in groups['glusterfs_registry']' failed


Version-Release number of the following components:
================================================

The GA'd version of OCP was used.


# rpm -qa|grep ansible
openshift-ansible-docs-3.10.34-1.git.0.48df172None.noarch
openshift-ansible-playbooks-3.10.34-1.git.0.48df172None.noarch
openshift-ansible-3.10.34-1.git.0.48df172None.noarch
ansible-2.4.6.0-1.el7ae.noarch
openshift-ansible-roles-3.10.34-1.git.0.48df172None.noarch


oc version
--------------
# oc version
oc v3.10.34
kubernetes v1.10.0+b81c8f8


# rpm -qa|grep openshift
openshift-ansible-docs-3.10.34-1.git.0.48df172None.noarch
atomic-openshift-docker-excluder-3.10.34-1.git.0.4a94911.el7.noarch
atomic-openshift-clients-3.10.34-1.git.0.4a94911.el7.x86_64
openshift-ansible-playbooks-3.10.34-1.git.0.48df172None.noarch
openshift-ansible-3.10.34-1.git.0.48df172None.noarch
atomic-openshift-excluder-3.10.34-1.git.0.4a94911.el7.noarch
atomic-openshift-3.10.34-1.git.0.4a94911.el7.x86_64
atomic-openshift-hyperkube-3.10.34-1.git.0.4a94911.el7.x86_64
openshift-ansible-roles-3.10.34-1.git.0.48df172None.noarch
atomic-openshift-node-3.10.34-1.git.0.4a94911.el7.x86_64




How reproducible:
===========================
100% on 2-3 different setups where OCP3/10.34 was already pre-installed

Steps to Reproduce:
========================
1. Deploy OCP with there extra node(for CNS)
 ansible-playbook -vvv /usr/share/ansible/openshift-ansible/playbooks/deploy_cluster.yml 

2. Defined glusterfs group in inventory file, execute CNS standalone deployment playbook.
 ansible-playbook -vvv /usr/share/ansible/openshift-ansible/playbooks/openshift-glusterfs/config.yml

3. Check the status of installation

Actual results:
===================

1. The failed tasks - TASK#1
==============================

2018-09-02 17:47:12,103 p=27009 u=root |  TASK [openshift_node : Install GlusterFS storage plugin dependencies] ***********************************
2018-09-02 17:47:12,103 p=27009 u=root |  task path: /usr/share/ansible/openshift-ansible/roles/openshift_node/tasks/glusterfs.yml:2
2018-09-02 17:47:12,156 p=27009 u=root |  Using module file /usr/lib/python2.7/site-packages/ansible/modules/packaging/os/yum.py
2018-09-02 17:47:12,173 p=27009 u=root |  Using module file /usr/lib/python2.7/site-packages/ansible/modules/packaging/os/yum.py
2018-09-02 17:47:12,191 p=27009 u=root |  Using module file /usr/lib/python2.7/site-packages/ansible/modules/packaging/os/yum.py
2018-09-02 17:47:12,214 p=27009 u=root |  Using module file /usr/lib/python2.7/site-packages/ansible/modules/packaging/os/yum.py
2018-09-02 17:47:12,273 p=27009 u=root |  fatal: [dhcp46-150.lab.eng.blr.redhat.com]: FAILED! => {
    "failed": true,
    "msg": "The conditional check 'not openshift_is_atomic | bool' failed. The error was: error while evaluating conditional (not openshift_is_atomic | bool): 'openshift_is_atomic' is undefined\n\nThe error appears to have been in '/usr/share/ansible/openshift-ansible/roles/openshift_node/tasks/glusterfs.yml': line 2, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n---\n- name: Install GlusterFS storage plugin dependencies\n  ^ here\n"
}
2018-09-02 17:47:12,294 p=27009 u=root |  fatal: [dhcp46-219.lab.eng.blr.redhat.com]: FAILED! => {
    "failed": true,
    "msg": "The conditional check 'not openshift_is_atomic | bool' failed. The error was: error while evaluating conditional (not openshift_is_atomic | bool): 'openshift_is_atomic' is undefined\n\nThe error appears to have been in '/usr/share/ansible/openshift-ansible/roles/openshift_node/tasks/glusterfs.yml': line 2, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n---\n- name: Install GlusterFS storage plugin dependencies\n  ^ here\n"
}
2018-09-02 17:47:12,318 p=27009 u=root |  fatal: [dhcp46-231.lab.eng.blr.redhat.com]: FAILED! => {
    "failed": true,
    "msg": "The conditional check 'not openshift_is_atomic | bool' failed. The error was: error while evaluating conditional (not openshift_is_atomic | bool): 'openshift_is_atomic' is undefined\n\nThe error appears to have been in '/usr/share/ansible/openshift-ansible/roles/openshift_node/tasks/glusterfs.yml': line 2, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n---\n- name: Install GlusterFS storage plugin dependencies\n  ^ here\n"
}
2018-09-02 17:47:12,344 p=27009 u=root |  fatal: [dhcp46-181.lab.eng.blr.redhat.com]: FAILED! => {


2. The Failed task - TASK#2
==============================

2018-09-02 17:47:34,371 p=27009 u=root |  TASK [openshift_storage_glusterfs : Ensure device mapper modules loaded] ********************************
2018-09-02 17:47:34,371 p=27009 u=root |  task path: /usr/share/ansible/openshift-ansible/roles/openshift_storage_glusterfs/tasks/kernel_modules.yml:2
2018-09-02 17:47:34,418 p=27009 u=root |  fatal: [dhcp46-137.lab.eng.blr.redhat.com]: FAILED! => {
    "failed": true,
    "msg": "The conditional check 'inventory_hostname not in groups['glusterfs_registry']' failed. The error was: error while evaluating conditional (inventory_hostname not in groups['glusterfs_registry']): Unable to look up a name or access an attribute in template string ({% if inventory_hostname not in groups['glusterfs_registry'] %} True {% else %} False {% endif %}).\nMake sure your variable name does not contain invalid characters like '-': argument of type 'StrictUndefined' is not iterable\n\nThe error appears to have been in '/usr/share/ansible/openshift-ansible/roles/openshift_storage_glusterfs/tasks/kernel_modules.yml': line 2, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n---\n- name: Ensure device mapper modules loaded\n  ^ here\n"
}
2018-09-02 17:47:34,438 p=27009 u=root |  skipping: [dhcp46-55.lab.eng.blr.redhat.com] => {
    "changed": false,
    "skip_reason": "Conditional result was False",
    "skipped": true
}
2018-09-02 17:47:34,439 p=27009 u=root |  skipping: [dhcp46-95.lab.eng.blr.redhat.com] => {
    "changed": false,
    "skip_reason": "Conditional result was False",
    "skipped": true
}
2018-09-02 17:47:34,454 p=27009 u=root |  skipping: [dhcp47-106.lab.eng.blr.redhat.com] => {
    "changed": false,
    "skip_reason": "Conditional result was False",
    "skipped": true
}