Created attachment 1425714 [details]
The output from the playbook run.

Description of problem:

Version-Release number of the following components:
rpm -q openshift-ansible
   package openshift-ansible is not installed
rpm -q ansible
   ansible-2.4.3.0-1.el7ae.noarch
ansible --version
   ansible 2.4.3.0
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.5 (default, Feb 20 2018, 09:19:12) [GCC 4.8.5 20150623 (Red Hat 4.8.5-28)]
openshift version
   openshift v3.10.0-0.22.0
   kubernetes v1.10.0+b81c8f8
   etcd 3.2.16


How reproducible:
Always
Steps to Reproduce:
1. Install an OCP cluster with 1 master, 1 infra and two compute nodes
2. Install grafana by using the playbook in openshift-ansible
    ansible-playbook -i inventory openshift-ansible/playbooks/openshift-grafana/config.yml
3. Note the result

Actual results:
   The playbook error's out in the add database step with the following error
   atal: [ip-172-31-39-238.us-west-2.compute.internal]: FAILED! => {"changed": false, "msg": "Failed to validate the SSL certificate for grafana-openshift-grafana.router.default.svc.cluster.local:443. Make sure your managed systems have a valid CA certificate installed. You can use validate_certs=False if you do not need to confirm the servers identity but this is unsafe and not recommended. Paths checked for this platform: /etc/ssl/certs, /etc/pki/ca-trust/extracted/pem, /etc/pki/tls/certs, /usr/share/ca-certificates/cacert.org, /etc/ansible. The exception msg was: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)."}
        to retry, use: --limit @/root/openshift-ansible/playbooks/openshift-grafana/config.retry


Expected results:
    playbook runs successfully without any error.

Additional info:
   ansible output and the inventory attached.