Playbook updates for clustered etcd

- Add support to bin/cluster for specifying etcd hosts
  - defaults to 0, if no etcd hosts are selected, then configures embedded
    etcd
- Updates for the byo inventory file for etcd and master as node by default
- Consolidation of cluster logic more centrally into common playbook
- Added etcd config support to playbooks
- Restructured byo playbooks to leverage the common openshift-cluster playbook
- Added support to common master playbook to generate and apply external etcd
  client certs from the etcd ca
- start of refactor for better handling of master certs in a multi-master
  environment.
  - added the openshift_master_ca and openshift_master_certificates roles to
    manage master certs instead of generating them in the openshift_master
    role
- added etcd host groups to the cluster update playbooks
- aded better handling of host groups when they are either not present or are
  empty.
- Update AWS readme

2 files changed, 8 insertions, 2 deletions

diff --git a/roles/openshift_node/tasks/main.yml b/roles/openshift_node/tasks/main.yml
index 53b325e4d..e18846db8 100644
--- a/roles/openshift_node/tasks/main.yml
+++ b/roles/openshift_node/tasks/main.yml
@@ -1,5 +1,11 @@
 ---
 # TODO: allow for overriding default ports where possible
+- fail:
+    msg: This role requres that osn_cluster_dns_domain is set
+  when: osn_cluster_dns_domain is not defined or not osn_cluster_dns_domain
+- fail:
+    msg: This role requres that osn_cluster_dns_ip is set
+  when: osn_cluster_dns_ip is not defined or not osn_cluster_dns_ip
 
 - name: Install OpenShift Node package
   yum: pkg=openshift-node state=present
diff --git a/roles/openshift_node/templates/node.yaml.v1.j2 b/roles/openshift_node/templates/node.yaml.v1.j2
index f313f6a4b..7778a2a61 100644
--- a/roles/openshift_node/templates/node.yaml.v1.j2
+++ b/roles/openshift_node/templates/node.yaml.v1.j2
@@ -1,7 +1,7 @@
 allowDisabledDocker: false
 apiVersion: v1
-dnsDomain: {{ hostvars[openshift_first_master].openshift.dns.domain }}
-dnsIP: {{ hostvars[openshift_first_master].openshift.dns.ip }}
+dnsDomain: {{ osn_cluster_dns_domain }}
+dnsIP: {{ osn_cluster_dns_ip }}
 dockerConfig:
   execHandlerName: ""
 imageConfig: