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

1 files changed, 3 insertions, 0 deletions

diff --git a/bin/cluster b/bin/cluster
index 0d760c342..746c0349a 100755
--- a/bin/cluster
+++ b/bin/cluster
@@ -51,6 +51,7 @@ class Cluster(object):
 
         env['num_masters'] = args.masters
         env['num_nodes'] = args.nodes
+        env['num_etcd'] = args.etcd
 
         return self.action(args, inventory, env, playbook)
 
@@ -261,6 +262,8 @@ if __name__ == '__main__':
                                help='number of masters to create in cluster')
     create_parser.add_argument('-n', '--nodes', default=2, type=int,
                                help='number of nodes to create in cluster')
+    create_parser.add_argument('-e', '--etcd', default=0, type=int,
+                               help='number of external etcd hosts to create in cluster')
     create_parser.set_defaults(func=cluster.create)
 
     config_parser = action_parser.add_parser('config',