etcd can run on a distinct cluster

README.md

@@ -32,6 +32,10 @@ Edit the inventory according to the number of servers
 [kube-master]
 10.115.99.31
 
+[etcd]
+10.115.99.31
+10.115.99.32
+
 [kube-node]
 10.115.99.32
 10.115.99.33
@@ -76,6 +80,10 @@ In node-mesh mode the nodes peers with all the nodes in order to exchange routes
 10.99.0.26
 10.99.0.59
 
+[etcd]
+10.99.0.26
+10.99.0.59
+
 [kube-node]
 10.99.0.59
 10.99.0.4
@@ -115,7 +123,7 @@ loadbalancer_address="10.99.0.44"
     - { role: download, tags: download }
 
 # etcd must be running on master(s) before going on
-- hosts: kube-master
+- hosts: etcd
   roles:
     - { role: etcd, tags: etcd }
 

cluster.yml

@@ -5,7 +5,7 @@
     - { role: download, tags: download }
 
 # etcd must be running on master(s) before going on
-- hosts: kube-master
+- hosts: etcd
   roles:
     - { role: etcd, tags: etcd }
 

roles/kubernetes/master/templates/manifests/kube-apiserver.manifest.j2

@@ -11,7 +11,8 @@ spec:
     - /hyperkube
     - apiserver
     - --insecure-bind-address=0.0.0.0
-    - --etcd-servers=http://{{ hostvars[inventory_hostname]['ip'] | default( ansible_default_ipv4.address) }}:2379
+    - --etcd-servers={% for srv in groups['etcd'] %}http://{{ srv }}:2379{% if not loop.last %},{% endif %}{% endfor %}
+
     - --admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota
     - --service-cluster-ip-range={{ kube_service_addresses }}
     - --client-ca-file={{ kube_cert_dir }}/ca.pem

roles/kubernetes/master/templates/manifests/kube-podmaster.manifest.j2

@@ -10,7 +10,8 @@ spec:
     image: gcr.io/google_containers/podmaster:1.1
     command:
     - /podmaster
-    - --etcd-servers=http://127.0.0.1:2379
+    - --etcd-servers={% for srv in groups['etcd'] %}http://{{ srv }}:2379{% if not loop.last %},{% endif %}{% endfor %}
+
     - --key=scheduler
     - --source-file={{ kube_config_dir}}/kube-scheduler.manifest
     - --dest-file={{ kube_manifest_dir }}/kube-scheduler.manifest
@@ -24,7 +25,8 @@ spec:
     image: gcr.io/google_containers/podmaster:1.1
     command:
     - /podmaster
-    - --etcd-servers=http://127.0.0.1:2379
+    - --etcd-servers={% for srv in groups['etcd'] %}http://{{ srv }}:2379{% if not loop.last %},{% endif %}{% endfor %}
+
     - --key=controller
     - --source-file={{ kube_config_dir }}/kube-controller-manager.manifest
     - --dest-file={{ kube_manifest_dir }}/kube-controller-manager.manifest