The etcd role is run on all the servers

cluster.yml

@@ -4,12 +4,9 @@
   roles:
     - { role: download, tags: download }
 
-- hosts: etcd
-  roles:
-    - { role: etcd, tags: etcd }
-
 - hosts: k8s-cluster
   roles:
+    - { role: etcd, tags: etcd }
     - { role: docker, tags: docker }
     - { role: dnsmasq, tags: dnsmasq }
     - { role: network_plugin, tags: ['calico', 'flannel', 'network'] }