change the way that getting etcd_member_name

README.md

@@ -22,7 +22,7 @@ To deploy the cluster you can use :
     sudo pip install -r requirements.txt
 
     # Copy ``inventory/sample`` as ``inventory/mycluster``
-    cp -rfp inventory/sample inventory/mycluster
+    cp -rfp inventory/sample/* inventory/mycluster
 
     # Update Ansible inventory file with inventory builder
     declare -a IPS=(10.10.1.3 10.10.1.4 10.10.1.5)

inventory/sample/hosts.ini

 # ## Configure 'ip' variable to bind kubernetes services on a
 # ## different ip than the default iface
-# node1 ansible_host=95.54.0.12  # ip=10.3.0.1
-# node2 ansible_host=95.54.0.13  # ip=10.3.0.2
-# node3 ansible_host=95.54.0.14  # ip=10.3.0.3
-# node4 ansible_host=95.54.0.15  # ip=10.3.0.4
-# node5 ansible_host=95.54.0.16  # ip=10.3.0.5
-# node6 ansible_host=95.54.0.17  # ip=10.3.0.6
+# ## We should set etcd_member_name for etcd cluster. The node that is not a etcd member do not need to set the value, or can set the empty string value.
+# node1 ansible_host=95.54.0.12  # ip=10.3.0.1 etcd_member_name=etcd1
+# node2 ansible_host=95.54.0.13  # ip=10.3.0.2 etcd_member_name=etcd2
+# node3 ansible_host=95.54.0.14  # ip=10.3.0.3 etcd_member_name=etcd3
+# node4 ansible_host=95.54.0.15  # ip=10.3.0.4 etcd_member_name=etcd4
+# node5 ansible_host=95.54.0.16  # ip=10.3.0.5 etcd_member_name=etcd5
+# node6 ansible_host=95.54.0.17  # ip=10.3.0.6 etcd_member_name=etcd6
 
 # ## configure a bastion host if your nodes are not directly reachable
 # bastion ansible_host=x.x.x.x ansible_user=some_user

roles/kubespray-defaults/defaults/main.yaml

@@ -335,15 +335,16 @@ etcd_events_access_addresses: |-
   {% for item in groups['etcd'] -%}
     https://{{ hostvars[item]['access_ip'] | default(hostvars[item]['ip'] | default(hostvars[item]['ansible_default_ipv4']['address'])) }}:2381{% if not loop.last %},{% endif %}
   {%- endfor %}
+# user should set etcd_member_name in inventory/mycluster/hosts.ini
 etcd_member_name: |-
   {% for host in groups['etcd'] %}
-  {%   if inventory_hostname == host %}{{"etcd"+loop.index|string }}{% endif %}
+  {%   if inventory_hostname == host %}{{ hostvars[host].etcd_member_name }}{% endif %}
   {% endfor %}
 etcd_peer_addresses: |-
   {% for item in groups['etcd'] -%}
-    {{ "etcd"+loop.index|string }}=https://{{ hostvars[item].access_ip | default(hostvars[item].ip | default(hostvars[item].ansible_default_ipv4['address'])) }}:2380{% if not loop.last %},{% endif %}
+    {{ hostvars[item].etcd_member_name }}=https://{{ hostvars[item].access_ip | default(hostvars[item].ip | default(hostvars[item].ansible_default_ipv4['address'])) }}:2380{% if not loop.last %},{% endif %}
   {%- endfor %}
 etcd_events_peer_addresses: |-
   {% for item in groups['etcd'] -%}
-    {{ "etcd"+loop.index|string }}-events=https://{{ hostvars[item].access_ip | default(hostvars[item].ip | default(hostvars[item].ansible_default_ipv4['address'])) }}:2382{% if not loop.last %},{% endif %}
+    {{ hostvars[item].etcd_member_name }}-events=https://{{ hostvars[item].access_ip | default(hostvars[item].ip | default(hostvars[item].ansible_default_ipv4['address'])) }}:2382{% if not loop.last %},{% endif %}
   {%- endfor %}