kubespray/roles/etcd/templates/etcd.j2

ETCD_DATA_DIR="/var/lib/etcd"
{% if inventory_hostname in groups['etcd'] %}
{% set etcd = {} %}
{%     for host in groups['etcd'] %}
{%         if inventory_hostname == host %}
{%             set _dummy = etcd.update({'name':"etcd"+loop.index|string}) %}
{%         endif %}
{%     endfor %}
ETCD_ADVERTISE_CLIENT_URLS="http://{{ hostvars[inventory_hostname]['access_ip'] | default(hostvars[inventory_hostname]['ip'] | default( ansible_default_ipv4.address)) }}:2379"
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://{{ hostvars[inventory_hostname]['access_ip'] | default(hostvars[inventory_hostname]['ip'] | default( ansible_default_ipv4.address))  }}:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="k8s_etcd"
ETCD_LISTEN_PEER_URLS="http://{{ hostvars[inventory_hostname]['ip'] | default( ansible_default_ipv4.address)  }}:2380"
ETCD_NAME="{{ etcd.name }}"
{% endif %}
ETCD_INITIAL_CLUSTER="{% for host in groups['etcd'] %}etcd{{ loop.index|string }}=http://{{ hostvars[host]['access_ip'] | default(hostvars[host]['ip'] | default(hostvars[host]['ansible_default_ipv4']['address'])) }}:2380{% if not loop.last %},{% endif %}{% endfor %}"
ETCD_LISTEN_CLIENT_URLS="http://{{ hostvars[inventory_hostname]['ip'] | default( ansible_default_ipv4.address)  }}:2379,http://127.0.0.1:2379"