kubespray/roles/etcd/templates/systemd-etcd2.service.j2

[Unit]
Description=etcd2
Conflicts=etcd.service

[Service]
User=etcd
EnvironmentFile=/etc/etcd2-environment
{% if inventory_hostname in groups['etcd'] %}
ExecStart={{ bin_dir }}/etcd2
{% else %}
ExecStart={{ bin_dir }}/etcd2 -proxy on
{% endif %}
Restart=always
RestartSec=10s
LimitNOFILE=40000

[Install]
WantedBy=multi-user.target