Merge "Add a active-standby mode memcached in haproxy"

ansible/roles/haproxy/templates/haproxy.cfg.j2

@@ -895,6 +895,19 @@ listen mariadb
 {% endfor %}
 {% endif %}
 
+{% if enable_memcached | bool %}
+listen memcached
+  mode tcp
+  timeout client 3600s
+  timeout server 3600s
+  option tcplog
+  option tcpka
+  bind {{ kolla_internal_vip_address }}:{{ memcached_port }}
+{% for host in groups['memcached'] %}
+  server {{ hostvars[host]['ansible_hostname'] }} {{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ memcached_port }} check inter 2000 rise 2 fall 5 {% if not loop.first %}backup{% endif %}
+{% endfor %}
+{% endif %}
+
 {% if enable_opendaylight | bool %}
 listen opendaylight_api
   bind {{ kolla_internal_vip_address }}:{{ opendaylight_haproxy_restconf_port }}