update

kubespray/roles/kubernetes/node/templates/loadbalancer/haproxy.cfg.j2

@@ -0,0 +1,43 @@
+global
+    maxconn                 4000
+    log                     127.0.0.1 local0
+
+defaults
+    mode                    http
+    log                     global
+    option                  httplog
+    option                  dontlognull
+    option                  http-server-close
+    option                  redispatch
+    retries                 5
+    timeout http-request    5m
+    timeout queue           5m
+    timeout connect         30s
+    timeout client          {{ loadbalancer_apiserver_keepalive_timeout }}
+    timeout server          15m
+    timeout http-keep-alive 30s
+    timeout check           30s
+    maxconn                 4000
+
+{% if loadbalancer_apiserver_healthcheck_port is defined -%}
+frontend healthz
+  bind *:{{ loadbalancer_apiserver_healthcheck_port }}
+  mode http
+  monitor-uri /healthz
+{% endif %}
+
+frontend kube_api_frontend
+  bind 127.0.0.1:{{ loadbalancer_apiserver_port|default(kube_apiserver_port) }}
+  mode tcp
+  option tcplog
+  default_backend kube_api_backend
+
+backend kube_api_backend
+  mode tcp
+  balance leastconn
+  default-server inter 15s downinter 15s rise 2 fall 2 slowstart 60s maxconn 1000 maxqueue 256 weight 100
+  option httpchk GET /healthz
+  http-check expect status 200
+  {% for host in groups['kube_control_plane'] -%}
+  server {{ host }} {{ hostvars[host]['access_ip'] | default(hostvars[host]['ip'] | default(fallback_ips[host])) }}:{{ kube_apiserver_port }} check check-ssl verify none
+  {% endfor -%}