HAProxy Kubernetes

haproxy.cfg

# file: /etc/haproxy/haproxy.cfg
...
# HA K8s
frontend kubernetes
  bind *:6443
  option tcplog
  mode tcp
  default_backend kubernetes-master-nodes

backend kubernetes-master-nodes
  option httpchk GET /healthz
  http-check expect status 200
  mode tcp
  option ssl-hello-chk
  balance roundrobin
    server master1 123.456.789:6443 check
    server master2 123.456.789:6443 check
    server master3 123.456.789:6443 check
# END HA K8s

# HTTP(S)
frontend http
  bind *:80
  mode tcp
  option tcplog
  default_backend http

frontend https
  bind *:443
  mode tcp
  option tcplog
  default_backend https

backend http
  mode tcp
  balance roundrobin
    server master1 123.456.789:80 check send-proxy-v2 
    server master2 123.456.789:80 check send-proxy-v2
    server master3 123.456.789:80 check send-proxy-v2

backend https
  mode tcp
  option ssl-hello-chk
  balance roundrobin
    server master1 123.456.789:443 check send-proxy-v2
    server master2 123.456.789:443 check send-proxy-v2
    server master3 123.456.789:443 check send-proxy-v2
# End HTTP(S)