config.yml

apiVersion: v1
kind: ConfigMap
metadata:
  name: haproxy-config
data:
  haproxy.cfg: |
    global
      log stdout format raw local0

    defaults
      log     global
      option  httplog
      option  dontlognull
      timeout connect 5000ms
      timeout client  50000ms
      timeout server  50000ms

    frontend http_front
      bind *:80
      default_backend http_back

    backend http_back
      balance uri

      http-response set-header X-HAProxy-Hostname %[env(HOSTNAME)]

      hash-type consistent

      # Prevent Hotspots with consistent hashing
      # <factor> is a percentage greater than 100. For example, if <factor> is 150,
      # then no server will be allowed to have a load more than 1.5 times the average.
      # If server weights are used, they will be respected.
      
      hash-balance-factor 150

      mode http

      server nginx-0 nginx-0.nginx-service.default.svc.cluster.local:80 check
      server nginx-1 nginx-1.nginx-service.default.svc.cluster.local:80 check
      server nginx-2 nginx-2.nginx-service.default.svc.cluster.local:80 check
      server nginx-3 nginx-3.nginx-service.default.svc.cluster.local:80 check
      server nginx-4 nginx-4.nginx-service.default.svc.cluster.local:80 check

      option httpchk GET /health