# haproxy for SUNET frontend load balancer nodes.
#
{% from "common/haproxy_macros.j2" import output_backends %}

{% block global %}
global
    log /dev/log local0

    daemon
    maxconn 256
    stats socket /var/run/haproxy-control/stats mode 600
    #server-state-file /tmp/server_state

    user haproxy
    group haproxy

    # Default SSL material locations
    ca-base /etc/ssl/certs
    crt-base /etc/ssl/private

    ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS
    ssl-default-bind-options no-sslv3
    tune.ssl.default-dh-param 2048

    spread-checks 20
{% endblock global %}


{% block defaults %}
defaults
    log global
    mode http
    option httplog
    option dontlognull
    option redispatch
    option forwardfor
    # funny looking values because recommendation is to have these slightly
    # above mulitples of three seconds to play nice with TCP resend timers
    timeout check 5s
    timeout connect 4s
    timeout client 17s
    timeout server 17s
    timeout http-request 5s
    balance roundrobin
{% endblock defaults %}

{% block stats %}
frontend LB-http
    # expose stats info over HTTP to exabgp
    bind 127.0.0.1:9000
    http-request set-log-level silent
    default_backend LB

backend LB
    stats enable
    #stats hide-version
    stats uri /haproxy_stats
{% endblock stats %}


{% block global_backends %}
{% if letsencrypt_server is defined %}
backend letsencrypt_{{ letsencrypt_server }}
  server letsencrypt_{{ letsencrypt_server }} {{ letsencrypt_server }}:81
{% else %}
# letsencrypt_server not defined
{% endif %}
{% endblock global_backends %}


{% block https_everything %}
#
# Redirect _everything_ to HTTPS
frontend http-frontend
    bind 0.0.0.0:80
    bind :::80

    redirect scheme https code 301 if !{ ssl_fc } ! { path_beg /.well-known/acme-challenge/ }
{% if letsencrypt_server is defined %}
    use_backend letsencrypt_{{ letsencrypt_server }} if { path_beg /.well-known/acme-challenge/ }
{% else %}
    # letsencrypt_server not defined
{% endif %}
{% endblock https_everything %}

#
# Frontend section
#
{% block frontend %}
{% endblock frontend %}


#
# Backend section
#
{% block pre_backend %}
{% endblock pre_backend %}

{% block backend %}
{{ output_backends(backends, config=['cookie SERVERID insert indirect nocache']) }}

backend failpage
  server failpage 0.0.0.0:82 backup
{% endblock backend %}