openstack-ansible-haproxy_server/templates/service.j2

# {{ ansible_managed }}

{% set request_option = service.haproxy_balance_type | default("http") -%}
{% if service.haproxy_backend_port is not defined %}
  {% set haproxy_backend_port = service.haproxy_port %}
{% else %}
  {% set haproxy_backend_port = service.haproxy_backend_port %}
{% endif -%}
{% if service.haproxy_check_port is not defined %}
  {% set haproxy_check_port = haproxy_backend_port %}
{% else %}
  {% set haproxy_check_port = service.haproxy_check_port %}
{% endif -%}

{% if service.haproxy_bind is defined %}
{%   set vip_binds = service.haproxy_bind %}
{% else %}
{%   set vip_binds = haproxy_tls_vip_binds + extra_lb_vip_addresses %}
{% endif %}

{% if not service.haproxy_backend_only | default(false) %}
{% for vip_bind in vip_binds %}
{%   if vip_bind is not string and vip_bind is mapping %}
{%     set vip_address = vip_bind['address'] %}
{%     set vip_interface = vip_bind['interface'] | default('') %}
{%   else %}
{%     set vip_address = vip_bind %}
{%     set vip_interface = '' %}
{%   endif %}
{% if service.haproxy_redirect_http_port is defined and service.haproxy_ssl %}
{% if (loop.index == 1 or service.haproxy_ssl_all_vips | default(false) | bool) %}

frontend {{ service.haproxy_service_name }}-redirect-front-{{ loop.index }}
bind {{ vip_address }}:{{ service.haproxy_redirect_http_port }}{{ (vip_interface is truthy) | ternary(' interface ' ~ vip_interface, '') }}
    mode http
    redirect scheme {{ service.haproxy_redirect_scheme  | default('https if !{ ssl_fc }') }}
{% if service.haproxy_frontend_acls is defined %}
{%   for key, value in service.haproxy_frontend_acls.items() %}
    acl {{ key }} {{ value.rule }}
    use_backend {{ value.backend_name | default(service.haproxy_service_name) }}-back if {{ key }}
{%   endfor %}
{% for entry in haproxy_frontend_redirect_extra_raw %}
    {{ entry }}
{% endfor %}
{% endif %}
{% endif %}
{% endif %}

{# TODO: remove if and section inside if after HTTPS upgrade #}
{# During an upgrade of internal frontends from HTTP to HTTPS, need to accept both HTTP and HTTPS until client config has been changed #}
{% if (service.haproxy_tcp_upgrade_frontend | default(false)) and (service.haproxy_ssl_all_vips | default(false)) %}
{% include 'service-redirect.j2' %}
{% else %}
frontend {{ service.haproxy_service_name }}-front-{{ loop.index }}
    bind {{ vip_address }}:{{ service.haproxy_port }}{{ (vip_interface is truthy) | ternary(' interface ' ~ vip_interface, '') }} {% if (service.haproxy_ssl | default(false) | bool) and (loop.index == 1 or vip_address in extra_lb_tls_vip_addresses or (service.haproxy_ssl_all_vips | default(false) | bool and vip_address not in extra_lb_vip_addresses)) %}ssl crt {{ haproxy_ssl_cert_path }}/haproxy_{{ haproxy_host | default(ansible_facts['hostname']) }}-{{ (vip_interface is truthy) | ternary(vip_address ~ '-' ~ vip_interface, vip_address) }}.pem {% endif %}

{% if request_option == "http" %}
    option httplog
    option forwardfor except 127.0.0.0/8
{% if service.haproxy_http_keepalive_mode is defined %}
    option {{ service.haproxy_http_keepalive_mode }}
{% endif %}
{% elif request_option == "tcp" %}
    option tcplog
{% endif %}
{% if service.haproxy_timeout_client is defined %}
    timeout client {{ service.haproxy_timeout_client }}
{% endif %}
{% if service.haproxy_allowlist_networks is defined %}
    acl allow_list src 127.0.0.1/8 {{ service.haproxy_allowlist_networks | join(' ') }}
    tcp-request content accept if allow_list
    tcp-request content reject
{% endif %}
{% if service.haproxy_acls is defined %}
{%   for key, value in service.haproxy_acls.items() %}
    acl {{ key }} {{ value.rule }}
{%     if not service.haproxy_frontend_only | default(false) %}
    use_backend {{ value.backend_name | default(service.haproxy_service_name) }}-back if {{ key }}
{%     endif %}
{%   endfor %}
{% endif %}
{% for entry in service.haproxy_maps | default([])  %}
    {{ entry }}
{% endfor %}
{% if (service.haproxy_ssl | default(false) | bool) and request_option == 'http' and (loop.index == 1 or vip_address in extra_lb_tls_vip_addresses or (service.haproxy_ssl_all_vips | default(false) | bool and vip_address not in extra_lb_vip_addresses)) %}
    http-request add-header X-Forwarded-Proto https
{% endif %}
    mode {{ service.haproxy_balance_type }}
{% if (not service.haproxy_frontend_only | default(false)) or ((service.haproxy_default_backend is defined) and (service.haproxy_default_backend | length > 0)) %}
    default_backend {{ service.haproxy_default_backend | default(service.haproxy_service_name) }}-back
{% endif %}
{% for entry in (service.haproxy_frontend_raw|default([])) + haproxy_frontend_extra_raw %}
    {{ entry }}
{% endfor %}
{% endif %}
{% endfor %}
{% endif %}

{% if not service.haproxy_frontend_only | default(false) %}
{% set backend_options = service.haproxy_backend_options|default([]) %}
{% set backend_arguments = service.haproxy_backend_arguments|default([]) %}

backend {{ service.haproxy_service_name }}-back
    mode {{ service.haproxy_balance_type }}
    balance {{ service.haproxy_balance_alg|default("leastconn") }}
{% if service.haproxy_timeout_server is defined %}
    timeout server {{ service.haproxy_timeout_server }}
{% endif %}
{% if (service.haproxy_stick_table_enabled | default(true) | bool) %}
{%   set stick_table = service.haproxy_stick_table|default( haproxy_stick_table | default([])) %}
{%   for entry in stick_table %}
    {{ entry }}
{%   endfor %}
{% endif %}
{% if request_option == "http" %}
    option forwardfor
{% endif %}
{% for option in backend_options %}
    option {{ option }}
{% endfor %}
{% for argument in backend_arguments %}
    {{ argument }}
{% endfor %}
{% set backend_httpcheck_options = service.haproxy_backend_httpcheck_options|default([]) %}
{% for option in backend_httpcheck_options %}
    http-check {{ option }}
{% endfor %}


{% for host_name in service.haproxy_backend_nodes %}
{% if hostvars[host_name] is defined %}
{%   set ip_addr = hostvars[host_name]['ansible_host'] %}
{% endif %}
{% set entry = [] %}
{% set _ = entry.append("server") %}
{% set _ = entry.append((host_name.name | default(host_name)) | string) %}
{% set _ = entry.append((host_name.ip_addr | default(ip_addr)) + ":" + haproxy_backend_port | string) %}
{% set _ = entry.append("check") %}
{% set _ = entry.append("port") %}
{% set _ = entry.append(haproxy_check_port | string) %}
{% set _ = entry.append("inter") %}
{% set _ = entry.append(service.interval|default(haproxy_interval) | string) %}
{% set _ = entry.append("rise") %}
{% set _ = entry.append(service.backend_rise|default(haproxy_rise | string)) %}
{% set _ = entry.append("fall") %}
{% set _ = entry.append(service.backend_fall|default(haproxy_fall | string)) %}
{% if service.haproxy_backend_ssl | default(False) %}
{% set _ = entry.append("ssl") %}
{% if service.haproxy_backend_ssl_check | default(service.haproxy_backend_ssl) %}
{% set _ = entry.append("check-ssl") %}
{% endif %}
{% if service.haproxy_backend_ca %}
{% set _ = entry.append("ca-file") %}
{% set _ = entry.append(service.haproxy_backend_ca is string | ternary(service.haproxy_backend_ca, haproxy_system_ca)) %}
{% else %}
{% set _ = entry.append("verify none") %}
{% endif %}
{% endif %}
{% set backend_server_options = service.haproxy_backend_server_options|default([]) %}
{% for option in backend_server_options %}
{%  set _ = entry.append(option) %}
{% endfor %}
{% set backend_per_server_options = host_name.backend_server_options|default([]) %}
{% for option in backend_per_server_options %}
{%  set _ = entry.append(option) %}
{% endfor %}
    {{ entry | join(' ') }}
{# TODO: remove if and section inside if after HTTPS upgrade #}
{# During an upgrade of backends from HTTP to HTTPS, need to uses both HTTP and HTTPS backends until backends have been changed #}
{% if service.haproxy_tcp_upgrade_backend | default(false) and service.haproxy_backend_ssl | default(false) %}
{% set entry = [] %}
{% set _ = entry.append("server") %}
{% set _ = entry.append((host_name.name | default(host_name)) + "-http" | string) %}
{% set _ = entry.append((host_name.ip_addr | default(ip_addr)) + ":" + haproxy_backend_port | string) %}
{% set _ = entry.append("check") %}
{% set _ = entry.append("port") %}
{% set _ = entry.append(haproxy_check_port | string) %}
{% set _ = entry.append("inter") %}
{% set _ = entry.append(service.interval|default(haproxy_interval) | string) %}
{% set _ = entry.append("rise") %}
{% set _ = entry.append(service.backend_rise|default(haproxy_rise | string)) %}
{% set _ = entry.append("fall") %}
{% set _ = entry.append(service.backend_fall|default(haproxy_fall | string)) %}
{% set backend_server_options = service.haproxy_backend_server_options|default([]) %}
{% for option in backend_server_options %}
{%  set _ = entry.append(option) %}
{% endfor %}
{% set backend_per_server_options = host_name.backend_server_options|default([]) %}
{% for option in backend_per_server_options %}
{%  set _ = entry.append(option) %}
{% endfor %}
    {{ entry | join(' ') }}
{% endif %}
{% endfor %}

{% for host_name in service.haproxy_backup_nodes|default([]) %}
{% if hostvars[host_name] is defined %}
{%   set ip_addr = hostvars[host_name]['ansible_host'] %}
{% endif %}
{% set entry = [] %}
{% set _ = entry.append("server") %}
{% set _ = entry.append((host_name.name | default(host_name)) | string) %}
{% set _ = entry.append((host_name.ip_addr | default(ip_addr)) + ":" + haproxy_backend_port | string) %}
{% set _ = entry.append("check") %}
{% set _ = entry.append("port") %}
{% set _ = entry.append(haproxy_check_port | string) %}
{% set _ = entry.append("inter") %}
{% set _ = entry.append(haproxy_interval | string) %}
{% set _ = entry.append("rise") %}
{% set _ = entry.append(service.backup_rise|default(haproxy_rise | string)) %}
{% set _ = entry.append("fall") %}
{% set _ = entry.append(service.backup_fall|default(haproxy_fall | string)) %}
{% set _ = entry.append("backup") %}
{% if service.haproxy_backend_ssl | default(False) %}
{% set _ = entry.append("ssl") %}
{% if service.haproxy_backend_ssl_check | default(service.haproxy_backend_ssl) %}
{% set _ = entry.append("check-ssl") %}
{% endif %}
{% if service.haproxy_backend_ca %}
{% set _ = entry.append("ca-file") %}
{% set _ = entry.append(service.haproxy_backend_ca is string | ternary(service.haproxy_backend_ca, haproxy_system_ca)) %}
{% else %}
{% set _ = entry.append("verify none") %}
{% endif %}
{% endif %}
{% set backend_server_options = service.haproxy_backend_server_options|default([]) %}
{% for option in backend_server_options %}
{%  set _ = entry.append(option) %}
{% endfor %}
{% set backend_per_server_options = host_name.backend_server_options|default([]) %}
{% for option in backend_per_server_options %}
{%  set _ = entry.append(option) %}
{% endfor %}
    {{ entry | join(' ') }}
{% endfor %}
{% endif %}