paulbsd-salt/states/haproxy/templates/haproxy.cfg.j2

## {{ salt['pillar.get']('salt_managed', default='Salt Managed') }}
{%- from "haproxy/map.jinja" import haproxy,certs,fqdn with context %}

{%- set ns = namespace(default_backend='notdefined') %}
{%- for name, values in haproxy.config.vhosts.items() %}{% if values.default_backend|default(false) %}{% set ns.default_backend = name %}{% endif %}{% endfor %}

{%- macro internal() -%}
  acl internal src -f {{ haproxy.config.dir }}/maps/access
  http-response return status 403 content-type text/html string "403 forbidden" if !internal
{%- endmacro -%}

{%- macro head() -%}
  http-request return status 200 if METH_HEAD
{%- endmacro -%}

{%- macro statusresponses() -%}
  http-response return status 403 content-type text/html string "403 forbidden" if { status 403 }
  http-response return status 404 content-type text/html string "404 not found" if { status 404 }
{%- endmacro -%}

{%- macro httpcheckrules(layer="layer7",inter="2s",fall=5,rise=5) -%}check observe {{ layer }} inter {{ inter }} fall {{ fall }} rise {{ rise }}{%- endmacro -%}

{%- macro httpsslrules() -%}ssl verify none{%- endmacro -%}

{%- macro httpendpoints(servers=[], check=True, ssl=False, disabled=False) -%}
  {%- for server in servers %}
  server {{ server.name }} {{ server.name }}:{{ server.port }}{{ " " + httpcheckrules(inter=server.inter|default("2s"), fall=server.fall|default(5), rise=server.rise|default(5)) if check }}{{ " " + httpsslrules() if ssl }}{{ " disabled" if server.disabled|default(False) }}{{ " send-proxy" if server.proxy|default(False) }}
  {%- endfor %}
{%- endmacro -%}

{%- macro tcpendpoints(servers=[], check=True) -%}
  {%- for server in servers %}
  server {{ server.name }} {{ server.name }}:{{ server.port }}{{ " check" if check }}{{ " backup" if server.backup|default(False) }} port {{ server.port }}
  {%- endfor %}
{%- endmacro -%}

{%- macro cache() -%}
  http-request cache-use static if { path_end {{ haproxy.config.cache.file_types|join(" ") }} }
  http-response cache-store static
{%- endmacro -%}

{%- macro compression() -%}
  compression algo gzip
  compression type {{ haproxy.config.gzip_mime_types|join(' ') }}
{%- endmacro -%}

{%- macro admin() -%}
# Stats Backend
backend admin from {{ haproxy.config.namespace }}
  mode http
  stats enable
  stats admin if TRUE
  stats refresh 10s
  stats show-modules
  stats show-legends
  stats uri /
{%- endmacro -%}

{%- macro api() -%}
# Runtime API
  stats socket {{ haproxy.config.api.tcpsocket }} level admin
  stats socket {{ haproxy.config.api.filesocket }} mode 666 level admin
{%- endmacro %}

# Global config
global
  lua-prepend-path {{ haproxy.config.dir }}/mods/?.so cpath
  lua-prepend-path {{ haproxy.config.dir }}/scripts/?.lua
{%- for file in haproxy.config.scripts %}
  {%- if not file.lib %}
  lua-load {{ haproxy.config.dir }}/{{ file.name }}
  {%- endif %}
{%- endfor %}
{%- if haproxy.config.api.enable %}
  {{ api() }}
{%- endif %}
  maxconn 1000
  ssl-default-bind-ciphers {{ haproxy.config.ssl_ciphers|join(":") }}
  ssl-default-bind-options {{ haproxy.config.ssl_options|join(" ") }}
  ssl-default-server-ciphers {{ haproxy.config.ssl_ciphers|join(":") }}
  ssl-default-server-options {{ haproxy.config.ssl_options|join(" ") }}
  crt-base {{ haproxy.config.acme_fullchains_dir }}
  ssl-dh-param-file {{ haproxy.config.acme_dh_dir }}/dh.pem

# Defaults values
defaults {{ haproxy.config.namespace }}
{%- for key, value in haproxy.config.defaults.items() %}
  {{ key }} {{ value }}
{%- endfor %}

{% if haproxy.config.peers.hosts -%}
peers paulbsd
  bind *:{{ haproxy.config.peers.port }} ssl crt {{ haproxy.config.acme_fullchains_dir }}
  default-server ssl verify none
  server {{ salt['grains.get']('fqdn') }}
{%- for host in haproxy.config.peers.hosts %}
  server {{ host[0] }} {{ host[1] }}:{{ haproxy.config.peers.port }}
{%- endfor %}
{%- endif %}

# Cache
cache static
  total-max-size 64
  max-object-size {{ haproxy.config.cache.size|default(5000) }}
  max-age 120

# Per IP rates stick table
backend per_ip_rates from {{ haproxy.config.namespace }}
  stick-table type string size {{ haproxy.config.ddos.size|default("1m") }} expire {{ haproxy.config.ddos.timeperiod|default("10s") }} store http_req_rate({{ haproxy.config.ddos.timeperiod|default("10s")}}) {{ "peers paulbsd" if haproxy.config.peers.hosts }}

# Default HTTP frontend
frontend http from {{ haproxy.config.namespace }}
  bind *:{{ haproxy.config.http_port }},:::{{ haproxy.config.http_port }} v4v6 name http
  mode http
{% for name, service in haproxy.config.spoe.items() %}
  filter spoe engine {{ name }} config {{ haproxy.config.dir }}/spoe.cfg
{%- endfor %}

  ## ACLs
  acl http ssl_fc,not
  acl self_host req.hdr(Host) {{ fqdn }}
  acl path_root path /
  acl path_host path_dir /host
  acl path_date path_dir /date
  acl path_srchash path -m dir /srchash

  ## Basic rules
  http-request set-var(txn.srchash) src,crc32,mod(100)
  http-request set-var(txn.httpdate) date,http_date()
  http-request return status 200 content-type text/html lf-string "%H\n" if self_host path_host
  http-request return status 200 content-type text/html lf-string "%[var(txn.httpdate)]\n" if self_host path_date
  http-request return status 200 content-type text/html lf-string "%[var(txn.srchash)]\n" if self_host path_srchash
  http-request redirect scheme https if http

# Default HTTPS frontend
frontend https from {{ haproxy.config.namespace }}
.if feature(QUIC)
  bind quic4@*:{{ haproxy.config.https_port }},quic6@:::{{ haproxy.config.https_port }} v4v6 ssl crt {{ haproxy.config.acme_fullchains_dir }}{% if haproxy.config.http2 %} alpn h3,h2,http/1.1{% endif %} name https
.else
  bind *:{{ haproxy.config.https_port }},:::{{ haproxy.config.https_port }} v4v6 ssl crt {{ haproxy.config.acme_fullchains_dir }}{% if haproxy.config.http2 %} alpn h2,http/1.1{% endif %} name https
.endif
  mode http
  option httplog
{% for name, service in haproxy.config.spoe.items() %}
  filter spoe engine {{ name }} config {{ haproxy.config.dir }}/spoe.cfg
{%- endfor %}

  ## ACLs
  acl internal src -f {{ haproxy.config.dir }}/maps/access
  acl domains req.hdr(Host),map_dom({{ haproxy.config.dir }}/maps/domains) -m found req.hdr(host) -m str %H
  acl security_txt path /.well-known/security.txt
  acl robots_txt path /robots.txt
  acl max_req_rate sc_http_req_rate(0) gt {{ haproxy.config.ddos.maxrequests|default(200) }}
  acl self_host req.hdr(Host) {{ fqdn }}
  acl path_root path /
  acl path_host path_dir /host
  acl path_date path_dir /date
  acl path_srchash path /srchash

  ## Basic rules
  http-request set-var(txn.random) rand,mul(5)
  http-request set-var(txn.httpdate) date,http_date()
  http-request set-var(txn.srchash) src,crc32,mod(100)
  http-request set-var(req.src) src
  http-request set-var(req.host) req.hdr(Host)
  http-request set-var(req.accesshash) str(),concat(,req.src,),concat(-,req.host,)
  http-request track-sc0 var(req.accesshash) table per_ip_rates

  http-request capture req.hdr(User-Agent) len 200
  http-request capture req.hdr(Content-Type) len 200
  http-request capture req.hdr(Referer) len 200
  http-request capture sc_http_req_rate(0) len 4

  ## DDoS
  http-request deny deny_status 429 if max_req_rate !internal

  ## Returns
  http-request return status 200 content-type text/plain string "User-agent: *\r\nAllow: /" if robots_txt
  http-request return status 200 content-type text/plain string "Contact: mailto:paul@paulbsd.com" if security_txt
  http-request return status 200 content-type text/html lf-string "%H\n" if self_host path_host
  http-request return status 200 content-type text/html lf-string "%[var(txn.httpdate)]\n" if self_host path_date
  http-request return status 200 content-type text/html lf-string "%[var(txn.srchash)]\n" if self_host path_srchash

  ## Headers
  http-request set-header X-Proxy-Id "%H"
  http-request set-header X-Proto https if { ssl_fc }

  http-response set-header Date "%[var(txn.httpdate)]"
  http-response set-header Server "{{ haproxy.config.servername }}"
  http-response set-header X-Random "%[var(txn.random)]"

  log-format "%ci:%cp [%tr] %ft %b/%s %TR/%Tw/%Tc/%Tr/%Ta %ST %B %CC %CS %tsc %ac/%fc/%bc/%sc/%rc %sq/%bq %hr %hs %{+Q}r"

  http-request redirect location %[req.hdr(Host),map_dom({{ haproxy.config.dir }}/maps/redirects)] code 301 if { req.hdr(Host),map_dom({{ haproxy.config.dir }}/maps/redirects) -m found }
  http-request deny deny_status 404 unless domains
{%- if haproxy.config.admin %}
  use_backend admin if self_host internal
{%- endif %}
  use_backend %[req.hdr(Host),lower,map({{ haproxy.config.dir }}/maps/vhosts,nginx)]
  monitor-uri /dead_or_alive
  default_backend {{ ns.default_backend }}


# HTTP Backends
{%- for name, values in haproxy.config.vhosts.items() %}
{%- if not values.redirect|default(False) %}
backend {{ name }} from {{ haproxy.config.namespace }}
  balance {{ values.balance|default(haproxy.config.balance) }}
  mode http
  option forwardfor
{%- if values.check|default(haproxy.config.check) %}
  option httpchk
{%- for step in values.check_steps|default([]) %}
  http-check {{ step }}
{%- endfor %}
{%- endif %}
{%- if values.overrides|default([]) %}
{%- for override in values.overrides %}
  {{ override }}
{%- endfor %}
{%- endif %}
{%- if values.head|default(False) %}
  {{ head() }}
{%- endif %}

{%- if values.compression|default(True) %}
  {{ compression() }}
{%- endif %}

{%- if values.usecache|default(True) %}
  {{ cache() }}
{%- endif %}

{%- if values.internal|default(False) %}
  {{ internal() }}
{%- endif %}
  {{- httpendpoints(servers=values.servers, check=values.check|default(haproxy.config.check), ssl=values.ssl|default(False)) }}
{%- endif %}
{% endfor %}

# TCP services
{%- for name, values in haproxy.config.services.items() %}
listen {{ name }} from {{ haproxy.config.namespace }}
  bind *:{{ values.port }},:::{{ values.port }} v4v6 name {{ name }}
  mode tcp
  option tcplog
  option tcpka
{%- if values.type == "postgres" %}
  option pgsql-check user repmgr
{%- endif %}
{%- if values.type == "spoe" %}
  timeout connect 1s
  timeout server 1s
  option spop-check
{%- endif %}
  default-server inter 3s fall 3
  {{- tcpendpoints(servers=values.servers, check=values.check|default(haproxy.config.check)) }}
{% endfor %}

# SPOE Agents
{%- for name, values in haproxy.config.spoe.items() %}
backend {{ name }} from {{ haproxy.config.namespace }}
  mode tcp
  timeout connect 5s
  timeout server 3m
  option spop-check
  {{- tcpendpoints(servers=values.servers, check=values.check|default(haproxy.config.check)) }}
{% endfor %}

{%- if haproxy.config.admin %}
{{ admin() }}
{%- endif %}