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nginx.tmpl
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nginx.tmpl
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{{ $all := . }}
{{ $servers := .Servers }}
{{ $cfg := .Cfg }}
{{ $IsIPV6Enabled := .IsIPV6Enabled }}
{{ $healthzURI := .HealthzURI }}
{{ $backends := .Backends }}
{{ $proxyHeaders := .ProxySetHeaders }}
{{ $addHeaders := .AddHeaders }}
# Configuration checksum: {{ $all.Cfg.Checksum }}
# setup custom paths that do not require root access
pid {{ .PID }};
{{ if $cfg.UseGeoIP2 }}
load_module /etc/nginx/modules/ngx_http_geoip2_module.so;
{{ end }}
{{ if (shouldLoadModSecurityModule $cfg $servers) }}
load_module /etc/nginx/modules/ngx_http_modsecurity_module.so;
{{ end }}
{{ if $cfg.EnableOpentracing }}
load_module /etc/nginx/modules/ngx_http_opentracing_module.so;
{{ end }}
daemon off;
worker_processes {{ $cfg.WorkerProcesses }};
{{ if gt (len $cfg.WorkerCPUAffinity) 0 }}
worker_cpu_affinity {{ $cfg.WorkerCPUAffinity }};
{{ end }}
worker_rlimit_nofile {{ $cfg.MaxWorkerOpenFiles }};
{{/* http://nginx.org/en/docs/ngx_core_module.html#worker_shutdown_timeout */}}
{{/* avoid waiting too long during a reload */}}
worker_shutdown_timeout {{ $cfg.WorkerShutdownTimeout }} ;
{{ if not (empty $cfg.MainSnippet) }}
{{ $cfg.MainSnippet }}
{{ end }}
events {
multi_accept {{ if $cfg.EnableMultiAccept }}on{{ else }}off{{ end }};
worker_connections {{ $cfg.MaxWorkerConnections }};
use epoll;
}
http {
lua_package_path "/usr/local/openresty/site/lualib/?.ljbc;/usr/local/openresty/site/lualib/?/init.ljbc;/usr/local/openresty/lualib/?.ljbc;/usr/local/openresty/lualib/?/init.ljbc;/usr/local/openresty/site/lualib/?.lua;/usr/local/openresty/site/lualib/?/init.lua;/usr/local/openresty/lualib/?.lua;/usr/local/openresty/lualib/?/init.lua;./?.lua;/usr/local/openresty/luajit/share/luajit-2.1.0-beta3/?.lua;/usr/local/share/lua/5.1/?.lua;/usr/local/share/lua/5.1/?/init.lua;/usr/local/openresty/luajit/share/lua/5.1/?.lua;/usr/local/openresty/luajit/share/lua/5.1/?/init.lua;/usr/local/lib/lua/?.lua;;";
lua_package_cpath "/usr/local/openresty/site/lualib/?.so;/usr/local/openresty/lualib/?.so;./?.so;/usr/local/lib/lua/5.1/?.so;/usr/local/openresty/luajit/lib/lua/5.1/?.so;/usr/local/lib/lua/5.1/loadall.so;/usr/local/openresty/luajit/lib/lua/5.1/?.so;;";
{{ buildLuaSharedDictionaries $servers $all.Cfg.DisableLuaRestyWAF }}
init_by_lua_block {
collectgarbage("collect")
{{ if not $all.Cfg.DisableLuaRestyWAF }}
local lua_resty_waf = require("resty.waf")
lua_resty_waf.init()
{{ end }}
-- init modules
local ok, res
ok, res = pcall(require, "lua_ingress")
if not ok then
error("require failed: " .. tostring(res))
else
lua_ingress = res
lua_ingress.set_config({{ configForLua $all }})
end
ok, res = pcall(require, "configuration")
if not ok then
error("require failed: " .. tostring(res))
else
configuration = res
configuration.nameservers = { {{ buildResolversForLua $cfg.Resolver $cfg.DisableIpv6DNS }} }
end
ok, res = pcall(require, "balancer")
if not ok then
error("require failed: " .. tostring(res))
else
balancer = res
end
{{ if $all.EnableMetrics }}
ok, res = pcall(require, "monitor")
if not ok then
error("require failed: " .. tostring(res))
else
monitor = res
end
{{ end }}
{{ if $all.EnableDynamicCertificates }}
ok, res = pcall(require, "certificate")
if not ok then
error("require failed: " .. tostring(res))
else
certificate = res
end
{{ end }}
ok, res = pcall(require, "plugins")
if not ok then
error("require failed: " .. tostring(res))
else
plugins = res
end
-- load all plugins that'll be used here
plugins.init({})
}
init_worker_by_lua_block {
lua_ingress.init_worker()
balancer.init_worker()
{{ if $all.EnableMetrics }}
monitor.init_worker()
{{ end }}
plugins.run()
}
{{/* Enable the real_ip module only if we use either X-Forwarded headers or Proxy Protocol. */}}
{{/* we use the value of the real IP for the geo_ip module */}}
{{ if or $cfg.UseForwardedHeaders $cfg.UseProxyProtocol }}
{{ if $cfg.UseProxyProtocol }}
real_ip_header proxy_protocol;
{{ else }}
real_ip_header {{ $cfg.ForwardedForHeader }};
{{ end }}
real_ip_recursive on;
{{ range $trusted_ip := $cfg.ProxyRealIPCIDR }}
set_real_ip_from {{ $trusted_ip }};
{{ end }}
{{ end }}
{{ if $all.Cfg.EnableModsecurity }}
modsecurity on;
modsecurity_rules_file /etc/nginx/modsecurity/modsecurity.conf;
{{ if $all.Cfg.EnableOWASPCoreRules }}
modsecurity_rules_file /etc/nginx/owasp-modsecurity-crs/nginx-modsecurity.conf;
{{ end }}
{{ end }}
{{ if $cfg.UseGeoIP }}
{{/* databases used to determine the country depending on the client IP address */}}
{{/* http://nginx.org/en/docs/http/ngx_http_geoip_module.html */}}
{{/* this is require to calculate traffic for individual country using GeoIP in the status page */}}
geoip_country /etc/nginx/geoip/GeoIP.dat;
geoip_city /etc/nginx/geoip/GeoLiteCity.dat;
geoip_org /etc/nginx/geoip/GeoIPASNum.dat;
geoip_proxy_recursive on;
{{ end }}
{{ if $cfg.UseGeoIP2 }}
# https://github.com/leev/ngx_http_geoip2_module#example-usage
geoip2 /etc/nginx/geoip/GeoLite2-City.mmdb {
$geoip2_city_country_code source=$the_real_ip country iso_code;
$geoip2_city_country_name source=$the_real_ip country names en;
$geoip2_city source=$the_real_ip city names en;
$geoip2_postal_code source=$the_real_ip postal code;
$geoip2_dma_code source=$the_real_ip location metro_code;
$geoip2_latitude source=$the_real_ip location latitude;
$geoip2_longitude source=$the_real_ip location longitude;
$geoip2_region_code source=$the_real_ip subdivisions 0 iso_code;
$geoip2_region_name source=$the_real_ip subdivisions 0 names en;
}
geoip2 /etc/nginx/geoip/GeoLite2-ASN.mmdb {
$geoip2_asn source=$the_real_ip autonomous_system_number;
}
{{ end }}
aio threads;
aio_write on;
tcp_nopush on;
tcp_nodelay on;
log_subrequest on;
reset_timedout_connection on;
keepalive_timeout {{ $cfg.KeepAlive }}s;
keepalive_requests {{ $cfg.KeepAliveRequests }};
client_body_temp_path /tmp/client-body;
fastcgi_temp_path /tmp/fastcgi-temp;
proxy_temp_path /tmp/proxy-temp;
ajp_temp_path /tmp/ajp-temp;
client_header_buffer_size {{ $cfg.ClientHeaderBufferSize }};
client_header_timeout {{ $cfg.ClientHeaderTimeout }}s;
large_client_header_buffers {{ $cfg.LargeClientHeaderBuffers }};
client_body_buffer_size {{ $cfg.ClientBodyBufferSize }};
client_body_timeout {{ $cfg.ClientBodyTimeout }}s;
http2_max_field_size {{ $cfg.HTTP2MaxFieldSize }};
http2_max_header_size {{ $cfg.HTTP2MaxHeaderSize }};
http2_max_requests {{ $cfg.HTTP2MaxRequests }};
types_hash_max_size 2048;
server_names_hash_max_size {{ $cfg.ServerNameHashMaxSize }};
server_names_hash_bucket_size {{ $cfg.ServerNameHashBucketSize }};
map_hash_bucket_size {{ $cfg.MapHashBucketSize }};
proxy_headers_hash_max_size {{ $cfg.ProxyHeadersHashMaxSize }};
proxy_headers_hash_bucket_size {{ $cfg.ProxyHeadersHashBucketSize }};
variables_hash_bucket_size {{ $cfg.VariablesHashBucketSize }};
variables_hash_max_size {{ $cfg.VariablesHashMaxSize }};
underscores_in_headers {{ if $cfg.EnableUnderscoresInHeaders }}on{{ else }}off{{ end }};
ignore_invalid_headers {{ if $cfg.IgnoreInvalidHeaders }}on{{ else }}off{{ end }};
limit_req_status {{ $cfg.LimitReqStatusCode }};
limit_conn_status {{ $cfg.LimitConnStatusCode }};
{{ if $cfg.EnableOpentracing }}
opentracing on;
{{ end }}
{{ buildOpentracing $cfg }}
include /etc/nginx/mime.types;
default_type text/html;
{{ if $cfg.EnableBrotli }}
brotli on;
brotli_comp_level {{ $cfg.BrotliLevel }};
brotli_types {{ $cfg.BrotliTypes }};
{{ end }}
{{ if $cfg.UseGzip }}
gzip on;
gzip_comp_level {{ $cfg.GzipLevel }};
gzip_http_version 1.1;
gzip_min_length 256;
gzip_types {{ $cfg.GzipTypes }};
gzip_proxied any;
gzip_vary on;
{{ end }}
# Custom headers for response
{{ range $k, $v := $addHeaders }}
add_header {{ $k }} "{{ $v }}";
{{ end }}
server_tokens {{ if $cfg.ShowServerTokens }}on{{ else }}off{{ end }};
{{ if not $cfg.ShowServerTokens }}
more_clear_headers Server;
{{ end }}
# disable warnings
uninitialized_variable_warn off;
# Additional available variables:
# $namespace
# $ingress_name
# $service_name
# $service_port
log_format upstreaminfo {{ if $cfg.LogFormatEscapeJSON }}escape=json {{ end }}'{{ buildLogFormatUpstream $cfg }}';
{{/* map urls that should not appear in access.log */}}
{{/* http://nginx.org/en/docs/http/ngx_http_log_module.html#access_log */}}
map $request_uri $loggable {
{{ range $reqUri := $cfg.SkipAccessLogURLs }}
{{ $reqUri }} 0;{{ end }}
default 1;
}
{{ if $cfg.DisableAccessLog }}
access_log off;
{{ else }}
{{ if $cfg.EnableSyslog }}
access_log syslog:server={{ $cfg.SyslogHost }}:{{ $cfg.SyslogPort }} upstreaminfo if=$loggable;
{{ else }}
access_log {{ $cfg.AccessLogPath }} upstreaminfo {{ $cfg.AccessLogParams }} if=$loggable;
{{ end }}
{{ end }}
{{ if $cfg.EnableSyslog }}
error_log syslog:server={{ $cfg.SyslogHost }}:{{ $cfg.SyslogPort }} {{ $cfg.ErrorLogLevel }};
{{ else }}
error_log {{ $cfg.ErrorLogPath }} {{ $cfg.ErrorLogLevel }};
{{ end }}
{{ buildResolvers $cfg.Resolver $cfg.DisableIpv6DNS }}
# See https://www.nginx.com/blog/websocket-nginx
map $http_upgrade $connection_upgrade {
default upgrade;
{{ if (gt $cfg.UpstreamKeepaliveConnections 0) }}
# See http://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive
'' '';
{{ else }}
'' close;
{{ end }}
}
# The following is a sneaky way to do "set $the_real_ip $remote_addr"
# Needed because using set is not allowed outside server blocks.
map '' $the_real_ip {
{{ if $cfg.UseProxyProtocol }}
# Get IP address from Proxy Protocol
default $proxy_protocol_addr;
{{ else }}
default $remote_addr;
{{ end }}
}
# Reverse proxies can detect if a client provides a X-Request-ID header, and pass it on to the backend server.
# If no such header is provided, it can provide a random value.
map $http_x_request_id $req_id {
default $http_x_request_id;
{{ if $cfg.GenerateRequestID }}
"" $request_id;
{{ end }}
}
{{ if and $cfg.UseForwardedHeaders $cfg.ComputeFullForwardedFor }}
# We can't use $proxy_add_x_forwarded_for because the realip module
# replaces the remote_addr too soon
map $http_x_forwarded_for $full_x_forwarded_for {
{{ if $all.Cfg.UseProxyProtocol }}
default "$http_x_forwarded_for, $proxy_protocol_addr";
'' "$proxy_protocol_addr";
{{ else }}
default "$http_x_forwarded_for, $realip_remote_addr";
'' "$realip_remote_addr";
{{ end}}
}
{{ end }}
# Create a variable that contains the literal $ character.
# This works because the geo module will not resolve variables.
geo $literal_dollar {
default "$";
}
server_name_in_redirect off;
port_in_redirect off;
ssl_protocols {{ $cfg.SSLProtocols }};
# turn on session caching to drastically improve performance
{{ if $cfg.SSLSessionCache }}
ssl_session_cache builtin:1000 shared:SSL:{{ $cfg.SSLSessionCacheSize }};
ssl_session_timeout {{ $cfg.SSLSessionTimeout }};
{{ end }}
# allow configuring ssl session tickets
ssl_session_tickets {{ if $cfg.SSLSessionTickets }}on{{ else }}off{{ end }};
{{ if not (empty $cfg.SSLSessionTicketKey ) }}
ssl_session_ticket_key /etc/nginx/tickets.key;
{{ end }}
# slightly reduce the time-to-first-byte
ssl_buffer_size {{ $cfg.SSLBufferSize }};
{{ if not (empty $cfg.SSLCiphers) }}
# allow configuring custom ssl ciphers
ssl_ciphers '{{ $cfg.SSLCiphers }}';
ssl_prefer_server_ciphers on;
{{ end }}
{{ if not (empty $cfg.SSLDHParam) }}
# allow custom DH file http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_dhparam
ssl_dhparam {{ $cfg.SSLDHParam }};
{{ end }}
{{ if not $cfg.EnableDynamicTLSRecords }}
ssl_dyn_rec_size_lo 0;
{{ end }}
ssl_ecdh_curve {{ $cfg.SSLECDHCurve }};
{{ if gt (len $cfg.CustomHTTPErrors) 0 }}
proxy_intercept_errors on;
{{ end }}
{{ range $errCode := $cfg.CustomHTTPErrors }}
error_page {{ $errCode }} = @custom_upstream-default-backend_{{ $errCode }};{{ end }}
proxy_ssl_session_reuse on;
{{ if $cfg.AllowBackendServerHeader }}
proxy_pass_header Server;
{{ end }}
{{ range $header := $cfg.HideHeaders }}proxy_hide_header {{ $header }};
{{ end }}
{{ if not (empty $cfg.HTTPSnippet) }}
# Custom code snippet configured in the configuration configmap
{{ $cfg.HTTPSnippet }}
{{ end }}
upstream upstream_balancer {
server 0.0.0.1; # placeholder
balancer_by_lua_block {
balancer.balance()
}
{{ if (gt $cfg.UpstreamKeepaliveConnections 0) }}
keepalive {{ $cfg.UpstreamKeepaliveConnections }};
keepalive_timeout {{ $cfg.UpstreamKeepaliveTimeout }}s;
keepalive_requests {{ $cfg.UpstreamKeepaliveRequests }};
{{ end }}
}
{{ range $rl := (filterRateLimits $servers ) }}
# Ratelimit {{ $rl.Name }}
geo $the_real_ip $whitelist_{{ $rl.ID }} {
default 0;
{{ range $ip := $rl.Whitelist }}
{{ $ip }} 1;{{ end }}
}
# Ratelimit {{ $rl.Name }}
map $whitelist_{{ $rl.ID }} $limit_{{ $rl.ID }} {
0 {{ $cfg.LimitConnZoneVariable }};
1 "";
}
{{ end }}
{{/* build all the required rate limit zones. Each annotation requires a dedicated zone */}}
{{/* 1MB -> 16 thousand 64-byte states or about 8 thousand 128-byte states */}}
{{ range $zone := (buildRateLimitZones $servers) }}
{{ $zone }}
{{ end }}
# Global filters
{{ range $ip := $cfg.BlockCIDRs }}deny {{ trimSpace $ip }};
{{ end }}
{{ if gt (len $cfg.BlockUserAgents) 0 }}
map $http_user_agent $block_ua {
default 0;
{{ range $ua := $cfg.BlockUserAgents }}{{ trimSpace $ua }} 1;
{{ end }}
}
{{ end }}
{{ if gt (len $cfg.BlockReferers) 0 }}
map $http_referer $block_ref {
default 0;
{{ range $ref := $cfg.BlockReferers }}{{ trimSpace $ref }} 1;
{{ end }}
}
{{ end }}
{{/* Build server redirects (from/to www) */}}
{{ range $redirect := .RedirectServers }}
## start server {{ $redirect.From }}
server {
{{ range $address := $all.Cfg.BindAddressIpv4 }}
listen {{ $address }}:{{ $all.ListenPorts.HTTP }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }};
listen {{ $address }}:{{ if $all.IsSSLPassthroughEnabled }}{{ $all.ListenPorts.SSLProxy }} proxy_protocol{{ else }}{{ $all.ListenPorts.HTTPS }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ end }} ssl;
{{ else }}
listen {{ $all.ListenPorts.HTTP }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }};
listen {{ if $all.IsSSLPassthroughEnabled }}{{ $all.ListenPorts.SSLProxy }} proxy_protocol{{ else }}{{ $all.ListenPorts.HTTPS }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ end }} ssl;
{{ end }}
{{ if $IsIPV6Enabled }}
{{ range $address := $all.Cfg.BindAddressIpv6 }}
listen {{ $address }}:{{ $all.ListenPorts.HTTP }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }};
listen {{ $address }}:{{ if $all.IsSSLPassthroughEnabled }}{{ $all.ListenPorts.SSLProxy }} proxy_protocol{{ else }}{{ $all.ListenPorts.HTTPS }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ end }};
{{ else }}
listen [::]:{{ $all.ListenPorts.HTTP }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }};
listen [::]:{{ if $all.IsSSLPassthroughEnabled }}{{ $all.ListenPorts.SSLProxy }} proxy_protocol{{ else }}{{ $all.ListenPorts.HTTPS }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ end }};
{{ end }}
{{ end }}
server_name {{ $redirect.From }};
{{ if not (empty $redirect.SSLCert.PemFileName) }}
{{/* comment PEM sha is required to detect changes in the generated configuration and force a reload */}}
# PEM sha: {{ $redirect.SSLCert.PemSHA }}
ssl_certificate {{ $redirect.SSLCert.PemFileName }};
ssl_certificate_key {{ $redirect.SSLCert.PemFileName }};
{{ if $all.EnableDynamicCertificates}}
ssl_certificate_by_lua_block {
certificate.call()
}
{{ end }}
{{ end }}
{{ if gt (len $cfg.BlockUserAgents) 0 }}
if ($block_ua) {
return 403;
}
{{ end }}
{{ if gt (len $cfg.BlockReferers) 0 }}
if ($block_ref) {
return 403;
}
{{ end }}
{{ if ne $all.ListenPorts.HTTPS 443 }}
{{ $redirect_port := (printf ":%v" $all.ListenPorts.HTTPS) }}
return {{ $all.Cfg.HTTPRedirectCode }} $scheme://{{ $redirect.To }}{{ $redirect_port }}$request_uri;
{{ else }}
return {{ $all.Cfg.HTTPRedirectCode }} $scheme://{{ $redirect.To }}$request_uri;
{{ end }}
}
## end server {{ $redirect.From }}
{{ end }}
{{ range $server := $servers }}
## start server {{ $server.Hostname }}
server {
server_name {{ $server.Hostname }} {{ $server.Alias }};
{{ if gt (len $cfg.BlockUserAgents) 0 }}
if ($block_ua) {
return 403;
}
{{ end }}
{{ if gt (len $cfg.BlockReferers) 0 }}
if ($block_ref) {
return 403;
}
{{ end }}
{{ template "SERVER" serverConfig $all $server }}
{{ if not (empty $cfg.ServerSnippet) }}
# Custom code snippet configured in the configuration configmap
{{ $cfg.ServerSnippet }}
{{ end }}
{{ template "CUSTOM_ERRORS" (buildCustomErrorDeps "upstream-default-backend" $cfg.CustomHTTPErrors $all.EnableMetrics) }}
}
## end server {{ $server.Hostname }}
{{ end }}
# backend for when default-backend-service is not configured or it does not have endpoints
server {
listen {{ $all.ListenPorts.Default }} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }};
{{ if $IsIPV6Enabled }}listen [::]:{{ $all.ListenPorts.Default }} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }};{{ end }}
set $proxy_upstream_name "internal";
access_log off;
location / {
return 404;
}
}
# default server, used for NGINX healthcheck and access to nginx stats
server {
listen unix:{{ .StatusSocket }};
set $proxy_upstream_name "internal";
keepalive_timeout 0;
gzip off;
access_log off;
{{ if $cfg.EnableOpentracing }}
opentracing off;
{{ end }}
location {{ $healthzURI }} {
return 200;
}
location /is-dynamic-lb-initialized {
content_by_lua_block {
local configuration = require("configuration")
local backend_data = configuration.get_backends_data()
if not backend_data then
ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
return
end
ngx.say("OK")
ngx.exit(ngx.HTTP_OK)
}
}
location {{ .StatusPath }} {
stub_status on;
}
location /configuration {
# this should be equals to configuration_data dict
client_max_body_size 10m;
client_body_buffer_size 10m;
proxy_buffering off;
content_by_lua_block {
configuration.call()
}
}
location / {
content_by_lua_block {
ngx.exit(ngx.HTTP_NOT_FOUND)
}
}
}
}
stream {
lua_package_cpath "/usr/local/lib/lua/?.so;/usr/lib/lua-platform-path/lua/5.1/?.so;;";
lua_package_path "/etc/nginx/lua/?.lua;/etc/nginx/lua/vendor/?.lua;/usr/local/lib/lua/?.lua;;";
lua_shared_dict tcp_udp_configuration_data 5M;
init_by_lua_block {
collectgarbage("collect")
-- init modules
local ok, res
ok, res = pcall(require, "configuration")
if not ok then
error("require failed: " .. tostring(res))
else
configuration = res
configuration.nameservers = { {{ buildResolversForLua $cfg.Resolver $cfg.DisableIpv6DNS }} }
end
ok, res = pcall(require, "tcp_udp_configuration")
if not ok then
error("require failed: " .. tostring(res))
else
tcp_udp_configuration = res
end
ok, res = pcall(require, "tcp_udp_balancer")
if not ok then
error("require failed: " .. tostring(res))
else
tcp_udp_balancer = res
end
}
init_worker_by_lua_block {
tcp_udp_balancer.init_worker()
}
lua_add_variable $proxy_upstream_name;
log_format log_stream {{ $cfg.LogFormatStream }};
{{ if $cfg.DisableAccessLog }}
access_log off;
{{ else }}
access_log {{ $cfg.AccessLogPath }} log_stream {{ $cfg.AccessLogParams }};
{{ end }}
error_log {{ $cfg.ErrorLogPath }};
upstream upstream_balancer {
server 0.0.0.1:1234; # placeholder
balancer_by_lua_block {
tcp_udp_balancer.balance()
}
}
server {
listen unix:{{ .StreamSocket }};
access_log off;
content_by_lua_block {
tcp_udp_configuration.call()
}
}
# TCP services
{{ range $tcpServer := .TCPBackends }}
server {
preread_by_lua_block {
ngx.var.proxy_upstream_name="tcp-{{ $tcpServer.Backend.Namespace }}-{{ $tcpServer.Backend.Name }}-{{ $tcpServer.Backend.Port }}";
}
{{ range $address := $all.Cfg.BindAddressIpv4 }}
listen {{ $address }}:{{ $tcpServer.Port }}{{ if $tcpServer.Backend.ProxyProtocol.Decode }} proxy_protocol{{ end }};
{{ else }}
listen {{ $tcpServer.Port }}{{ if $tcpServer.Backend.ProxyProtocol.Decode }} proxy_protocol{{ end }};
{{ end }}
{{ if $IsIPV6Enabled }}
{{ range $address := $all.Cfg.BindAddressIpv6 }}
listen {{ $address }}:{{ $tcpServer.Port }}{{ if $tcpServer.Backend.ProxyProtocol.Decode }} proxy_protocol{{ end }};
{{ else }}
listen [::]:{{ $tcpServer.Port }}{{ if $tcpServer.Backend.ProxyProtocol.Decode }} proxy_protocol{{ end }};
{{ end }}
{{ end }}
proxy_timeout {{ $cfg.ProxyStreamTimeout }};
proxy_pass upstream_balancer;
{{ if $tcpServer.Backend.ProxyProtocol.Encode }}
proxy_protocol on;
{{ end }}
}
{{ end }}
# UDP services
{{ range $udpServer := .UDPBackends }}
server {
preread_by_lua_block {
ngx.var.proxy_upstream_name="udp-{{ $udpServer.Backend.Namespace }}-{{ $udpServer.Backend.Name }}-{{ $udpServer.Backend.Port }}";
}
{{ range $address := $all.Cfg.BindAddressIpv4 }}
listen {{ $address }}:{{ $udpServer.Port }} udp;
{{ else }}
listen {{ $udpServer.Port }} udp;
{{ end }}
{{ if $IsIPV6Enabled }}
{{ range $address := $all.Cfg.BindAddressIpv6 }}
listen {{ $address }}:{{ $udpServer.Port }} udp;
{{ else }}
listen [::]:{{ $udpServer.Port }} udp;
{{ end }}
{{ end }}
proxy_responses {{ $cfg.ProxyStreamResponses }};
proxy_timeout {{ $cfg.ProxyStreamTimeout }};
proxy_pass upstream_balancer;
}
{{ end }}
}
{{/* definition of templates to avoid repetitions */}}
{{ define "CUSTOM_ERRORS" }}
{{ $enableMetrics := .EnableMetrics }}
{{ $upstreamName := .UpstreamName }}
{{ range $errCode := .ErrorCodes }}
location @custom_{{ $upstreamName }}_{{ $errCode }} {
internal;
proxy_intercept_errors off;
proxy_set_header X-Code {{ $errCode }};
proxy_set_header X-Format $http_accept;
proxy_set_header X-Original-URI $request_uri;
proxy_set_header X-Namespace $namespace;
proxy_set_header X-Ingress-Name $ingress_name;
proxy_set_header X-Service-Name $service_name;
proxy_set_header X-Service-Port $service_port;
proxy_set_header X-Request-ID $req_id;
proxy_set_header Host $best_http_host;
set $proxy_upstream_name {{ $upstreamName }};
rewrite (.*) / break;
proxy_pass http://upstream_balancer;
log_by_lua_block {
{{ if $enableMetrics }}
monitor.call()
{{ end }}
}
}
{{ end }}
{{ end }}
{{/* CORS support from https://michielkalkman.com/snippets/nginx-cors-open-configuration.html */}}
{{ define "CORS" }}
{{ $cors := .CorsConfig }}
# Cors Preflight methods needs additional options and different Return Code
if ($request_method = 'OPTIONS') {
more_set_headers 'Access-Control-Allow-Origin: {{ $cors.CorsAllowOrigin }}';
{{ if $cors.CorsAllowCredentials }} more_set_headers 'Access-Control-Allow-Credentials: {{ $cors.CorsAllowCredentials }}'; {{ end }}
more_set_headers 'Access-Control-Allow-Methods: {{ $cors.CorsAllowMethods }}';
more_set_headers 'Access-Control-Allow-Headers: {{ $cors.CorsAllowHeaders }}';
more_set_headers 'Access-Control-Max-Age: {{ $cors.CorsMaxAge }}';
more_set_headers 'Content-Type: text/plain charset=UTF-8';
more_set_headers 'Content-Length: 0';
return 204;
}
more_set_headers 'Access-Control-Allow-Origin: {{ $cors.CorsAllowOrigin }}';
{{ if $cors.CorsAllowCredentials }} more_set_headers 'Access-Control-Allow-Credentials: {{ $cors.CorsAllowCredentials }}'; {{ end }}
more_set_headers 'Access-Control-Allow-Methods: {{ $cors.CorsAllowMethods }}';
more_set_headers 'Access-Control-Allow-Headers: {{ $cors.CorsAllowHeaders }}';
{{ end }}
{{/* definition of server-template to avoid repetitions with server-alias */}}
{{ define "SERVER" }}
{{ $all := .First }}
{{ $server := .Second }}
{{ range $address := $all.Cfg.BindAddressIpv4 }}
listen {{ $address }}:{{ $all.ListenPorts.HTTP }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ if eq $server.Hostname "_"}} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }}{{end}};
{{ else }}
listen {{ $all.ListenPorts.HTTP }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ if eq $server.Hostname "_"}} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }}{{end}};
{{ end }}
{{ if $all.IsIPV6Enabled }}
{{ range $address := $all.Cfg.BindAddressIpv6 }}
listen {{ $address }}:{{ $all.ListenPorts.HTTP }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ if eq $server.Hostname "_"}} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }}{{ end }};
{{ else }}
listen [::]:{{ $all.ListenPorts.HTTP }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ if eq $server.Hostname "_"}} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }}{{ end }};
{{ end }}
{{ end }}
set $proxy_upstream_name "-";
set $pass_access_scheme $scheme;
set $pass_server_port $server_port;
set $best_http_host $http_host;
set $pass_port $pass_server_port;
{{/* Listen on {{ $all.ListenPorts.SSLProxy }} because port {{ $all.ListenPorts.HTTPS }} is used in the TLS sni server */}}
{{/* This listener must always have proxy_protocol enabled, because the SNI listener forwards on source IP info in it. */}}
{{ if not (empty $server.SSLCert.PemFileName) }}
{{ range $address := $all.Cfg.BindAddressIpv4 }}
listen {{ $address }}:{{ if $all.IsSSLPassthroughEnabled }}{{ $all.ListenPorts.SSLProxy }} proxy_protocol {{ else }}{{ $all.ListenPorts.HTTPS }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ end }} {{ if eq $server.Hostname "_"}} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }}{{end}} ssl {{ if $all.Cfg.UseHTTP2 }}http2{{ end }};
{{ else }}
listen {{ if $all.IsSSLPassthroughEnabled }}{{ $all.ListenPorts.SSLProxy }} proxy_protocol {{ else }}{{ $all.ListenPorts.HTTPS }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ end }} {{ if eq $server.Hostname "_"}} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }}{{end}} ssl {{ if $all.Cfg.UseHTTP2 }}http2{{ end }};
{{ end }}
{{ if $all.IsIPV6Enabled }}
{{ range $address := $all.Cfg.BindAddressIpv6 }}
{{ if not (empty $server.SSLCert.PemFileName) }}listen {{ $address }}:{{ if $all.IsSSLPassthroughEnabled }}{{ $all.ListenPorts.SSLProxy }} proxy_protocol{{ else }}{{ $all.ListenPorts.HTTPS }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ end }}{{ end }} {{ if eq $server.Hostname "_"}} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }}{{end}} ssl {{ if $all.Cfg.UseHTTP2 }}http2{{ end }};
{{ else }}
{{ if not (empty $server.SSLCert.PemFileName) }}listen [::]:{{ if $all.IsSSLPassthroughEnabled }}{{ $all.ListenPorts.SSLProxy }} proxy_protocol{{ else }}{{ $all.ListenPorts.HTTPS }}{{ if $all.Cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ end }}{{ end }} {{ if eq $server.Hostname "_"}} default_server {{ if $all.Cfg.ReusePort }}reuseport{{ end }} backlog={{ $all.BacklogSize }}{{end}} ssl {{ if $all.Cfg.UseHTTP2 }}http2{{ end }};
{{ end }}
{{ end }}
{{/* comment PEM sha is required to detect changes in the generated configuration and force a reload */}}
# PEM sha: {{ $server.SSLCert.PemSHA }}
ssl_certificate {{ $server.SSLCert.PemFileName }};
ssl_certificate_key {{ $server.SSLCert.PemFileName }};
{{ if $all.EnableDynamicCertificates}}
ssl_certificate_by_lua_block {
certificate.call()
}
{{ end }}
{{ end }}
{{ if not (empty $server.AuthTLSError) }}
# {{ $server.AuthTLSError }}
return 403;
{{ else }}
{{ if not (empty $server.CertificateAuth.CAFileName) }}
# PEM sha: {{ $server.CertificateAuth.PemSHA }}
ssl_client_certificate {{ $server.CertificateAuth.CAFileName }};
ssl_verify_client {{ $server.CertificateAuth.VerifyClient }};
ssl_verify_depth {{ $server.CertificateAuth.ValidationDepth }};
{{ if not (empty $server.CertificateAuth.ErrorPage)}}
error_page 495 496 = {{ $server.CertificateAuth.ErrorPage }};
{{ end }}
{{ end }}
{{ if not (empty $server.SSLCiphers) }}
ssl_ciphers {{ $server.SSLCiphers }};
{{ end }}
{{ if not (empty $server.ServerSnippet) }}
{{ $server.ServerSnippet }}
{{ end }}
{{ range $errorLocation := (buildCustomErrorLocationsPerServer $server) }}
{{ template "CUSTOM_ERRORS" (buildCustomErrorDeps $errorLocation.UpstreamName $errorLocation.Codes $all.EnableMetrics) }}
{{ end }}
{{ $enforceRegex := enforceRegexModifier $server.Locations }}
{{ range $location := $server.Locations }}
{{ $path := buildLocation $location $enforceRegex }}
{{ $proxySetHeader := proxySetHeader $location }}
{{ $authPath := buildAuthLocation $location $all.Cfg.GlobalExternalAuth.URL }}
{{ $applyGlobalAuth := shouldApplyGlobalAuth $location $all.Cfg.GlobalExternalAuth.URL }}
{{ $externalAuth := $location.ExternalAuth }}
{{ if eq $applyGlobalAuth true }}
{{ $externalAuth = $all.Cfg.GlobalExternalAuth }}
{{ end }}
{{ if not (empty $location.Rewrite.AppRoot)}}
if ($uri = /) {
return 302 {{ $location.Rewrite.AppRoot }};
}
{{ end }}
{{ if $authPath }}
location = {{ $authPath }} {
internal;
# ngx_auth_request module overrides variables in the parent request,
# therefore we have to explicitly set this variable again so that when the parent request
# resumes it has the correct value set for this variable so that Lua can pick backend correctly
set $proxy_upstream_name "{{ buildUpstreamName $location }}";
proxy_pass_request_body off;
proxy_set_header Content-Length "";
proxy_set_header X-Forwarded-Proto "";
{{ if $externalAuth.Method }}
proxy_method {{ $externalAuth.Method }};
proxy_set_header X-Original-URI $request_uri;
proxy_set_header X-Scheme $pass_access_scheme;
{{ end }}
proxy_set_header Host {{ $externalAuth.Host }};
proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
proxy_set_header X-Original-Method $request_method;
proxy_set_header X-Sent-From "nginx-ingress-controller";
proxy_set_header X-Real-IP $the_real_ip;
{{ if and $all.Cfg.UseForwardedHeaders $all.Cfg.ComputeFullForwardedFor }}
proxy_set_header X-Forwarded-For $full_x_forwarded_for;
{{ else }}
proxy_set_header X-Forwarded-For $the_real_ip;
{{ end }}
{{ if $externalAuth.RequestRedirect }}
proxy_set_header X-Auth-Request-Redirect {{ $externalAuth.RequestRedirect }};
{{ else }}
proxy_set_header X-Auth-Request-Redirect $request_uri;
{{ end }}
proxy_buffering {{ $location.Proxy.ProxyBuffering }};
proxy_buffer_size {{ $location.Proxy.BufferSize }};
proxy_buffers {{ $location.Proxy.BuffersNumber }} {{ $location.Proxy.BufferSize }};
proxy_request_buffering {{ $location.Proxy.RequestBuffering }};
proxy_http_version {{ $location.Proxy.ProxyHTTPVersion }};
proxy_ssl_server_name on;
proxy_pass_request_headers on;
{{ if isValidByteSize $location.Proxy.BodySize true }}
client_max_body_size {{ $location.Proxy.BodySize }};
{{ end }}
{{ if isValidByteSize $location.ClientBodyBufferSize false }}
client_body_buffer_size {{ $location.ClientBodyBufferSize }};
{{ end }}
# Pass the extracted client certificate to the auth provider
{{ if not (empty $server.CertificateAuth.CAFileName) }}
{{ if $server.CertificateAuth.PassCertToUpstream }}
proxy_set_header ssl-client-cert $ssl_client_escaped_cert;
{{ end }}
proxy_set_header ssl-client-verify $ssl_client_verify;
proxy_set_header ssl-client-subject-dn $ssl_client_s_dn;
proxy_set_header ssl-client-issuer-dn $ssl_client_i_dn;
{{ end }}
{{ if not (empty $externalAuth.AuthSnippet) }}
{{ $externalAuth.AuthSnippet }}
{{ end }}
set $target {{ $externalAuth.URL }};
proxy_pass $target;
}
{{ end }}
location {{ $path }} {
{{ $ing := (getIngressInformation $location.Ingress $server.Hostname $location.Path) }}
set $namespace "{{ $ing.Namespace }}";
set $ingress_name "{{ $ing.Rule }}";
set $service_name "{{ $ing.Service }}";
set $service_port "{{ $location.Port }}";
set $location_path "{{ $location.Path | escapeLiteralDollar }}";
{{ if $all.Cfg.EnableOpentracing }}
{{ opentracingPropagateContext $location }};
{{ end }}
rewrite_by_lua_block {
lua_ingress.rewrite({{ locationConfigForLua $location $server $all }})
balancer.rewrite()
plugins.run()
}
{{ if shouldConfigureLuaRestyWAF $all.Cfg.DisableLuaRestyWAF $location.LuaRestyWAF.Mode }}
# be careful with `access_by_lua_block` and `satisfy any` directives as satisfy any
# will always succeed when there's `access_by_lua_block` that does not have any lua code doing `ngx.exit(ngx.DECLINED)`
# that means currently `satisfy any` and lua-resty-waf together will potentiall render any
# other authentication method such as basic auth or external auth useless - all requests will be allowed.
access_by_lua_block {
local lua_resty_waf = require("resty.waf")
local waf = lua_resty_waf:new()
waf:set_option("mode", "{{ $location.LuaRestyWAF.Mode }}")
waf:set_option("storage_zone", "waf_storage")
{{ if $location.LuaRestyWAF.AllowUnknownContentTypes }}
waf:set_option("allow_unknown_content_types", true)
{{ else }}
waf:set_option("allowed_content_types", { "text/html", "text/json", "application/json" })
{{ end }}