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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 (shouldLoadOpentracingModule $cfg $servers) }}
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 }}
# Skywalking ENV
env SW_SERVICE_NAME;
env SW_SERVICE_INSTANCE_NAME;
env SW_BACKEND_SERVERS;
events {
multi_accept {{ if $cfg.EnableMultiAccept }}on{{ else }}off{{ end }};
worker_connections {{ $cfg.MaxWorkerConnections }};
use epoll;
}
http {
lua_package_path "/etc/nginx/lua/?.lua;/etc/nginx/lua/skywalking/?.lua;;";
lua_shared_dict tracing_buffer 100m;
{{ buildLuaSharedDictionaries $cfg $servers }}
init_by_lua_block {
collectgarbage("collect")
-- 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
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 }}
ok, res = pcall(require, "certificate")
if not ok then
error("require failed: " .. tostring(res))
else
certificate = res
certificate.is_ocsp_stapling_enabled = {{ $cfg.EnableOCSP }}
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({ {{ range $idx, $plugin := $cfg.Plugins }}{{ if $idx }},{{ end }}{{ $plugin | quote }}{{ end }} })
}
init_worker_by_lua_block {
lua_ingress.init_worker()
balancer.init_worker()
{{ if $all.EnableMetrics }}
monitor.init_worker({{ $all.MonitorMaxBatchSize }})
{{ end }}
plugins.run()
-- Skywalking
local metadata_buffer = ngx.shared.tracing_buffer
metadata_buffer:set('serviceName', os.getenv("SW_SERVICE_NAME"))
metadata_buffer:set('serviceInstanceName', os.getenv("SW_SERVICE_INSTANCE_NAME"))
-- set random seed
require("swutil").set_randomseed()
require("client"):startBackendTimer(os.getenv("SW_BACKEND_SERVERS"))
}
{{/* 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;
{{ else if (not (empty $all.Cfg.ModsecuritySnippet)) }}
modsecurity_rules '
{{ $all.Cfg.ModsecuritySnippet }}
';
{{ 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
{{ range $index, $file := $all.MaxmindEditionFiles }}
{{ if eq $file "GeoLite2-City.mmdb" }}
geoip2 /etc/nginx/geoip/GeoLite2-City.mmdb {
$geoip2_city_country_code source=$remote_addr country iso_code;
$geoip2_city_country_name source=$remote_addr country names en;
$geoip2_city source=$remote_addr city names en;
$geoip2_postal_code source=$remote_addr postal code;
$geoip2_dma_code source=$remote_addr location metro_code;
$geoip2_latitude source=$remote_addr location latitude;
$geoip2_longitude source=$remote_addr location longitude;
$geoip2_time_zone source=$remote_addr location time_zone;
$geoip2_region_code source=$remote_addr subdivisions 0 iso_code;
$geoip2_region_name source=$remote_addr subdivisions 0 names en;
}
{{ end }}
{{ if eq $file "GeoIP2-City.mmdb" }}
geoip2 /etc/nginx/geoip/GeoIP2-City.mmdb {
$geoip2_city_country_code source=$remote_addr country iso_code;
$geoip2_city_country_name source=$remote_addr country names en;
$geoip2_city source=$remote_addr city names en;
$geoip2_postal_code source=$remote_addr postal code;
$geoip2_dma_code source=$remote_addr location metro_code;
$geoip2_latitude source=$remote_addr location latitude;
$geoip2_longitude source=$remote_addr location longitude;
$geoip2_time_zone source=$remote_addr location time_zone;
$geoip2_region_code source=$remote_addr subdivisions 0 iso_code;
$geoip2_region_name source=$remote_addr subdivisions 0 names en;
}
{{ end }}
{{ if eq $file "GeoLite2-ASN.mmdb" }}
geoip2 /etc/nginx/geoip/GeoLite2-ASN.mmdb {
$geoip2_asn source=$remote_addr autonomous_system_number;
$geoip2_org source=$remote_addr autonomous_system_organization;
}
{{ end }}
{{ if eq $file "GeoIP2-ASN.mmdb" }}
geoip2 /etc/nginx/geoip/GeoIP2-ASN.mmdb {
$geoip2_asn source=$remote_addr autonomous_system_number;
$geoip2_org source=$remote_addr autonomous_system_organization;
}
{{ end }}
{{ if eq $file "GeoIP2-ISP.mmdb" }}
geoip2 /etc/nginx/geoip/GeoIP2-ISP.mmdb {
$geoip2_isp isp;
$geoip2_isp_org organization;
}
{{ end }}
{{ if eq $file "GeoIP2-Connection-Type.mmdb" }}
geoip2 /etc/nginx/geoip/GeoIP2-Connection-Type.mmdb {
$geoip2_connection_type connection_type;
}
{{ end }}
{{ if eq $file "GeoIP2-Anonymous-IP.mmdb" }}
geoip2 /etc/nginx/geoip/GeoIP2-Anonymous-IP.mmdb {
$geoip2_is_anon source=$remote_addr is_anonymous;
$geoip2_is_hosting_provider source=$remote_addr is_hosting_provider;
$geoip2_is_public_proxy source=$remote_addr is_public_proxy;
}
{{ end }}
{{ end }}
{{ 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 }};
http2_max_concurrent_streams {{ $cfg.HTTP2MaxConcurrentStreams }};
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 }};
{{ buildOpentracing $cfg $servers }}
include /etc/nginx/mime.types;
default_type {{ $cfg.DefaultType }};
{{ 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 {{ $cfg.GzipMinLength}};
gzip_types {{ $cfg.GzipTypes }};
gzip_proxied any;
gzip_vary on;
{{ end }}
# Custom headers for response
{{ range $k, $v := $addHeaders }}
more_set_headers {{ printf "%s: %s" $k $v | quote }};
{{ 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 }}'{{ $cfg.LogFormatUpstream }}';
{{/* 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 {{ or $cfg.HttpAccessLogPath $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 }}
}
# 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 }}
{{ if $cfg.UseForwardedHeaders }}
map $http_x_forwarded_proto $full_x_forwarded_proto {
default $http_x_forwarded_proto;
"" $scheme;
}
{{ 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 }};
ssl_early_data {{ if $cfg.SSLEarlyData }}on{{ else }}off{{ end }};
# 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 }}
ssl_ecdh_curve {{ $cfg.SSLECDHCurve }};
# PEM sha: {{ $cfg.DefaultSSLCertificate.PemSHA }}
ssl_certificate {{ $cfg.DefaultSSLCertificate.PemFileName }};
ssl_certificate_key {{ $cfg.DefaultSSLCertificate.PemFileName }};
{{ 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 {
### Attention!!!
#
# We no longer create "upstream" section for every backend.
# Backends are handled dynamically using Lua. If you would like to debug
# and see what backends ingress-nginx has in its memory you can
# install our kubectl plugin https://kubernetes.github.io/ingress-nginx/kubectl-plugin.
# Once you have the plugin you can use "kubectl ingress-nginx backends" command to
# inspect current backends.
#
###
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 $remote_addr $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 }}
# Cache for internal auth checks
proxy_cache_path /tmp/nginx-cache-auth levels=1:2 keys_zone=auth_cache:10m max_size=128m inactive=30m use_temp_path=off;
# 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 {
server_name {{ $redirect.From }};
{{ buildHTTPListener $all $redirect.From }}
{{ buildHTTPSListener $all $redirect.From }}
ssl_certificate_by_lua_block {
certificate.call()
}
{{ 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 }} {{range $server.Aliases }}{{ . }} {{ 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 }}
{{ 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 127.0.0.1:{{ .StatusPort }};
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 {
client_max_body_size {{ luaConfigurationRequestBodySize $cfg }}m;
client_body_buffer_size {{ luaConfigurationRequestBodySize $cfg }}m;
proxy_buffering off;
content_by_lua_block {
configuration.call()
}
}
location / {
content_by_lua_block {
ngx.exit(ngx.HTTP_NOT_FOUND)
}
}
}
}
stream {
lua_package_path "/etc/nginx/lua/?.lua;/etc/nginx/lua/vendor/?.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
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 {{ or $cfg.StreamAccessLogPath $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 127.0.0.1:{{ .StreamPort }};
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 | quote }};
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 }}
{{ buildHTTPListener $all $server.Hostname }}
{{ buildHTTPSListener $all $server.Hostname }}
set $proxy_upstream_name "-";
ssl_certificate_by_lua_block {
certificate.call()
}
{{ if not (empty $server.AuthTLSError) }}
# {{ $server.AuthTLSError }}
return 403;
{{ else }}
{{ if not (empty $server.CertificateAuth.CAFileName) }}
# PEM sha: {{ $server.CertificateAuth.CASHA }}
ssl_client_certificate {{ $server.CertificateAuth.CAFileName }};
ssl_verify_client {{ $server.CertificateAuth.VerifyClient }};
ssl_verify_depth {{ $server.CertificateAuth.ValidationDepth }};
{{ if not (empty $server.CertificateAuth.CRLFileName) }}
# PEM sha: {{ $server.CertificateAuth.CRLSHA }}
ssl_crl {{ $server.CertificateAuth.CRLFileName }};
{{ end }}
{{ if not (empty $server.CertificateAuth.ErrorPage)}}
error_page 495 496 = {{ $server.CertificateAuth.ErrorPage }};
{{ end }}
{{ end }}
{{ if not (empty $server.ProxySSL.CAFileName) }}
# PEM sha: {{ $server.ProxySSL.CASHA }}
proxy_ssl_trusted_certificate {{ $server.ProxySSL.CAFileName }};
proxy_ssl_ciphers {{ $server.ProxySSL.Ciphers }};
proxy_ssl_protocols {{ $server.ProxySSL.Protocols }};
proxy_ssl_verify {{ $server.ProxySSL.Verify }};
proxy_ssl_verify_depth {{ $server.ProxySSL.VerifyDepth }};
{{ if not (empty $server.ProxySSL.ProxySSLName) }}
proxy_ssl_name {{ $server.ProxySSL.ProxySSLName }};
proxy_ssl_server_name {{ $server.ProxySSL.ProxySSLServerName }};
{{ end }}
{{ end }}
{{ if not (empty $server.ProxySSL.PemFileName) }}
proxy_ssl_certificate {{ $server.ProxySSL.PemFileName }};
proxy_ssl_certificate_key {{ $server.ProxySSL.PemFileName }};
{{ end }}
{{ if not (empty $server.SSLCiphers) }}
ssl_ciphers {{ $server.SSLCiphers }};
{{ end }}
{{ if not (empty $server.SSLPreferServerCiphers) }}
ssl_prefer_server_ciphers {{ $server.SSLPreferServerCiphers }};
{{ end }}
{{ if not (empty $server.ServerSnippet) }}
{{ $server.ServerSnippet }}
{{ end }}
{{ range $errorLocation := (buildCustomErrorLocationsPerServer $server) }}
{{ template "CUSTOM_ERRORS" (buildCustomErrorDeps $errorLocation.UpstreamName $errorLocation.Codes $all.EnableMetrics) }}
{{ end }}
{{ buildMirrorLocations $server.Locations }}
{{ $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 $scheme://$http_host{{ $location.Rewrite.AppRoot }};
}
{{ end }}
{{ if $authPath }}
location = {{ $authPath }} {
internal;
{{ if $all.Cfg.EnableOpentracing }}
opentracing on;
opentracing_propagate_context;
{{ end }}
{{ if $externalAuth.AuthCacheKey }}
set $tmp_cache_key '{{ $server.Hostname }}{{ $authPath }}{{ $externalAuth.AuthCacheKey }}';
set $cache_key '';
rewrite_by_lua_block {
ngx.var.cache_key = ngx.encode_base64(ngx.sha1_bin(ngx.var.tmp_cache_key))
}
proxy_cache auth_cache;
{{- range $dur := $externalAuth.AuthCacheDuration }}
proxy_cache_valid {{ $dur }};
{{- end }}
proxy_cache_key "$cache_key";
{{ end }}
# 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 | quote }};
proxy_pass_request_body off;
proxy_set_header Content-Length "";
proxy_set_header X-Forwarded-Proto "";
proxy_set_header X-Request-ID $req_id;
{{ 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 $remote_addr;
{{ 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 $remote_addr;
{{ end }}
{{ if $externalAuth.RequestRedirect }}
proxy_set_header X-Auth-Request-Redirect {{ $externalAuth.RequestRedirect }};
{{ else }}
proxy_set_header X-Auth-Request-Redirect $request_uri;
{{ end }}
{{ if $externalAuth.AuthCacheKey }}
proxy_buffering "on";