forked from kubernetes/ingress-nginx
/
nginx.tmpl
1600 lines (1324 loc) · 61.5 KB
/
nginx.tmpl
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
{{ $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 $cfg.EnableBrotli }}
load_module /etc/nginx/modules/ngx_http_brotli_filter_module.so;
load_module /etc/nginx/modules/ngx_http_brotli_static_module.so;
{{ end }}
{{ if (shouldLoadAuthDigestModule $servers) }}
load_module /etc/nginx/modules/ngx_http_auth_digest_module.so;
{{ end }}
{{ if (shouldLoadModSecurityModule $cfg $servers) }}
load_module /etc/nginx/modules/ngx_http_modsecurity_module.so;
{{ end }}
{{ if (shouldLoadOpentelemetryModule $cfg $servers) }}
load_module /etc/nginx/modules/otel_ngx_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;
{{ range $index , $v := $cfg.DebugConnections }}
debug_connection {{ $v }};
{{ end }}
}
http {
{{ if (shouldLoadOpentelemetryModule $cfg $servers) }}
opentelemetry_config {{ $cfg.OpentelemetryConfig }};
{{ end }}
lua_package_path "/etc/nginx/lua/?.lua;;";
{{ 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
configuration.prohibited_localhost_port = '{{ .StatusPort }}'
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()
}
{{/* 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 (or $cfg.UseForwardedHeaders $cfg.UseProxyProtocol) $cfg.EnableRealIP }}
{{ 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;
{{ if (not (empty $all.Cfg.ModsecuritySnippet)) }}
modsecurity_rules '
{{ $all.Cfg.ModsecuritySnippet }}
';
{{ else }}
modsecurity_rules_file /etc/nginx/modsecurity/modsecurity.conf;
{{ end }}
{{ if $all.Cfg.EnableOWASPCoreRules }}
modsecurity_rules_file /etc/nginx/owasp-modsecurity-crs/nginx-modsecurity.conf;
{{ end }}
{{ end }}
{{ if $cfg.UseGeoIP2 }}
# https://github.com/leev/ngx_http_geoip2_module#example-usage
{{ range $index, $file := $all.MaxmindEditionFiles }}
{{ if eq $file "GeoLite2-Country.mmdb" }}
geoip2 /etc/ingress-controller/geoip/GeoLite2-Country.mmdb {
{{ if (gt $cfg.GeoIP2AutoReloadMinutes 0) }}
auto_reload {{ $cfg.GeoIP2AutoReloadMinutes }}m;
{{ end }}
$geoip2_country_code source=$remote_addr country iso_code;
$geoip2_country_name source=$remote_addr country names en;
$geoip2_country_geoname_id source=$remote_addr country geoname_id;
$geoip2_continent_code source=$remote_addr continent code;
$geoip2_continent_name source=$remote_addr continent names en;
$geoip2_continent_geoname_id source=$remote_addr continent geoname_id;
}
{{ end }}
{{ if eq $file "GeoIP2-Country.mmdb" }}
geoip2 /etc/ingress-controller/geoip/GeoIP2-Country.mmdb {
{{ if (gt $cfg.GeoIP2AutoReloadMinutes 0) }}
auto_reload {{ $cfg.GeoIP2AutoReloadMinutes }}m;
{{ end }}
$geoip2_country_code source=$remote_addr country iso_code;
$geoip2_country_name source=$remote_addr country names en;
$geoip2_country_geoname_id source=$remote_addr country geoname_id;
$geoip2_continent_code source=$remote_addr continent code;
$geoip2_continent_name source=$remote_addr continent names en;
$geoip2_continent_geoname_id source=$remote_addr continent geoname_id;
}
{{ end }}
{{ if eq $file "GeoLite2-City.mmdb" }}
geoip2 /etc/ingress-controller/geoip/GeoLite2-City.mmdb {
{{ if (gt $cfg.GeoIP2AutoReloadMinutes 0) }}
auto_reload {{ $cfg.GeoIP2AutoReloadMinutes }}m;
{{ end }}
$geoip2_city_country_code source=$remote_addr country iso_code;
$geoip2_city_country_name source=$remote_addr country names en;
$geoip2_city_country_geoname_id source=$remote_addr country geoname_id;
$geoip2_city source=$remote_addr city names en;
$geoip2_city_geoname_id source=$remote_addr city geoname_id;
$geoip2_postal_code source=$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;
$geoip2_region_geoname_id source=$remote_addr subdivisions 0 geoname_id;
$geoip2_subregion_code source=$remote_addr subdivisions 1 iso_code;
$geoip2_subregion_name source=$remote_addr subdivisions 1 names en;
$geoip2_subregion_geoname_id source=$remote_addr subdivisions 1 geoname_id;
$geoip2_city_continent_code source=$remote_addr continent code;
$geoip2_city_continent_name source=$remote_addr continent names en;
}
{{ end }}
{{ if eq $file "GeoIP2-City.mmdb" }}
geoip2 /etc/ingress-controller/geoip/GeoIP2-City.mmdb {
{{ if (gt $cfg.GeoIP2AutoReloadMinutes 0) }}
auto_reload {{ $cfg.GeoIP2AutoReloadMinutes }}m;
{{ end }}
$geoip2_city_country_code source=$remote_addr country iso_code;
$geoip2_city_country_name source=$remote_addr country names en;
$geoip2_city_country_geoname_id source=$remote_addr country geoname_id;
$geoip2_city source=$remote_addr city names en;
$geoip2_city_geoname_id source=$remote_addr city geoname_id;
$geoip2_postal_code source=$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;
$geoip2_region_geoname_id source=$remote_addr subdivisions 0 geoname_id;
$geoip2_subregion_code source=$remote_addr subdivisions 1 iso_code;
$geoip2_subregion_name source=$remote_addr subdivisions 1 names en;
$geoip2_subregion_geoname_id source=$remote_addr subdivisions 1 geoname_id;
$geoip2_city_continent_code source=$remote_addr continent code;
$geoip2_city_continent_name source=$remote_addr continent names en;
}
{{ end }}
{{ if eq $file "GeoLite2-ASN.mmdb" }}
geoip2 /etc/ingress-controller/geoip/GeoLite2-ASN.mmdb {
{{ if (gt $cfg.GeoIP2AutoReloadMinutes 0) }}
auto_reload {{ $cfg.GeoIP2AutoReloadMinutes }}m;
{{ end }}
$geoip2_asn source=$remote_addr autonomous_system_number;
$geoip2_org source=$remote_addr autonomous_system_organization;
}
{{ end }}
{{ if eq $file "GeoIP2-ASN.mmdb" }}
geoip2 /etc/ingress-controller/geoip/GeoIP2-ASN.mmdb {
{{ if (gt $cfg.GeoIP2AutoReloadMinutes 0) }}
auto_reload {{ $cfg.GeoIP2AutoReloadMinutes }}m;
{{ end }}
$geoip2_asn source=$remote_addr autonomous_system_number;
$geoip2_org source=$remote_addr autonomous_system_organization;
}
{{ end }}
{{ if eq $file "GeoIP2-ISP.mmdb" }}
geoip2 /etc/ingress-controller/geoip/GeoIP2-ISP.mmdb {
{{ if (gt $cfg.GeoIP2AutoReloadMinutes 0) }}
auto_reload {{ $cfg.GeoIP2AutoReloadMinutes }}m;
{{ end }}
$geoip2_isp source=$remote_addr isp;
$geoip2_isp_org source=$remote_addr organization;
$geoip2_asn source=$remote_addr default=0 autonomous_system_number;
}
{{ end }}
{{ if eq $file "GeoIP2-Connection-Type.mmdb" }}
geoip2 /etc/ingress-controller/geoip/GeoIP2-Connection-Type.mmdb {
$geoip2_connection_type connection_type;
}
{{ end }}
{{ if eq $file "GeoIP2-Anonymous-IP.mmdb" }}
geoip2 /etc/ingress-controller/geoip/GeoIP2-Anonymous-IP.mmdb {
{{ if (gt $cfg.GeoIP2AutoReloadMinutes 0) }}
auto_reload {{ $cfg.GeoIP2AutoReloadMinutes }}m;
{{ end }}
$geoip2_is_anon source=$remote_addr is_anonymous;
$geoip2_is_anonymous source=$remote_addr default=0 is_anonymous;
$geoip2_is_anonymous_vpn source=$remote_addr default=0 is_anonymous_vpn;
$geoip2_is_hosting_provider source=$remote_addr default=0 is_hosting_provider;
$geoip2_is_public_proxy source=$remote_addr default=0 is_public_proxy;
$geoip2_is_tor_exit_node source=$remote_addr default=0 is_tor_exit_node;
}
{{ end }}
{{ end }}
{{ end }}
aio threads;
{{ if $cfg.EnableAioWrite }}
aio_write on;
{{ end }}
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/nginx/client-body;
fastcgi_temp_path /tmp/nginx/fastcgi-temp;
proxy_temp_path /tmp/nginx/proxy-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;
{{ if gt $cfg.GRPCBufferSizeKb 0 }}
grpc_buffer_size {{ $cfg.GRPCBufferSizeKb }}k;
{{ end }}
{{ if and (ne $cfg.HTTP2MaxHeaderSize "") (ne $cfg.HTTP2MaxFieldSize "") }}
http2_max_field_size {{ $cfg.HTTP2MaxFieldSize }};
http2_max_header_size {{ $cfg.HTTP2MaxHeaderSize }};
{{ end }}
{{ if (gt $cfg.HTTP2MaxRequests 0) }}
http2_max_requests {{ $cfg.HTTP2MaxRequests }};
{{ end }}
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 }};
{{ buildOpentelemetry $cfg $servers }}
include /etc/nginx/mime.types;
default_type {{ $cfg.DefaultType }};
{{ if $cfg.EnableBrotli }}
brotli on;
brotli_comp_level {{ $cfg.BrotliLevel }};
brotli_min_length {{ $cfg.BrotliMinLength }};
brotli_types {{ $cfg.BrotliTypes }};
{{ end }}
{{ if $cfg.UseGzip }}
gzip on;
gzip_comp_level {{ $cfg.GzipLevel }};
{{- if $cfg.GzipDisable }}
gzip_disable "{{ $cfg.GzipDisable }}";
{{- end }}
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.LogFormatEscapeNone }}escape=none {{ else 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 or $cfg.DisableAccessLog $cfg.DisableHTTPAccessLog }}
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 }}
# 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 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/ingress-controller/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 and $cfg.CustomHTTPErrors (not $cfg.DisableProxyInterceptErrors) }}
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_time {{ $cfg.UpstreamKeepaliveTime }};
keepalive_timeout {{ $cfg.UpstreamKeepaliveTimeout }}s;
keepalive_requests {{ $cfg.UpstreamKeepaliveRequests }};
{{ end }}
}
{{ range $rl := (filterRateLimits $servers ) }}
# Ratelimit {{ $rl.Name }}
geo $remote_addr $allowlist_{{ $rl.ID }} {
default 0;
{{ range $ip := $rl.Allowlist }}
{{ $ip }} 1;{{ end }}
}
# Ratelimit {{ $rl.Name }}
map $allowlist_{{ $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/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 }}
set_by_lua_block $redirect_to {
local request_uri = ngx.var.request_uri
if string.sub(request_uri, -1) == "/" then
request_uri = string.sub(request_uri, 1, -2)
end
{{ if $cfg.UseForwardedHeaders }}
local redirectScheme
if not ngx.var.http_x_forwarded_proto then
redirectScheme = ngx.var.scheme
else
redirectScheme = ngx.var.http_x_forwarded_proto
end
{{ else }}
local redirectScheme = ngx.var.scheme
{{ end }}
{{ if ne $all.ListenPorts.HTTPS 443 }}
{{ $redirect_port := (printf ":%v" $all.ListenPorts.HTTPS) }}
return string.format("%s://%s%s%s", redirectScheme, "{{ $redirect.To }}", "{{ $redirect_port }}", request_uri)
{{ else }}
return string.format("%s://%s%s", redirectScheme, "{{ $redirect.To }}", request_uri)
{{ end }}
}
return {{ $all.Cfg.HTTPRedirectCode }} $redirect_to;
}
## end server {{ $redirect.From }}
{{ end }}
{{ range $server := $servers }}
{{ range $location := $server.Locations }}
{{ $applyGlobalAuth := shouldApplyGlobalAuth $location $all.Cfg.GlobalExternalAuth.URL }}
{{ $applyAuthUpstream := shouldApplyAuthUpstream $location $all.Cfg }}
{{ if and (eq $applyAuthUpstream true) (eq $applyGlobalAuth false) }}
## start auth upstream {{ $server.Hostname }}{{ $location.Path }}
upstream {{ buildAuthUpstreamName $location $server.Hostname }} {
{{- $externalAuth := $location.ExternalAuth }}
server {{ extractHostPort $externalAuth.URL }};
keepalive {{ $externalAuth.KeepaliveConnections }};
keepalive_requests {{ $externalAuth.KeepaliveRequests }};
keepalive_timeout {{ $externalAuth.KeepaliveTimeout }}s;
}
## end auth upstream {{ $server.Hostname }}{{ $location.Path }}
{{ end }}
{{ end }}
{{ end }}
{{ range $server := $servers }}
## start server {{ $server.Hostname }}
server {
server_name {{ buildServerName $server.Hostname }} {{range $server.Aliases }}{{ . }} {{ end }};
{{ if $cfg.UseHTTP2 }}
http2 on;
{{ 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 $cfg.EnableModsecurity) }}
}
## 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 {
# Ensure that modsecurity will not run on an internal location as this is not accessible from outside
{{ if $all.Cfg.EnableModsecurity }}
modsecurity off;
{{ end }}
listen 127.0.0.1:{{ .StatusPort }};
set $proxy_upstream_name "internal";
keepalive_timeout 0;
gzip off;
access_log off;
{{ if $cfg.EnableOpentelemetry }}
opentelemetry 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 }};
client_body_buffer_size {{ luaConfigurationRequestBodySize $cfg }};
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;
{{ buildResolvers $cfg.Resolver $cfg.DisableIpv6DNS }}
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
tcp_udp_configuration.prohibited_localhost_port = '{{ .StatusPort }}'
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 or $cfg.DisableAccessLog $cfg.DisableStreamAccessLog }}
access_log off;
{{ else }}
access_log {{ or $cfg.StreamAccessLogPath $cfg.AccessLogPath }} log_stream {{ $cfg.AccessLogParams }};
{{ end }}
error_log {{ $cfg.ErrorLogPath }} {{ $cfg.ErrorLogLevel }};
{{ if $cfg.EnableRealIP }}
{{ range $trusted_ip := $cfg.ProxyRealIPCIDR }}
set_real_ip_from {{ $trusted_ip }};
{{ end }}
{{ end }}
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_next_upstream {{ if $cfg.ProxyStreamNextUpstream }}on{{ else }}off{{ end }};
proxy_next_upstream_timeout {{ $cfg.ProxyStreamNextUpstreamTimeout }};
proxy_next_upstream_tries {{ $cfg.ProxyStreamNextUpstreamTries }};
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_next_upstream {{ if $cfg.ProxyStreamNextUpstream }}on{{ else }}off{{ end }};
proxy_next_upstream_timeout {{ $cfg.ProxyStreamNextUpstreamTimeout }};
proxy_next_upstream_tries {{ $cfg.ProxyStreamNextUpstreamTries }};
proxy_pass upstream_balancer;
}
{{ end }}
# Stream Snippets
{{ range $snippet := .StreamSnippets }}
{{ $snippet }}
{{ end }}
}
{{/* definition of templates to avoid repetitions */}}
{{ define "CUSTOM_ERRORS" }}
{{ $enableMetrics := .EnableMetrics }}
{{ $modsecurityEnabled := .ModsecurityEnabled }}
{{ $upstreamName := .UpstreamName }}
{{ range $errCode := .ErrorCodes }}
location @custom_{{ $upstreamName }}_{{ $errCode }} {
internal;
# Ensure that modsecurity will not run on custom error pages or they might be blocked
{{ if $modsecurityEnabled }}
modsecurity off;
{{ end }}
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 X-Forwarded-For $remote_addr;
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 $cors.CorsAllowOrigin }}
{{ buildCorsOriginRegex $cors.CorsAllowOrigin }}
{{ end }}
if ($request_method = 'OPTIONS') {
set $cors ${cors}options;
}
if ($cors = "true") {
more_set_headers 'Access-Control-Allow-Origin: $http_origin';
{{ 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 }}';
{{ if not (empty $cors.CorsExposeHeaders) }} more_set_headers 'Access-Control-Expose-Headers: {{ $cors.CorsExposeHeaders }}'; {{ end }}
more_set_headers 'Access-Control-Max-Age: {{ $cors.CorsMaxAge }}';
}
if ($cors = "trueoptions") {
more_set_headers 'Access-Control-Allow-Origin: $http_origin';
{{ 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 }}';
{{ if not (empty $cors.CorsExposeHeaders) }} more_set_headers 'Access-Control-Expose-Headers: {{ $cors.CorsExposeHeaders }}'; {{ end }}
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;