627 lines
24 KiB
Cheetah
627 lines
24 KiB
Cheetah
{{ $cfg := .Cfg }}
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{{ $IsIPV6Enabled := .IsIPV6Enabled }}
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{{ $healthzURI := .HealthzURI }}
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{{ $backends := .Backends }}
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{{ $proxyHeaders := .ProxySetHeaders }}
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daemon off;
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worker_processes {{ $cfg.WorkerProcesses }};
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pid /run/nginx.pid;
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{{ if ne .MaxOpenFiles 0 }}
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worker_rlimit_nofile {{ .MaxOpenFiles }};
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{{ end}}
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events {
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multi_accept on;
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worker_connections {{ $cfg.MaxWorkerConnections }};
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use epoll;
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}
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http {
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{{/* we use the value of the header X-Forwarded-For to be able to use the geo_ip module */}}
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{{ if $cfg.UseProxyProtocol }}
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set_real_ip_from {{ $cfg.ProxyRealIPCIDR }};
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real_ip_header proxy_protocol;
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{{ else }}
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set_real_ip_from {{ $cfg.ProxyRealIPCIDR }};
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real_ip_header X-Forwarded-For;
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{{ end }}
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real_ip_recursive on;
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{{/* databases used to determine the country depending on the client IP address */}}
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{{/* http://nginx.org/en/docs/http/ngx_http_geoip_module.html */}}
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{{/* this is require to calculate traffic for individual country using GeoIP in the status page */}}
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geoip_country /etc/nginx/GeoIP.dat;
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geoip_city /etc/nginx/GeoLiteCity.dat;
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geoip_proxy_recursive on;
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{{ if $cfg.EnableVtsStatus }}
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vhost_traffic_status_zone shared:vhost_traffic_status:{{ $cfg.VtsStatusZoneSize }};
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vhost_traffic_status_filter_by_set_key $geoip_country_code country::*;
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{{ end }}
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# lua section to return proper error codes when custom pages are used
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lua_package_path '.?.lua;/etc/nginx/lua/?.lua;/etc/nginx/lua/vendor/lua-resty-http/lib/?.lua;';
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init_by_lua_block {
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require("error_page")
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}
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sendfile on;
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aio threads;
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tcp_nopush on;
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tcp_nodelay on;
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log_subrequest on;
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reset_timedout_connection on;
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keepalive_timeout {{ $cfg.KeepAlive }}s;
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keepalive_requests {{ $cfg.KeepAliveRequests }};
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client_header_buffer_size {{ $cfg.ClientHeaderBufferSize }};
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large_client_header_buffers {{ $cfg.LargeClientHeaderBuffers }};
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client_body_buffer_size {{ $cfg.ClientBodyBufferSize }};
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http2_max_field_size {{ $cfg.HTTP2MaxFieldSize }};
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http2_max_header_size {{ $cfg.HTTP2MaxHeaderSize }};
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types_hash_max_size 2048;
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server_names_hash_max_size {{ $cfg.ServerNameHashMaxSize }};
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server_names_hash_bucket_size {{ $cfg.ServerNameHashBucketSize }};
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map_hash_bucket_size {{ $cfg.MapHashBucketSize }};
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variables_hash_bucket_size {{ $cfg.VariablesHashBucketSize }};
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variables_hash_max_size {{ $cfg.VariablesHashMaxSize }};
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underscores_in_headers {{ if $cfg.EnableUnderscoresInHeaders }}on{{ else }}off{{ end }};
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ignore_invalid_headers {{ if $cfg.IgnoreInvalidHeaders }}on{{ else }}off{{ end }};
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include /etc/nginx/mime.types;
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default_type text/html;
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{{ if $cfg.UseGzip }}
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gzip on;
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gzip_comp_level 5;
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gzip_http_version 1.1;
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gzip_min_length 256;
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gzip_types {{ $cfg.GzipTypes }};
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gzip_proxied any;
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{{ end }}
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server_tokens {{ if $cfg.ShowServerTokens }}on{{ else }}off{{ end }};
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# disable warnings
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uninitialized_variable_warn off;
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log_format upstreaminfo {{ if $cfg.LogFormatEscapeJson }}escape=json {{ end }}'{{ buildLogFormatUpstream $cfg }}';
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{{/* map urls that should not appear in access.log */}}
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{{/* http://nginx.org/en/docs/http/ngx_http_log_module.html#access_log */}}
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map $request_uri $loggable {
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{{ range $reqUri := $cfg.SkipAccessLogURLs }}
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{{ $reqUri }} 0;{{ end }}
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default 1;
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}
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{{ if $cfg.DisableAccessLog }}
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access_log off;
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{{ else }}
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access_log /var/log/nginx/access.log upstreaminfo if=$loggable;
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{{ end }}
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error_log /var/log/nginx/error.log {{ $cfg.ErrorLogLevel }};
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{{ buildResolvers $cfg.Resolver }}
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{{/* Whenever nginx proxies a request without a "Connection" header, the "Connection" header is set to "close" */}}
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{{/* when making the target request. This means that you cannot simply use */}}
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{{/* "proxy_set_header Connection $http_connection" for WebSocket support because in this case, the */}}
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{{/* "Connection" header would be set to "" whenever the original request did not have a "Connection" header, */}}
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{{/* which would mean no "Connection" header would be in the target request. Since this would deviate from */}}
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{{/* normal nginx behavior we have to use this approach. */}}
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# Retain the default nginx handling of requests without a "Connection" header
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map $http_upgrade $connection_upgrade {
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default upgrade;
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'' close;
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}
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# trust http_x_forwarded_proto headers correctly indicate ssl offloading
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map $http_x_forwarded_proto $pass_access_scheme {
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default $http_x_forwarded_proto;
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'' $scheme;
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}
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map $http_x_forwarded_port $pass_server_port {
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default $http_x_forwarded_port;
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'' $server_port;
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}
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map $pass_access_scheme $the_x_forwarded_for {
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default $remote_addr;
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https $proxy_protocol_addr;
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}
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map $pass_access_scheme $the_real_ip {
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default $remote_addr;
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https $proxy_protocol_addr;
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}
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# map port 442 to 443 for header X-Forwarded-Port
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map $pass_server_port $pass_port {
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442 443;
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default $pass_server_port;
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}
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# Map a response error watching the header Content-Type
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map $http_accept $httpAccept {
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default html;
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application/json json;
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application/xml xml;
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text/plain text;
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}
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map $httpAccept $httpReturnType {
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default text/html;
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json application/json;
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xml application/xml;
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text text/plain;
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}
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# Obtain best http host
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map $http_host $best_http_host {
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default $http_host;
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'' $host;
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}
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server_name_in_redirect off;
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port_in_redirect off;
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ssl_protocols {{ $cfg.SSLProtocols }};
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# turn on session caching to drastically improve performance
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{{ if $cfg.SSLSessionCache }}
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ssl_session_cache builtin:1000 shared:SSL:{{ $cfg.SSLSessionCacheSize }};
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ssl_session_timeout {{ $cfg.SSLSessionTimeout }};
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{{ end }}
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# allow configuring ssl session tickets
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ssl_session_tickets {{ if $cfg.SSLSessionTickets }}on{{ else }}off{{ end }};
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# slightly reduce the time-to-first-byte
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ssl_buffer_size {{ $cfg.SSLBufferSize }};
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{{ if not (empty $cfg.SSLCiphers) }}
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# allow configuring custom ssl ciphers
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ssl_ciphers '{{ $cfg.SSLCiphers }}';
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ssl_prefer_server_ciphers on;
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{{ end }}
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{{ if not (empty $cfg.SSLDHParam) }}
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# allow custom DH file http://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_dhparam
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ssl_dhparam {{ $cfg.SSLDHParam }};
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{{ end }}
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{{ if not $cfg.EnableDynamicTLSRecords }}
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ssl_dyn_rec_size_lo 0;
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{{ end }}
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ssl_ecdh_curve {{ $cfg.SSLECDHCurve }};
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{{ if .CustomErrors }}
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# Custom error pages
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proxy_intercept_errors on;
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{{ end }}
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{{ range $errCode := $cfg.CustomHTTPErrors }}
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error_page {{ $errCode }} = @custom_{{ $errCode }};{{ end }}
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# In case of errors try the next upstream server before returning an error
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proxy_next_upstream error timeout invalid_header http_502 http_503 http_504{{ if $cfg.RetryNonIdempotent }} non_idempotent{{ end }};
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proxy_ssl_session_reuse on;
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{{ if $cfg.AllowBackendServerHeader }}
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proxy_pass_header Server;
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{{ end }}
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{{range $name, $upstream := $backends}}
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upstream {{$upstream.Name}} {
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{{ if eq $upstream.SessionAffinity.AffinityType "cookie" }}
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sticky hash={{$upstream.SessionAffinity.CookieSessionAffinity.Hash}} name={{$upstream.SessionAffinity.CookieSessionAffinity.Name}} httponly;
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{{ else }}
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# Load balance algorithm; empty for round robin, which is the default
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{{ if ne $cfg.LoadBalanceAlgorithm "round_robin" }}
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{{ $cfg.LoadBalanceAlgorithm }};
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{{ end }}
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{{ end }}
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{{ range $server := $upstream.Endpoints }}server {{ $server.Address | formatIP }}:{{ $server.Port }} max_fails={{ $server.MaxFails }} fail_timeout={{ $server.FailTimeout }};
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{{ end }}
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}
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{{ end }}
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{{/* build the maps that will be use to validate the Whitelist */}}
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{{ range $index, $server := .Servers }}
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{{ range $location := $server.Locations }}
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{{ $path := buildLocation $location }}
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{{ if isLocationAllowed $location }}
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{{ if gt (len $location.Whitelist.CIDR) 0 }}
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geo $the_real_ip {{ buildDenyVariable (print $server.Hostname "_" $path) }} {
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default 1;
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{{ range $ip := $location.Whitelist.CIDR }}
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{{ $ip }} 0;{{ end }}
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}
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{{ end }}
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{{ end }}
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{{ end }}
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{{ end }}
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{{/* build all the required rate limit zones. Each annotation requires a dedicated zone */}}
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{{/* 1MB -> 16 thousand 64-byte states or about 8 thousand 128-byte states */}}
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{{ range $zone := (buildRateLimitZones .Servers) }}
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{{ $zone }}
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{{ end }}
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{{ $backlogSize := .BacklogSize }}
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{{ range $index, $server := .Servers }}
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server {
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server_name {{ $server.Hostname }};
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listen 80{{ if $cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ if eq $server.Hostname "_"}} default_server reuseport backlog={{ $backlogSize }}{{end}};
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{{ if $IsIPV6Enabled }}listen [::]:80{{ if $cfg.UseProxyProtocol }} proxy_protocol{{ end }}{{ if eq $server.Hostname "_"}} default_server reuseport backlog={{ $backlogSize }}{{ end }};{{ end }}
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set $proxy_upstream_name "-";
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{{/* Listen on 442 because port 443 is used in the TLS sni server */}}
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{{/* This listener must always have proxy_protocol enabled, because the SNI listener forwards on source IP info in it. */}}
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{{ if not (empty $server.SSLCertificate) }}listen 442 proxy_protocol{{ if eq $server.Hostname "_"}} default_server reuseport backlog={{ $backlogSize }}{{end}} ssl {{ if $cfg.UseHTTP2 }}http2{{ end }};
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{{ if $IsIPV6Enabled }}{{ if not (empty $server.SSLCertificate) }}listen [::]:442 proxy_protocol{{ end }} {{ if eq $server.Hostname "_"}} default_server reuseport backlog={{ $backlogSize }}{{end}} ssl {{ if $cfg.UseHTTP2 }}http2{{ end }};{{ end }}
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{{/* comment PEM sha is required to detect changes in the generated configuration and force a reload */}}
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# PEM sha: {{ $server.SSLPemChecksum }}
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ssl_certificate {{ $server.SSLCertificate }};
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ssl_certificate_key {{ $server.SSLCertificate }};
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{{ end }}
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{{ if (and (not (empty $server.SSLCertificate)) $cfg.HSTS) }}
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more_set_headers "Strict-Transport-Security: max-age={{ $cfg.HSTSMaxAge }}{{ if $cfg.HSTSIncludeSubdomains }}; includeSubDomains{{ end }};{{ if $cfg.HSTSPreload }} preload{{ end }}";
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{{ end }}
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{{ if $cfg.EnableVtsStatus }}vhost_traffic_status_filter_by_set_key $geoip_country_code country::$server_name;{{ end }}
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{{ range $location := $server.Locations }}
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{{ $path := buildLocation $location }}
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{{ $authPath := buildAuthLocation $location }}
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{{ if not (empty $location.CertificateAuth.AuthSSLCert.CAFileName) }}
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# PEM sha: {{ $location.CertificateAuth.AuthSSLCert.PemSHA }}
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ssl_client_certificate {{ $location.CertificateAuth.AuthSSLCert.CAFileName }};
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ssl_verify_client on;
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ssl_verify_depth {{ $location.CertificateAuth.ValidationDepth }};
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{{ end }}
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{{ if (or $location.Redirect.ForceSSLRedirect (and (not (empty $server.SSLCertificate)) $location.Redirect.SSLRedirect)) }}
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# enforce ssl on server side
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if ($pass_access_scheme = http) {
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return 301 https://$best_http_host$request_uri;
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}
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{{ end }}
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{{ if not (empty $location.Redirect.AppRoot)}}
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if ($uri = /) {
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return 302 {{ $location.Redirect.AppRoot }};
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}
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{{ end }}
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{{ if not (empty $authPath) }}
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location = {{ $authPath }} {
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internal;
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set $proxy_upstream_name "internal";
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{{ if not $location.ExternalAuth.SendBody }}
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proxy_pass_request_body off;
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proxy_set_header Content-Length "";
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{{ end }}
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{{ if not (empty $location.ExternalAuth.Method) }}
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proxy_method {{ $location.ExternalAuth.Method }};
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proxy_set_header X-Original-URI $request_uri;
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proxy_set_header X-Scheme $pass_access_scheme;
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{{ end }}
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proxy_pass_request_headers on;
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proxy_set_header Host {{ $location.ExternalAuth.Host }};
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proxy_ssl_server_name on;
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client_max_body_size "{{ $location.Proxy.BodySize }}";
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set $target {{ $location.ExternalAuth.URL }};
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proxy_pass $target;
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}
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{{ end }}
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location {{ $path }} {
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set $proxy_upstream_name "{{ $location.Backend }}";
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{{ if isLocationAllowed $location }}
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{{ if gt (len $location.Whitelist.CIDR) 0 }}
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if ({{ buildDenyVariable (print $server.Hostname "_" $path) }}) {
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return 403;
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}
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{{ end }}
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port_in_redirect {{ if $location.UsePortInRedirects }}on{{ else }}off{{ end }};
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{{ if not (empty $authPath) }}
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# this location requires authentication
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auth_request {{ $authPath }};
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{{- range $idx, $line := buildAuthResponseHeaders $location }}
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{{ $line }}
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{{- end }}
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{{ end }}
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{{ if not (empty $location.ExternalAuth.SigninURL) }}
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error_page 401 = {{ $location.ExternalAuth.SigninURL }};
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{{ end }}
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{{/* if the location contains a rate limit annotation, create one */}}
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{{ $limits := buildRateLimit $location }}
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{{ range $limit := $limits }}
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{{ $limit }}{{ end }}
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{{ if $location.BasicDigestAuth.Secured }}
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{{ if eq $location.BasicDigestAuth.Type "basic" }}
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auth_basic "{{ $location.BasicDigestAuth.Realm }}";
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auth_basic_user_file {{ $location.BasicDigestAuth.File }};
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{{ else }}
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auth_digest "{{ $location.BasicDigestAuth.Realm }}";
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auth_digest_user_file {{ $location.BasicDigestAuth.File }};
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{{ end }}
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proxy_set_header Authorization "";
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{{ end }}
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{{ if $location.EnableCORS }}
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{{ template "CORS" }}
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{{ end }}
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client_max_body_size "{{ $location.Proxy.BodySize }}";
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proxy_set_header Host $best_http_host;
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# Pass the extracted client certificate to the backend
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{{ if not (empty $location.CertificateAuth.AuthSSLCert.CAFileName) }}
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proxy_set_header ssl-client-cert $ssl_client_cert;
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{{ end }}
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# Allow websocket connections
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection $connection_upgrade;
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proxy_set_header X-Real-IP $the_real_ip;
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proxy_set_header X-Forwarded-For $the_x_forwarded_for;
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proxy_set_header X-Forwarded-Host $best_http_host;
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proxy_set_header X-Forwarded-Port $pass_port;
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proxy_set_header X-Forwarded-Proto $pass_access_scheme;
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proxy_set_header X-Original-URI $request_uri;
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proxy_set_header X-Scheme $pass_access_scheme;
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# mitigate HTTPoxy Vulnerability
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# https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx/
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proxy_set_header Proxy "";
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# Custom headers
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{{ range $k, $v := $proxyHeaders }}
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proxy_set_header {{ $k }} "{{ $v }}";
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{{ end }}
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proxy_connect_timeout {{ $location.Proxy.ConnectTimeout }}s;
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proxy_send_timeout {{ $location.Proxy.SendTimeout }}s;
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proxy_read_timeout {{ $location.Proxy.ReadTimeout }}s;
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proxy_redirect off;
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proxy_buffering off;
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proxy_buffer_size "{{ $location.Proxy.BufferSize }}";
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proxy_buffers 4 "{{ $location.Proxy.BufferSize }}";
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proxy_http_version 1.1;
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proxy_cookie_domain {{ $location.Proxy.CookieDomain }};
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proxy_cookie_path {{ $location.Proxy.CookiePath }};
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{{/* rewrite only works if the content is not compressed */}}
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{{ if $location.Redirect.AddBaseURL }}
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proxy_set_header Accept-Encoding "";
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{{ end }}
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{{/* Add any additional configuration defined */}}
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{{ $location.ConfigurationSnippet }}
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{{ buildProxyPass $backends $location }}
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{{ else }}
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#{{ $location.Denied }}
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return 503;
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{{ end }}
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}
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{{ end }}
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{{ if eq $server.Hostname "_" }}
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# health checks in cloud providers require the use of port 80
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location {{ $healthzURI }} {
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access_log off;
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return 200;
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}
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# this is required to avoid error if nginx is being monitored
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# with an external software (like sysdig)
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location /nginx_status {
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allow 127.0.0.1;
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{{ if $IsIPV6Enabled }}allow ::1;{{ end }}
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deny all;
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access_log off;
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stub_status on;
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}
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{{ end }}
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{{ template "CUSTOM_ERRORS" $cfg }}
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}
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{{ end }}
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# default server, used for NGINX healthcheck and access to nginx stats
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server {
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# Use the port 18080 (random value just to avoid known ports) as default port for nginx.
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# Changing this value requires a change in:
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# https://github.com/kubernetes/contrib/blob/master/ingress/controllers/nginx/nginx/command.go#L104
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listen 18080 default_server reuseport backlog={{ .BacklogSize }};
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{{ if $IsIPV6Enabled }}listen [::]:18080 default_server reuseport backlog={{ .BacklogSize }};{{ end }}
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set $proxy_upstream_name "-";
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|
|
location {{ $healthzURI }} {
|
|
access_log off;
|
|
return 200;
|
|
}
|
|
|
|
location /nginx_status {
|
|
set $proxy_upstream_name "internal";
|
|
|
|
{{ if $cfg.EnableVtsStatus }}
|
|
vhost_traffic_status_display;
|
|
vhost_traffic_status_display_format html;
|
|
{{ else }}
|
|
access_log off;
|
|
stub_status on;
|
|
{{ end }}
|
|
}
|
|
|
|
# this location is used to extract nginx metrics
|
|
# using prometheus.
|
|
# TODO: enable extraction for vts module.
|
|
location /internal_nginx_status {
|
|
set $proxy_upstream_name "internal";
|
|
|
|
allow 127.0.0.1;
|
|
{{ if not $cfg.DisableIpv6 }}allow ::1;{{ end }}
|
|
deny all;
|
|
|
|
access_log off;
|
|
stub_status on;
|
|
}
|
|
|
|
location / {
|
|
set $proxy_upstream_name "upstream-default-backend";
|
|
proxy_pass http://upstream-default-backend;
|
|
}
|
|
{{ template "CUSTOM_ERRORS" $cfg }}
|
|
}
|
|
|
|
# default server for services without endpoints
|
|
server {
|
|
listen 8181;
|
|
set $proxy_upstream_name "-";
|
|
|
|
location / {
|
|
{{ if .CustomErrors }}
|
|
content_by_lua_block {
|
|
openURL(ngx.req.get_headers(0), 503)
|
|
}
|
|
{{ else }}
|
|
return 503;
|
|
{{ end }}
|
|
}
|
|
}
|
|
}
|
|
|
|
stream {
|
|
log_format log_stream {{ $cfg.LogFormatStream }};
|
|
|
|
{{ if $cfg.DisableAccessLog }}
|
|
access_log off;
|
|
{{ else }}
|
|
access_log /var/log/nginx/access.log log_stream;
|
|
{{ end }}
|
|
|
|
error_log /var/log/nginx/error.log;
|
|
|
|
# TCP services
|
|
{{ range $i, $tcpServer := .TCPBackends }}
|
|
upstream tcp-{{ $tcpServer.Backend.Namespace }}-{{ $tcpServer.Backend.Name }}-{{ $tcpServer.Backend.Port }} {
|
|
{{ range $j, $endpoint := $tcpServer.Endpoints }}
|
|
server {{ $endpoint.Address }}:{{ $endpoint.Port }};
|
|
{{ end }}
|
|
}
|
|
|
|
server {
|
|
listen {{ $tcpServer.Port }};
|
|
{{ if $IsIPV6Enabled }}listen [::]:{{ $tcpServer.Port }};{{ end }}
|
|
proxy_pass tcp-{{ $tcpServer.Backend.Namespace }}-{{ $tcpServer.Backend.Name }}-{{ $tcpServer.Backend.Port }};
|
|
}
|
|
{{ end }}
|
|
|
|
# UDP services
|
|
{{ range $i, $udpServer := .UDPBackends }}
|
|
upstream udp-{{ $udpServer.Backend.Namespace }}-{{ $udpServer.Backend.Name }}-{{ $udpServer.Backend.Port }} {
|
|
{{ range $j, $endpoint := $udpServer.Endpoints }}
|
|
server {{ $endpoint.Address }}:{{ $endpoint.Port }};
|
|
{{ end }}
|
|
}
|
|
|
|
server {
|
|
listen {{ $udpServer.Port }} udp;
|
|
{{ if $IsIPV6Enabled }}listen [::]:{{ $udpServer.Port }}{{ end }}
|
|
proxy_responses 1;
|
|
proxy_pass udp-{{ $udpServer.Backend.Namespace }}-{{ $udpServer.Backend.Name }}-{{ $udpServer.Backend.Port }};
|
|
}
|
|
{{ end }}
|
|
}
|
|
|
|
{{/* definition of templates to avoid repetitions */}}
|
|
{{ define "CUSTOM_ERRORS" }}
|
|
{{ range $errCode := .CustomHTTPErrors }}
|
|
location @custom_{{ $errCode }} {
|
|
internal;
|
|
content_by_lua_block {
|
|
openURL(ngx.req.get_headers(0), {{ $errCode }})
|
|
}
|
|
}
|
|
{{ end }}
|
|
{{ end }}
|
|
|
|
{{/* CORS support from https://michielkalkman.com/snippets/nginx-cors-open-configuration.html */}}
|
|
{{ define "CORS" }}
|
|
if ($request_method = 'OPTIONS') {
|
|
add_header 'Access-Control-Allow-Origin' '*';
|
|
#
|
|
# Om nom nom cookies
|
|
#
|
|
add_header 'Access-Control-Allow-Credentials' 'true';
|
|
add_header 'Access-Control-Allow-Methods' 'GET, PUT, POST, DELETE, OPTIONS';
|
|
#
|
|
# Custom headers and headers various browsers *should* be OK with but aren't
|
|
#
|
|
add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
|
|
#
|
|
# Tell client that this pre-flight info is valid for 20 days
|
|
#
|
|
add_header 'Access-Control-Max-Age' 1728000;
|
|
add_header 'Content-Type' 'text/plain charset=UTF-8';
|
|
add_header 'Content-Length' 0;
|
|
return 204;
|
|
}
|
|
set $cors_method 0;
|
|
if ($request_method = 'GET') {
|
|
set $cors_method 1;
|
|
}
|
|
if ($request_method = 'PUT') {
|
|
set $cors_method 1;
|
|
}
|
|
if ($request_method = 'POST') {
|
|
set $cors_method 1;
|
|
}
|
|
if ($request_method = 'DELETE') {
|
|
set $cors_method 1;
|
|
}
|
|
|
|
if ($cors_method = 1) {
|
|
add_header 'Access-Control-Allow-Origin' '*' always;
|
|
add_header 'Access-Control-Allow-Credentials' 'true';
|
|
add_header 'Access-Control-Allow-Methods' 'GET, PUT, POST, DELETE, OPTIONS';
|
|
add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
|
|
}
|
|
{{ end }}
|