Nginx: reverse proxy to grpc server

hyhlinux 2020-11-12 22:00:39
nginx reverse proxy grpc server


1.nginx Reverse proxy to grpc

  • http
  • http v2 (grpc)

Back end golang Used grpc Some microservices have been developed , Access directly using port request .

  • Safe hidden trouble , Need to open ports .
  • grpc Of go The server , There is no front end nginx As a buffer , Difficult to support a large number of requests .
  • Connect the request from the public network to go Compiling grpc Service for , When you encounter a slow request , Will be dragged down .
    • eg: Every client request uploads large files , Take up one grpc Connect , The public network takes a long time , And grpc server The processing efficiency is low .
    • eg:nginx After receiving the uploaded file , Agent request , Connect directly on the intranet go grpc server, It is better than the direct connection of Internet .

2.grpc app To configure

grpc app: port

127.0.0.1:9091
127.0.0.1:9092

3.nginx conf

grpcapp.conf:

upstream grpcservers {
hash $request_uri;
server 127.0.0.1:9002;
server 127.0.0.1:9003;
}
server {
listen 9090 http2;
access_log ./logs/grpc_app/api.access.log ;
error_log ./logs/grpc_app/api.errors.log ;
location / {
grpc_pass grpc://grpcservers;
grpc_connect_timeout 300;
grpc_read_timeout 300;
grpc_send_timeout 300;
}
}

It uses grpc_xxx The order to start ,nginx Need to support http v2 Related modules to support grpc_xx Instructions .

4.nginx How to support grpc modular

  • enable http v2
  • make

4.1 stay nginx Source directory for configuration ( Turn on http_v2)

#--with-http_v2_module enable ngx_http_v2_module
./auto/configure --prefix=`pwd` --with-debug --with-http_v2_module

./auto/configure It will be done automatically obj/Makefile Of http v2 Dependent configuration .

4.2 in the light of CLion Of CMakeList.txt

Reference resources

1. The header file depends on :

src/http/v2

2.nginx Module dependency :

 src/http/v2/ngx_http_v2_filter_module.c
src/http/v2/ngx_http_v2.c
src/http/v2/ngx_http_v2_table.c
src/http/v2/ngx_http_v2_encode.c
src/http/v2/ngx_http_v2_huff_decode.c
src/http/v2/ngx_http_v2_huff_encode.c
src/http/v2/ngx_http_v2_module.c
src/http/modules/ngx_http_grpc_module.c

grpc What instructions are implemented

src/http/modules/ngx_http_grpc_module.c Implemented instructions :

  • grpc_pass
  • grpc_bind
  • grpc_socket_keepalive
  • grpc_connect_timeout
  • grpc_send_timeout
  • grpc_intercept_errors
  • grpc_buffer_size
  • grpc_read_timeout
  • grpc_next_upstream
  • grpc_next_upstream_tries
  • grpc_next_upstream_timeout
  • grpc_set_header
  • grpc_pass_header
  • grpc_hide_header
  • grpc_ignore_headers

ssl:

  • grpc_ssl_session_reuse
  • grpc_ssl_protocols
  • grpc_ssl_ciphers
  • grpc_ssl_name
  • grpc_ssl_server_name
  • grpc_ssl_verify
  • grpc_ssl_verify_depth
  • grpc_ssl_trusted_certificate
  • grpc_ssl_crl
  • grpc_ssl_certificate
  • grpc_ssl_certificate_key
  • grpc_ssl_password_file
static ngx_command_t ngx_http_grpc_commands[] = {
{ ngx_string("grpc_pass"),
NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
ngx_http_grpc_pass,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
{ ngx_string("grpc_bind"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
ngx_http_upstream_bind_set_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.local),
NULL },
{ ngx_string("grpc_socket_keepalive"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.socket_keepalive),
NULL },
{ ngx_string("grpc_connect_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.connect_timeout),
NULL },
{ ngx_string("grpc_send_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.send_timeout),
NULL },
{ ngx_string("grpc_intercept_errors"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.intercept_errors),
NULL },
{ ngx_string("grpc_buffer_size"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.buffer_size),
NULL },
{ ngx_string("grpc_read_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.read_timeout),
NULL },
{ ngx_string("grpc_next_upstream"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream),
&ngx_http_grpc_next_upstream_masks },
{ ngx_string("grpc_next_upstream_tries"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_tries),
NULL },
{ ngx_string("grpc_next_upstream_timeout"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_msec_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_timeout),
NULL },
{ ngx_string("grpc_set_header"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
ngx_conf_set_keyval_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, headers_source),
NULL },
{ ngx_string("grpc_pass_header"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_array_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.pass_headers),
NULL },
{ ngx_string("grpc_hide_header"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_array_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.hide_headers),
NULL },
{ ngx_string("grpc_ignore_headers"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.ignore_headers),
&ngx_http_upstream_ignore_headers_masks },
#if (NGX_HTTP_SSL)
{ ngx_string("grpc_ssl_session_reuse"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_session_reuse),
NULL },
{ ngx_string("grpc_ssl_protocols"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, ssl_protocols),
&ngx_http_grpc_ssl_protocols },
{ ngx_string("grpc_ssl_ciphers"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, ssl_ciphers),
NULL },
{ ngx_string("grpc_ssl_name"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_set_complex_value_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_name),
NULL },
{ ngx_string("grpc_ssl_server_name"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_server_name),
NULL },
{ ngx_string("grpc_ssl_verify"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_verify),
NULL },
{ ngx_string("grpc_ssl_verify_depth"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, ssl_verify_depth),
NULL },
{ ngx_string("grpc_ssl_trusted_certificate"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, ssl_trusted_certificate),
NULL },
{ ngx_string("grpc_ssl_crl"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, ssl_crl),
NULL },
{ ngx_string("grpc_ssl_certificate"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate),
NULL },
{ ngx_string("grpc_ssl_certificate_key"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_str_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate_key),
NULL },
{ ngx_string("grpc_ssl_password_file"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_http_grpc_ssl_password_file,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
#endif
ngx_null_command
};
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