Nginx : Reverse Proxy2024/02/13 |
Configure Nginx as a Reverse Proxy Server.
For example, Configure Nginx that HTTP/HTTPS accesses to [www.srv.world] are forwarded to [node01.srv.world].
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[1] | |
[2] | Configure Nginx. |
root@www:~ #
vi /usr/local/etc/nginx/nginx.conf # change content of [server] section like follows # replace server name or certificates to yours
server {
listen 80 default_server;
listen [::]:80 default_server;
listen 443 ssl http2 default_server;
listen [::]:443 ssl http2 default_server;
server_name www.srv.world;
ssl_certificate "/usr/local/etc/letsencrypt/live/www.srv.world/fullchain.pem";
ssl_certificate_key "/usr/local/etc/letsencrypt/live/www.srv.world/privkey.pem";
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 5m;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
location / {
proxy_pass http://node01.srv.world/;
}
}
root@www:~ # service nginx reload
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[3] | Configure backend Nginx server to log X-Forwarded-For header. |
root@node01:~ #
vi /usr/local/etc/nginx/nginx.conf # line 26-28 : uncomment log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; # add lines in [server] section server { listen 80; server_name node01.srv.world; set_real_ip_from 10.0.0.0/24; real_ip_header X-Forwarded-For;root@node01:~ # service nginx reload
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[4] | Verify it works fine to access to frontend Nginx Server from any Client Computer. |
[5] |
It's possible to proxy requests of multiple hostnames or domainnames.
For example, [www.srv.world], [rx-7.srv.world], [rx-8.srv.world] are assigned the same IP address (10.0.0.31 on here) by DNS setting
and Nginx on the server with its IP address receives all requests to those hostname.This example shows to use servers which have the same domainname but it's no problem if domainnames are not the same one. The example below shows to configure Nginx that requests to [www.srv.world] are forwarded to the backend server [node01.srv.world (10.0.0.51)] (settings in [1]), requests to [rx-7.srv.world] are forwarded to the backend server [rx-7.srv.world (10.0.0.101)], requests to [rx-8.srv.world] are forwarded to the backend server [rx-8.srv.world (10.0.0.102)]. |
root@www:~ #
vi /usr/local/etc/nginx/nginx.conf # add in the [http] section
http {
.....
.....
server {
listen 80;
listen [::]:80;
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name rx-7.srv.world;
ssl_certificate "/usr/local/etc/letsencrypt/live/rx-7.srv.world/fullchain.pem";
ssl_certificate_key "/usr/local/etc/letsencrypt/live/rx-7.srv.world/privkey.pem";
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 5m;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
location / {
proxy_pass http://rx-7.srv.world/;
}
}
server {
listen 80;
listen [::]:80;
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name rx-8.srv.world;
ssl_certificate "/usr/local/etc/letsencrypt/live/rx-8.srv.world/fullchain.pem";
ssl_certificate_key "/usr/local/etc/letsencrypt/live/rx-8.srv.world/privkey.pem";
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 5m;
proxy_redirect off;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
location / {
proxy_pass http://rx-8.srv.world/;
}
}
root@www:~ # service nginx reload
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[6] | Verify it works fine to access to each hostname from any Client Computer. |
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