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Fix stale nginx domain, add upstream health checks, rate limiting, and WebSocket timeouts #117

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Initial plan
Copilot Mar 4, 2026
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Fix stale nginx domain, add upstream health checks, rate limiting, an…
Copilot Mar 4, 2026
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104 changes: 104 additions & 0 deletions rpc/mainnet/etc/nginx/sites-available/default
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Original file line number Diff line number Diff line change
@@ -0,0 +1,104 @@
##
# You should look at the following URL's in order to grasp a solid understanding
# of Nginx configuration files in order to fully unleash the power of Nginx.
# https://www.nginx.com/resources/wiki/start/
# https://www.nginx.com/resources/wiki/start/topics/tutorials/config_pitfalls/
# https://wiki.debian.org/Nginx/DirectoryStructure
#
# In most cases, administrators will remove this file from sites-enabled/ and
# leave it as reference inside of sites-available where it will continue to be
# updated by the nginx packaging team.
#
# This file will automatically load configuration files provided by other
# applications, such as Drupal or Wordpress. These applications will be made
# available underneath a path with that package name, such as /drupal8.
#
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
##

limit_req_zone $binary_remote_addr zone=rpc_limit:10m rate=30r/s;

upstream validator {
server <internal-ip-val-m1>:9650 max_fails=3 fail_timeout=30s;
server <internal-ip-val-m2>:9650 max_fails=3 fail_timeout=30s;
server <internal-ip-val-m3>:9650 max_fails=3 fail_timeout=30s;
server <internal-ip-val-m4>:9650 max_fails=3 fail_timeout=30s;
server <internal-ip-val-m5>:9650 max_fails=3 fail_timeout=30s;
keepalive 16;
}

# Default server configuration
#
server {
listen 80 default_server;
listen [::]:80 default_server;

root /var/www/html;

# Add index.php to the list if you are using PHP
index index.html index.htm index.nginx-debian.html;

server_name _;

location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ =404;
}
}

server {

root /var/www/html;

# Add index.php to the list if you are using PHP
index index.html index.htm index.nginx-debian.html;
server_name mainnetrpc.num.network; # managed by Certbot


location / {
#try_files $uri $uri/ =404;

limit_req zone=rpc_limit burst=50 nodelay;
client_max_body_size 1m;
proxy_connect_timeout 10s;
proxy_read_timeout 60s;
proxy_send_timeout 60s;
proxy_pass http://validator/ext/bc/<mainnet-chain-id>/rpc;
}

location /ws {
proxy_pass http://validator/ext/bc/<mainnet-chain-id>/ws;
proxy_http_version 1.1;
proxy_read_timeout 3600s;
proxy_send_timeout 3600s;
proxy_buffering off;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}


listen [::]:443 ssl ipv6only=on; # managed by Certbot
listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/mainnetrpc.num.network/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/mainnetrpc.num.network/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}
server {
if ($host = mainnetrpc.num.network) {
return 301 https://$host$request_uri;
} # managed by Certbot


listen 80 ;
listen [::]:80 ;
server_name mainnetrpc.num.network;
return 404; # managed by Certbot


}
33 changes: 23 additions & 10 deletions rpc/testnet/etc/nginx/sites-available/default
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Original file line number Diff line number Diff line change
Expand Up @@ -16,12 +16,15 @@
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
##

limit_req_zone $binary_remote_addr zone=rpc_limit:10m rate=30r/s;

upstream validator {
server <internal-ip-val-t1>:9650;
server <internal-ip-val-t2>:9650;
server <internal-ip-val-t3>:9650;
server <internal-ip-val-t4>:9650;
server <internal-ip-val-t5>:9650;
server <internal-ip-val-t1>:9650 max_fails=3 fail_timeout=30s;
server <internal-ip-val-t2>:9650 max_fails=3 fail_timeout=30s;
server <internal-ip-val-t3>:9650 max_fails=3 fail_timeout=30s;
server <internal-ip-val-t4>:9650 max_fails=3 fail_timeout=30s;
server <internal-ip-val-t5>:9650 max_fails=3 fail_timeout=30s;
keepalive 16;
}

# Default server configuration
Expand Down Expand Up @@ -120,23 +123,33 @@ server {

# Add index.php to the list if you are using PHP
index index.html index.htm index.nginx-debian.html;
server_name testnetrpc.numbersprotocol.io; # managed by Certbot
server_name testnetrpc.num.network; # managed by Certbot


location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
#try_files $uri $uri/ =404;

limit_req zone=rpc_limit burst=50 nodelay;
client_max_body_size 1m;
proxy_connect_timeout 10s;
proxy_read_timeout 60s;
proxy_send_timeout 60s;
proxy_pass http://validator/ext/bc/2oo5UvYgFQikM7KBsMXFQE3RQv3xAFFc8JY2GEBNBF1tp4JaeZ/rpc;
}

location /ws {
proxy_pass http://validator/ext/bc/2oo5UvYgFQikM7KBsMXFQE3RQv3xAFFc8JY2GEBNBF1tp4JaeZ/ws;
proxy_http_version 1.1;
proxy_read_timeout 3600s;
proxy_send_timeout 3600s;
proxy_buffering off;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

# pass PHP scripts to FastCGI server
Expand All @@ -160,21 +173,21 @@ server {

listen [::]:443 ssl ipv6only=on; # managed by Certbot
listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/testnetrpc.numbersprotocol.io/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/testnetrpc.numbersprotocol.io/privkey.pem; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/testnetrpc.num.network/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/testnetrpc.num.network/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}
server {
if ($host = testnetrpc.numbersprotocol.io) {
if ($host = testnetrpc.num.network) {
return 301 https://$host$request_uri;
} # managed by Certbot


listen 80 ;
listen [::]:80 ;
server_name testnetrpc.numbersprotocol.io;
server_name testnetrpc.num.network;
return 404; # managed by Certbot


Expand Down