lemmy/docker/prod/nginx.conf

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Nginx Configuration File
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# nginx example config
# replace {{yourdomain}} and review the certbot/letsencrypt config
worker_processes 1;
events {
worker_connections 1024;
}
http {
limit_req_zone $binary_remote_addr zone={{yourdomain}}_ratelimit:10m rate=1r/s;
upstream lemmy {
# this needs to map to the lemmy (server) docker service hostname
server "lemmy:8536";
}
upstream lemmy-ui {
# this needs to map to the lemmy-ui docker service hostname
server "lemmy-ui:1234";
}
server {
# allow letsencrypt challenge
# redirect everything else to 443
listen 80;
listen [::]:80;
server_name {{yourdomain}};
location /.well-known/acme-challenge/ {
root /var/www/certbot;
}
location / {
return 301 https://$host$request_uri;
}
}
server {
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name {{yourdomain}};
ssl_certificate /etc/letsencrypt/live/{{yourdomain}}/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/{{yourdomain}}/privkey.pem;
# Various TLS hardening settings
# https://raymii.org/s/tutorials/Strong_SSL_Security_On_nginx.html
ssl_protocols TLSv1.2 TLSv1.3;
ssl_prefer_server_ciphers on;
ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';
ssl_session_timeout 10m;
ssl_session_cache shared:SSL:10m;
ssl_session_tickets on;
ssl_stapling on;
ssl_stapling_verify on;
# Hide nginx version
server_tokens off;
# Enable compression for JS/CSS/HTML bundle, for improved client load times.
# It might be nice to compress JSON, but leaving that out to protect against potential
# compression+encryption information leak attacks like BREACH.
gzip on;
gzip_types text/css application/javascript image/svg+xml;
gzip_vary on;
# Only connect to this site via HTTPS for the two years
add_header Strict-Transport-Security "max-age=63072000";
# Various content security headers
add_header Referrer-Policy "same-origin";
add_header X-Content-Type-Options "nosniff";
add_header X-Frame-Options "DENY";
add_header X-XSS-Protection "1; mode=block";
# Upload limit for pictrs
client_max_body_size 20M;
# frontend
location / {
# distinguish between ui requests and backend
# don't change lemmy-ui or lemmy here, they refer to the upstream definitions on top
set $proxpass "http://lemmy-ui";
if ($http_accept = "application/activity+json") {
set $proxpass "http://lemmy";
}
if ($http_accept = "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"") {
set $proxpass "http://lemmy";
}
if ($request_method = POST) {
set $proxpass "http://lemmy";
}
proxy_pass $proxpass;
rewrite ^(.+)/+$ $1 permanent;
# Send actual client IP upstream
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
# backend
location ~ ^/(api|feeds|nodeinfo|.well-known) {
proxy_pass "http://lemmy";
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
# Rate limit
limit_req zone={{yourdomain}}_ratelimit burst=30 nodelay;
# Add IP forwarding headers
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
# pictrs only - for adding browser cache control.
location ~ ^/(pictrs) {
# allow browser cache, images never update, we can apply long term cache
expires 120d;
add_header Pragma "public";
add_header Cache-Control "public";
proxy_pass "http://lemmy";
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
# Rate limit
limit_req zone={{yourdomain}}_ratelimit burst=30 nodelay;
# Add IP forwarding headers
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
# Redirect pictshare images to pictrs
location ~ /pictshare/(.*)$ {
return 301 /pictrs/image/$1;
}
}
# Anonymize IP addresses
# https://www.supertechcrew.com/anonymizing-logs-nginx-apache/
map $remote_addr $remote_addr_anon {
~(?P<ip>\d+\.\d+\.\d+)\. $ip.0;
~(?P<ip>[^:]+:[^:]+): $ip::;
127.0.0.1 $remote_addr;
::1 $remote_addr;
default 0.0.0.0;
}
access_log /var/log/nginx/access.log combined;
}