# Nginx Cheatsheet
Nginx is open-source software for web serving, reverse proxying, caching, load balancing, media streaming, and more. In this post, I will mention few Nginx configurations which we use frequently.
### Index
* [Listen To Port](#listen-to-port)
* [Access Logging](#access-logging)
* [Domain Name](#domain-name)
* [Static Assets](#static-assets)
* [Redirect](#redirect)
* [Reverse Proxy](#reverse-proxy)
* [Load Balancing](#load-balancing)
* [SSL](#ssl)
## Listen To Port
``` nginx
server {
# Standard HTTP Protocol
listen 80;
# Standard HTTPS Protocol
listen 443 ssl;
# For http2
listen 443 ssl http2;
# Listen on 80 using IPv6
listen [::]:80;
# Listen only on using IPv6
listen [::]:80 ipv6only=on;
}
```
## Access Logging
``` nginx
server {
# Relative or full path to log file
access_log /path/to/file.log;
# Turn 'on' or 'off'
access_log on;
}
```
## Domain Name
``` nginx
server {
# Listen to yourdomain.com
server_name yourdomain.com;
# Listen to multiple domains
server_name yourdomain.com www.yourdomain.com;
# Listen to all domains
server_name *.yourdomain.com;
# Listen to all top-level domains
server_name yourdomain.*;
# Listen to unspecified Hostnames (Listens to IP address itself)
server_name "";
}
```
## Static Assets
``` nginx
server {
listen 80;
server_name yourdomain.com;
location / {
root /path/to/website;
}
}
```
## Redirect
``` nginx
server {
listen 80;
server_name www.yourdomain.com;
return 301 http://yourdomain.com$request_uri;
}
```
``` nginx
server {
listen 80;
server_name www.yourdomain.com;
location /redirect-url {
return 301 http://otherdomain.com;
}
}
```
## Reverse Proxy
``` nginx
server {
listen 80;
server_name yourdomain.com;
location / {
proxy_pass http://0.0.0.0:3000;
# where 0.0.0.0:3000 is your application server (Ex: node.js) bound on 0.0.0.0 listening on port 3000
}
}
```
## Load Balancing
``` nginx
upstream node_js {
server 0.0.0.0:3000;
server 0.0.0.0:4000;
server 123.131.121.122;
}
server {
listen 80;
server_name yourdomain.com;
location / {
proxy_pass http://node_js;
}
}
```
## SSL
``` nginx
server {
listen 443 ssl;
server_name yourdomain.com;
ssl on;
ssl_certificate /path/to/cert.pem;
ssl_certificate_key /path/to/privatekey.pem;
ssl_stapling on;
ssl_stapling_verify on;
ssl_trusted_certificate /path/to/fullchain.pem;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_session_timeout 1h;
ssl_session_cache shared:SSL:50m;
add_header Strict-Transport-Security max-age=15768000;
}
# Permanent Redirect for HTTP to HTTPS
server {
listen 80;
server_name yourdomain.com;
return 301 https://$host$request_uri;
}
```
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