├── README.md
├── conf.d
    ├── dashboard.conf
    ├── lb.conf
    └── web.conf
└── nginx.conf


/README.md:
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 1 | # load-balancing
 2 | This is the supporting GitHub link for the YouTube tutorial on configuring NGINX/Plus as Load Balancer
 3 | 
 4 | 
 5 | I have commented out all the load-balancing methods, so the default, round-robin would work with this configuration as is. 
 6 | 
 7 | While Loop which I used to extract and print a specific value from the header:
 8 | 
 9 |     while true; do curl -sI <load-balancer-ip:port> | tr -d '\r' | sed -En 's/^Custom-Header: (.*)/\1/p'; sleep 1; done
10 | 
11 | 
12 | 
13 | ##### Useful Links:
14 | * [NGINX Plus - Load Balancing](https://www.nginx.com/products/nginx/load-balancing)
15 | * [NGINX Plus - Technical Documents - HTTP Load Balancing](https://docs.nginx.com/nginx/admin-guide/load-balancer/http-load-balancer/)
16 | * [NGINX - Technical Docs - Upstream Directive](http://nginx.org/en/docs/http/ngx_http_upstream_module.html)
17 | 
18 | 
19 | 
20 | ## Built With
21 | 
22 | * [Ubuntu](https://ubuntu.com/) - My favourite Linux OS for testing
23 | * [NGINX Plus](https://www.nginx.com/free-trial-request/) - NGINX Plus Trial
24 | 
25 | 
26 | ## Author
27 | 
28 | * **Jay Desai** - *Other Repos* - [jay-nginx](https://github.com/jay-nginx)
29 | 
30 | 
31 | 
32 | 
33 | 


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/conf.d/dashboard.conf:
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 1 | server {
 2 | 
 3 |     listen       8080;
 4 | 
 5 |         location /api {
 6 |         api write=on;
 7 |         allow all;
 8 |     }
 9 | 
10 |     location / {
11 |     root /usr/share/nginx/html;
12 |     index   dashboard.html;
13 |     }
14 | }
15 | 


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/conf.d/lb.conf:
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 1 | 
 2 | upstream backend_servers {
 3 | 
 4 |     #hash $request_uri;
 5 |     #ip_hash;
 6 |     #least_conn;
 7 |     zone backend_server_zone 64k;
 8 |     server 127.0.0.1:9001;
 9 |     server 127.0.0.1:9002;
10 |     server 127.0.0.1:9003;
11 |     #sticky cookie lb_example expires=1h;
12 | }
13 | 
14 | server {
15 |     listen 80;
16 |     server_name  www.example.com;
17 |     
18 |     proxy_set_header Host $host;
19 |     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
20 |     proxy_set_header X-Real-IP  $remote_addr;
21 | 
22 |     location / {
23 |     proxy_pass http://backend_servers/;
24 | 
25 |     }
26 |     
27 |     
28 | }
29 | 


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/conf.d/web.conf:
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 1 | server {
 2 |     
 3 |     listen       9001;
 4 |     index  index.html;
 5 |     add_header Custom-Header "Application 1";
 6 |    
 7 |     location / {
 8 |     root   /opt/services/App1;
 9 | 
10 |     }
11 | }
12 | 
13 | server {
14 |     
15 |     listen       9002;
16 |     index  index.html;
17 |     add_header Custom-Header "Application 2";
18 | 
19 |     location / {
20 |     root   /opt/services/App2;
21 |     }
22 | }
23 | 
24 | server {
25 |     
26 |     listen       9003;
27 |     index  index.html;
28 |     add_header Custom-Header "Application 3";
29 | 
30 |     location / {
31 |     root   /opt/services/App3;
32 |     }
33 | }
34 | 


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/nginx.conf:
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 1 | user  nginx;
 2 | worker_processes  auto;
 3 | 
 4 | error_log  /var/log/nginx/error.log notice;
 5 | pid        /var/run/nginx.pid;
 6 | 
 7 | 
 8 | events {
 9 |     worker_connections  1024;
10 | }
11 | 
12 | 
13 | http {
14 |     include       /etc/nginx/mime.types;
15 |     default_type  application/octet-stream;
16 | 
17 |     log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
18 |                       '$status $body_bytes_sent "$http_referer" '
19 |                       '"$http_user_agent" "$http_x_forwarded_for"';
20 | 
21 |     access_log  /var/log/nginx/access.log  main;
22 | 
23 |     sendfile        on;
24 | 
25 |     keepalive_timeout  65;
26 | 
27 | 
28 |     include /etc/nginx/conf.d/*.conf;
29 | }
30 | 


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