NGINX 및 NGINX Plus를 사용한 로드 밸런싱, 2부

server {    listen 80;

    location / {
        proxy_pass http://backend;

        # Rewrite the 'Host' header to the value in the client request,
        # or primary server name
        proxy_set_header Host $host;

        # Alternatively, put the value in the config:
        # proxy_set_header Host www.example.com;
    } 
}

upstream backend {
    zone backend 64k;  # Use NGINX Plus' shared memory
    least_conn;

    server webserver1 weight=1;
    server webserver2 weight=4;
}

server {    listen 80;
    location / {
        proxy_pass http://backend;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
     }
}

upstream backend {
    server webserver1;
    server webserver2;

    # maintain up to 20 idle connections to the group of upstream servers
    keepalive 20;
}

server {    listen 80;

    location / {
        proxy_pass http://backend;

        health_check interval=2s fails=1 passes=5 uri=/test.php match=statusok;

        # The health checks inherit other proxy settings
        proxy_set_header Host www.foo.com;
    }
}

match statusok {
    # Used for /test.php health check
    status 200;
    header Content-Type = text/html;
    body ~ "Server[0-9]+ is alive";
}

location / {    proxy_pass http://backend;

    # This health check might not work...
    health_check interval=2s fails=1 passes=5 uri=/test.php match=statusok;

    # Extract the 'Host' header from the request
    proxy_set_header Host $host;
}

location /internal-health-check1 {    internal; # Prevent external requests from matching this location block

    proxy_pass http://backend;

    health_check interval=2s fails=1 passes=5 uri=/test.php match=statusok;

    # Explicitly set request parameters; don't use run-time variables
    proxy_set_header Host www.example.com;
}

sticky cookie srv_id expires=1h domain=.example.com path=/;

upstream backend {
   server backend1.example.com route=a;
   server backend2.example.com route=b;

    # select first non-empty variable; it should contain either 'a' or 'b'
    sticky route $route_cookie $route_uri;
}

proxy_redirect http://staging.mysite.com/ http://$host/;

sub_filter /blog/ /blog-staging/;
sub_filter_once off;

proxy_set_header Accept-Encoding "";

server {
    listen 80;

    location / {
        proxy_pass http://backend;

        proxy_http_version 1.1;
        proxy_set_header Connection "";
        proxy_set_header Accept-Encoding "";
        proxy_redirect http://staging.example.com/ http://$host/;

        # Rewrite the Host header to the value in the client request
        proxy_set_header Host $host;

        # Replace any references inline to staging.example.com
        sub_filter http://staging.example.com/ /;
        sub_filter_once off;
    }

    location /internal-health-check1 {
        internal; # Prevent external requests from matching this location block
        proxy_pass http://backend;
        health_check interval=2s fails=1 passes=5 uri=/test.php match=statusok;
        # Explicitly set request parameters; don't use runtime variables
        proxy_set_header Host www.example.com;
    }
 
upstream backend {
    zone backend 64k; # Use NGINX Plus' shared memory
    least_conn;
    keepalive 20;

    # Apply session persistence for this upstream group
    sticky cookie srv_id expires=1h domain=.example.com path=/servlet;

    server webserver1 weight=1; 
    server webserver2 weight=4; 
}

match statusok {
    # Used for /test.php health check
    status 200;
    header Content-Type = text/html;
    body ~ "Server[0-9]+ is alive";
}

server {
    listen 8080;
    root /usr/share/nginx/html;

    location = /api {
        api write=on; # Live activity monitoring and
                      # dynamic configuration of upstream groups

        allow 127.0.0.1; # permit access from localhost
        deny all;        # deny access from everywhere else
    }
}