nginx.conf

user www-data;
pid /run/nginx.pid;

worker_processes 2;
worker_rlimit_nofile 12288;

events {
  worker_connections 4096;
}

http {
  log_format ltsv "status:$status"
    "\ttime:$time_iso8601"
    "\treqtime:$request_time"
    "\tmethod:$request_method"
    "\turi:$request_uri"
    "\tprotocol:$server_protocol"
    "\tua:$http_user_agent"
    "\tforwardedfor:$http_x_forwarded_for"
    "\thost:$remote_addr"
    "\treferer:$http_referer"
    "\tserver_name:$server_name"
    "\tvhost:$host"
    "\tsize:$body_bytes_sent"
    "\treqsize:$request_length"
    "\truntime:$upstream_http_x_runtime"
    "\tapptime:$upstream_response_time";
  error_log /var/log/nginx/error.log warn;

  include       /etc/nginx/mime.types;
  default_type  application/octet-stream;

  sendfile on;
  open_file_cache max=1024 inactive=60s;
  tcp_nopush on;


  #gzip on;
  #gzip_min_length 1100;
  #gzip_buffers 4 8k;
  #gzip_types application/atom+xml text/plain text/css text/javascript application/json application/javascript;
  #gzip_vary on;
  #gzip_disable        "MSIE [1-6]\.";
  gzip_static on;


  keepalive_timeout  65;

  proxy_buffers 100 32k;
  proxy_buffer_size 8k;
  client_body_buffer_size 16k;

  client_max_body_size 20M;

  upstream app {
    server unix:/run/isubata/puma.sock fail_timeout=0;
  }

  upstream isuone {
    server isu1:8080 fail_timeout=0;
    keepalive 128;
  }
  upstream isutwo {
    server isu2:8080 fail_timeout=0;
    keepalive 128;
  }
  upstream isuthree {
    server isu3:8080 fail_timeout=0;
    keepalive 128;
  }
  upstream fetch {
    server isu2:8080 fail_timeout=0;
    server isu3:8080 fail_timeout=0;
    #server isu2:9000 fail_timeout=0;
    #server isu3:9000 fail_timeout=0;
    keepalive 128;
  }


  server {
    listen 0.0.0.0:8080 default_server;

    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Host $http_host;
    proxy_http_version 1.1;

    root /home/isucon/git/webapp/public;

    location / {
      proxy_pass http://app;
    }
    location /profile {
      client_body_buffer_size 5000k;
      proxy_pass http://app;
    }


    location /icons {
      add_header Cache-Control "public, max-age=86400";
      root /home/isucon/public;
    }

  }

  server {
    listen 0.0.0.0:80 default_server;
    access_log  /var/log/nginx/access.log  ltsv;

    proxy_set_header Connection "";
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Host $http_host;
    proxy_http_version 1.1;

    root /home/isucon/isubata/webapp/public;

    location /favicon.ico {
    }
    location /fonts/ {
      add_header Cache-Control "public, max-age=86400";
    }
    location /js/ {
      add_header Cache-Control "public, max-age=86400";
    }
    location /css/ {
      add_header Cache-Control "public, max-age=86400";
    }

    location /icons {
      try_files $uri @isuone;
      add_header Cache-Control "public, max-age=86400";
      root /home/isucon/public;
    }
    location @isuone {
      add_header Via "isuone";
      proxy_pass http://isuone;
    }
    location /profile {
      client_body_buffer_size 5000k;
      proxy_pass http://isuone;
    }
    location /fetch {
      proxy_pass http://fetch;
    }

    location / {
      proxy_pass http://app;
    }
  }
}