Optimized nginx configuration for an AWS Elastic Beanstalk environment using an Application Load Balancer.

nginxoptimization.config

files:
  "/opt/elasticbeanstalk/#etc#nginx#optimized-nginx.conf":
    mode: "000644"
    owner: root
    group: root
    encoding: plain
    content: |
      # Elastic Beanstalk Managed

      # Elastic Beanstalk managed configuration file
      # Some configuration of nginx can be by placing files in /etc/nginx/conf.d
      # using Configuration Files.
      # http://docs.amazonwebservices.com/elasticbeanstalk/latest/dg/customize-containers.html
      #
      # Modifications of nginx.conf can be performed using container_commands to modify the staged version
      # located in /tmp/deployment/config/etc#nginx#nginx.conf

      # THIS FILE HAS BEEN MODIFIED BY AN `.ebextensions` SCRIPT

      user  nginx;
      worker_processes  1;

      error_log  /var/log/nginx/error.log;

      pid        /var/run/nginx.pid;

      worker_rlimit_nofile 65536;

      events {
          worker_connections  8192;
          use epoll;
      }

      http {

        client_max_body_size 100m;
        port_in_redirect off;
        include       /etc/nginx/mime.types;
        default_type  application/octet-stream;

        log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                          '$status $body_bytes_sent "$http_referer" '
                          '"$http_user_agent" "$http_x_forwarded_for" '
                          '$request_time $upstream_response_time';

        access_log  /var/log/nginx/access.log  main;

        sendfile        on;

        keepalive_timeout  65;

        # Elastic Beanstalk Modification(EB_INCLUDE)
        log_format healthd '$msec"$uri"'
                           '$status"$request_time"$upstream_response_time"'
                           '$http_x_forwarded_for';

        include /etc/nginx/conf.d/*.conf;
        # End Modification
      }
  "/etc/security/limits.conf":
    mode: "000644"
    encoding: plain
    owner: root
    group: root
    content: |
      # THIS FILE HAS BEEN MODIFIED BY AN `.ebextensions` SCRIPT
      nginx            soft    nofile          65535
      nginx            hard    nofile          65535

container_commands:
  01-mv:
    command: "mv -f /opt/elasticbeanstalk/#etc#nginx#optimized-nginx.conf /tmp/deployment/config/#etc#nginx#nginx.conf"

Thanks for sharing this file, just a question do you know how I can update this file once the instances have been created?