nginx内核socket优化

参考：

http://www.linuxyan.com/web-server/240.html

修改配置文件(/etc/nginx/nginx.conf)

# For more information on configuration, see:
#   * Official English Documentation: http://nginx.org/en/docs/
#   * Official Russian Documentation: http://nginx.org/ru/docs/

user nginx;

worker_processes 4;
worker_cpu_affinity 0001 0010 0100 1000;
worker_rlimit_nofile 65536;

#client_header_buffer_size 4k;


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



events {
    worker_connections 65000;
    multi_accept on;
    use epoll;
}

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

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


    keepalive_timeout 600;
    client_header_buffer_size 4k;
    open_file_cache max=102400 inactive=20s;
    open_file_cache_valid 30s;
    open_file_cache_min_uses 1;


    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;

    types_hash_max_size 2048;

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

    # Load modular configuration files from the /etc/nginx/conf.d directory.
    # See http://nginx.org/en/docs/ngx_core_module.html#include
    # for more information.
    include /etc/nginx/conf.d/*.conf;

    upstream socket_nodes {
        #ip_hash;
        server 127.0.0.1:3721; #localhost
        server 192.168.0.131:3000; #Jary
        server 192.168.0.132:3000; #Tom
    }
    
    server {
        listen       3000 default_server;
        listen       [::]:80 default_server;
        server_name  _;
        root         /usr/share/nginx/html;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location / {
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection "upgrade";
          proxy_http_version 1.1;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header Host $host;
          proxy_pass http://socket_nodes;
        }

        error_page 404 /404.html;
            location = /40x.html {
        }

        error_page 500 502 503 504 /50x.html;
            location = /50x.html {
        }
    }
}