Nginx配置反向代理，負載均衡以及前端項目的二級目錄

#user nobody;
//一般一個進程足夠了，你可以把連接數設得很大。
//如果有SSL、gzip這些比較消耗CPU的工作，而且是多核CPU的話，可以設爲和CPU的數量一樣。
//或者要處理很多很多的小文件，而且文件總大小比內存大很多的時候，也可以把進程數增加，
//以充分利用IO帶寬（主要似乎是IO操作有block）。
//詳細介紹
worker_processes 1;

#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;

#pid logs/nginx.pid;

events {
//原來安裝好nginx之後，默認最大的併發數爲1024，如果你的網站訪問量過大，已經遠遠超過1024這個併發數，那你就要修改worker_connecions這個值 ，這個值越大，併發數也有就大。當然，你一定要按照你自己的實際情況而定，也不能設置太大，不能讓你的CPU跑滿100%。

worker_connections  65535;

}

http {
include 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"';

#access_log  logs/access.log  main;

sendfile        on;
#tcp_nopush     on;

#keepalive_timeout  0;
keepalive_timeout  65;

#gzip  on;
//配置負載均衡相關
//weight 表示負載比例
upstream backend_server{
server 172.16.14.95 weight=1;
server 172.16.14.78 weight=1;
keepalive 60;
}

//配置Nginx相關server
server {
    listen       81;   端口號
    server_name  localhost;  
    #charset koi8-r;

    #access_log  logs/host.access.log  main;
    //配置反向代理路徑
    location /api {
    proxy_pass http://backend_server; //負載均衡的server
    proxy_set_header Host $http_host:$proxy_port;
    proxy_set_header X-Real-IP $remote_addr; 配置真實ip代理
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_http_version 1.1;   啓用http1.1 使用keepalive
    proxy_set_header Connection ""; 
    }
    配置vue或者react等前端項目二級目錄
location /resources/ {
    alias /usr/local/openresty/nginx/html/resources/;
    index index.html index.htm;
    try_files $uri $uri/ /resources/index.html;
    error_page 404 /index.html;
}

    #error_page  404              /404.html;

    # redirect server error pages to the static page /50x.html
    #
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   html;
    }

    # proxy the PHP scripts to Apache listening on 127.0.0.1:80
    #
    #location ~ \.php$ {
    #    proxy_pass   http://127.0.0.1;
    #}

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    #location ~ \.php$ {
    #    root           html;
    #    fastcgi_pass   127.0.0.1:9000;
    #    fastcgi_index  index.php;
    #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
    #    include        fastcgi_params;
    #}

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    #location ~ /\.ht {
    #    deny  all;
    #}
}


# another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
#    listen       8000;
#    listen       somename:8080;
#    server_name  somename  alias  another.alias;

#    location / {
#        root   html;
#        index  index.html index.htm;
#    }
#}


# HTTPS server
#
#server {
#    listen       443 ssl;
#    server_name  localhost;

#    ssl_certificate      cert.pem;
#    ssl_certificate_key  cert.key;

#    ssl_session_cache    shared:SSL:1m;
#    ssl_session_timeout  5m;

#    ssl_ciphers  HIGH:!aNULL:!MD5;
#    ssl_prefer_server_ciphers  on;

#    location / {
#        root   html;
#        index  index.html index.htm;
#    }
#}

}