vim /usr/local/nginx/conf/nginx.conf

user  root;   #root防止404错误
worker_processes  4;    #根据CPU核心数而定

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

events {
    worker_connections  65535;        #最大链接数
    use epoll;                        #新版本的Linux可使用epoll加快处理性能
}

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;

    #设置缓存
    server_names_hash_bucket_size 128;
    client_header_buffer_size 32k;
    large_client_header_buffers 4 32k;
    client_max_body_size 300m;
    proxy_redirect off;
    proxy_set_header Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
    proxy_connect_timeout 90;
    proxy_send_timeout 90;
    proxy_read_timeout 90;
    proxy_buffer_size 16k;
    proxy_buffers 4 64k;
    proxy_busy_buffers_size 128k;
    proxy_temp_file_write_size 128k; #设置缓存存储路径、存储方式、分配内存大小、磁盘最大空间、缓存期限 
    proxy_temp_path /data/fastdfs/cache/nginx/proxy_cache/tmp;
    proxy_cache_path /data/fastdfs/cache/nginx/proxy_cache levels=1:2 keys_zone=http-cache:200m inactive=1d max_size=30g;

    #设置group1的服务器
    upstream fdfs_group1 {
        server 192.168.53.72:8080 weight=1 max_fails=2 fail_timeout=30s;
        server 192.168.53.73:8080 weight=1 max_fails=2 fail_timeout=30s;
    }
    #设置group2的服务器
    upstream fdfs_group2 {
        server 192.168.53.74:8080 weight=1 max_fails=2 fail_timeout=30s;
        server 192.168.53.75:8080 weight=1 max_fails=2 fail_timeout=30s;
    }

server {
    listen       80;
    server_name localhost;

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

    #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;
    }

   #设置group1的负载均衡参数
    location /group1/M00 {
        proxy_next_upstream http_502 http_504 error timeout invalid_header;
        proxy_cache http-cache;
        proxy_cache_key $uri$is_args$args;
        proxy_cache_valid  200 304 12h;
        proxy_pass http://fdfs_group1;
        expires 30d;
    }

    #设置group2的负载均衡参数
    location /group2/M00 {
        proxy_next_upstream http_502 http_504 error timeout invalid_header;
        proxy_cache http-cache;
        proxy_cache_key $uri$is_args$args;
        proxy_cache_valid  200 304 12h;
        proxy_pass http://fdfs_group2;
        expires 30d;
    }
    
    #设置清除缓存的访问权限
    location ~/purge(/.*) {
        allow 127.0.0.1;
        deny all;
        proxy_cache_purge http-cache $1$is_args$args;
    }
}