#使用的用户和组,window下不指定 
#user nobody; 
#指定工作衍生进程数(一般等于CPU总和数或总和数的两倍，例如两个四核CPU，则总和数为8) 
worker_processes 1; 
#指定错误日志文件存放路径，错误日志级别可选项为【debug|info|notice|warn|error|crit】 
#error_log logs/error.log; 
#error_log logs/error.log notice; 
error_log logs/error.log info; 
#指定pid存放路径 
#pid logs/nginx.pid; 

#工作模式及连接数上限 
events { 
    #使用网络I/O模型，Linux系统推荐使用epoll模型，FreeBSD系统推荐使用kqueue;window下不指定 
    #use epoll; 
    #允许的连接数 
    worker_connections 1024; 
} 

#设定http服务器，利用他的反向代理功能提供负载均衡支持 
http { 
    #设定mime类型 
    include mime.types; 
    default_type application/octet-stream; 
    #设定日志格式 
    #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; 
    log_format main '$remote_addr - $remote_user [$time_local]' 
    '"$request" $status $bytes_sent' 
    '"$http_referer" "$http_user_agent" "$http_x_forwarded_for"' 
    '"$gzip_ratio"'; 
    log_format download '$remote_addr - $remote_user [$time_local]' 
    '"$request" $status $bytes_sent' 
    '"$http_referer" "$http_user_agent"' 
    '"$http_range" "$sent_http_content_range"'; 

    #设定请求缓冲 
    client_header_buffer_size 1k; 
    large_client_header_buffers 4 4k; 

    #设定access log 
    access_log logs/access.log main; 
    client_header_timeout 3m; 
    client_body_timeout 3m; 
    send_timeout 3m; 

    sendfile on; 
    tcp_nopush on; 
    tcp_nodelay on; 
    #keepalive_timeout 0; 
    keepalive_timeout 65; 

    #开启gzip模块 
    gzip on; 
    gzip_min_length 1100; 
    gzip_buffers 4 8k; 
    gzip_types text/plain application/x-javascript text/css application/xml; 

    output_buffers 1 32k; 
    postpone_output 1460; 

    server_names_hash_bucket_size 128; 
    client_max_body_size 80m;  #最大上传的文件大小。

    fastcgi_connect_timeout 300; 
    fastcgi_send_timeout 300; 
    fastcgi_read_timeout 300; 
    fastcgi_buffer_size 64k; 
    fastcgi_buffers 4 64k; 
    fastcgi_busy_buffers_size 128k; 
    fastcgi_temp_file_write_size 128k; 
    gzip_http_version 1.1; 
    gzip_comp_level 2; 
    gzip_vary on; 

    #设定负载均衡的服务器列表 
    upstream localhost { 
        #根据ip计算将请求分配各那个后端tomcat，可以解决session问题 
        ip_hash; 
        #同一机器在多网情况下，路由切换，ip可能不同 
        #weigth参数表示权值，权值越高被分配到的几率越大 
        #server localhost:8080 weight=1; 
        #server localhost:9080 weight=1; 
        server 192.168.0.4:801 max_fails=2 fail_timeout=600s; 
        server 192.168.0.4:802 max_fails=2 fail_timeout=600s; 
    } 

    #设定虚拟主机 
    server { 
        listen 800; 
        server_name 192.168.0.4; 

        #charset koi8-r; 
        charset UTF-8; 
        #设定本虚拟主机的访问日志 
        access_log logs/host.access.log main; 
        #假如访问 /img/*, /js/*, /css/* 资源，则直接取本地文档，不通过squid 
        #假如这些文档较多，不推荐这种方式，因为通过squid的缓存效果更好 
        #location ~ ^/(img|js|css)/ { 
            # root /data3/Html; 
            # expires 24h; 
        # } 
        #对 "/" 启用负载均衡 
        location / { 
            root html; 
            index index.html index.htm index.aspx; 

            proxy_redirect off; 
            #保留用户真实信息 
            proxy_set_header Host $host; 
            proxy_set_header X-Real-IP $remote_addr; 
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
            #允许客户端请求的最大单个文件字节数 
            client_max_body_size 10m; 
            #缓冲区代理缓冲用户端请求的最大字节数，可以理解为先保存到本地再传给用户 
            client_body_buffer_size 128k; 
            #跟后端服务器连接超时时间 发起握手等候响应超时时间 
            proxy_connect_timeout 12; 
            #连接成功后 等待后端服务器响应时间 其实已进入后端的排队之中等候处理 
            proxy_read_timeout 90; 
            #后端服务器数据回传时间 就是在规定时间内后端服务器必须传完所有数据 
            proxy_send_timeout 90; 
            #代理请求缓存区 这个缓存区间会保存用户的头信息一共Nginx进行规则处理 一般只要能保存下头信息即可 
            proxy_buffer_size 4k; 
            #同上 告诉Nginx保存单个用的几个Buffer最大用多大空间 
            proxy_buffers 4 32k; 
            #如果系统很忙的时候可以申请国内各大的proxy_buffers 官方推荐 *2 
            proxy_busy_buffers_size 64k; 
            #proxy 缓存临时文件的大小 
            proxy_temp_file_write_size 64k; 
            proxy_next_upstream error timeout invalid_header http_500 http_503 http_404; 
            proxy_max_temp_file_size 128m; 

            proxy_pass http://localhost; 
        } 

        #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; 
        # server_name localhost; 

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

        # ssl_session_timeout 5m; 

        # ssl_protocols SSLv2 SSLv3 TLSv1; 
        # ssl_ciphers HIGH:!aNULL:!MD5; 
        # ssl_prefer_server_ciphers on; 

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