求助nginx 反向代理后出现的问题

[weixin_45518141]

小弟在本机上试用了一下nginx，目的是想把2台服务器，利用自己的本机负载分配，用户访问我的本机地址再跳转到后台的服务器中，但是我使用负载功能后就报403的错误和不能输入密码无响应，最重要就是图片也显示不全~请老师们看一下，该怎么办啊
下面的是配置




#user nobody;
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 {
worker_connections 1024;
}


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;

upstream web{

server 192.168.164.139:8080;
server 111.19.238.44:80;

}

server {
listen 8080;
server_name localhost;

#charset koi8-r;

#access_log logs/host.access.log main;

location / {
proxy_connect_timeout 2;
proxy_send_timeout 2;
proxy_read_timeout 2;

proxy_set_header HOST $host:$server_port;
#proxy_set_header Host $proxy_host;
client_body_buffer_size 256k;
client_max_body_size 100M;
proxy_set_header X-Real-IP $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Upgrade-Insecure-Requests 1;



proxy_buffer_size 256k;
proxy_buffers 4 256k;
proxy_busy_buffers_size 256k;
proxy_temp_file_write_size 256k;
proxy_next_upstream error timeout invalid_header http_500 http_503 http_404;
proxy_max_temp_file_size 128m;

proxy_pass http://web;
root html;
index index.html index.html;


location ~ \.(jpg|png|jpeg|bmp|gif|swf|css)$
{proxy_pass http://192.168.164.139:8080;
proxy_set_header Host $proxy_host;
proxy_set_header Origin "";
proxy_http_version 1.1;
}





}

#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;
# }
#}

}