Nginx配置，413 Request Entity Too Large错误解决

今天有同事找我，说图片上传之后，不知道去哪里了。分析了一下问题，找到原因之后做了处理，这里简要记录一下。

问题原因：

1.首先后台log并无错误信息；

2.捡查了一下浏览器，发现network中有报错，413 Request Entity Too Large，但前台未报错。

解决办法：

1.备份Nginx配置文件；（个人习惯，免得修改之后，如果需要还原，忘记原来的配置）

2.查看当前Nginx配置文件：

[root@VM_0_16_centos nginx]# cat nginx.conf | grep client_max_body_size

client_max_body_size 10m;

结果发现涉及到很多项目，继续查询

cat /etc/nginx/nginx.conf | grep -C 10 client_max_body_size

得到结果如下：

[root@VM_0_16_centos nginx]# cat /etc/nginx/nginx.conf | grep -C 10 client_max_body_size
        # Load configuration files for the default server block.
        #include /etc/nginx/default.d/*.conf;

        location  ^~ /b1/ {
            proxy_pass http://b1_server/;
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_set_header  Host  $http_host;
            proxy_set_header Connection close;
            proxy_connect_timeout 5000ms;
            # client_max_body_size    10m;

        access_log  /logs/nginx/access_api_b1.log  main;
            error_log /logs/nginx/error_api_b1.log info;
        }

        location ^~ /bn/ {
            proxy_pass http://bn_server/;
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_set_header  Host  $http_host;
            proxy_set_header Connection close;
            proxy_connect_timeout 5000ms;
            # client_max_body_size    10m;

       access_log  /logs/nginx/access_api_bn.log  main;
           error_log /logs/nginx/error_api_bn.log info;
        }

    # 由于boss程序中web路径已经带/boss前缀,所以proxy_pass不能带/后缀,后续再调整,切记切记！
        location ^~ /boss/ {
            proxy_pass http://boss_server;
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_set_header  Host  $http_host;
            proxy_set_header Connection close;
            proxy_connect_timeout 5000ms;
            # client_max_body_size    10m;

        access_log  /logs/nginx/access_api_boss.log  main;
            error_log /logs/nginx/error_api_boss.log info;
        }

        location ^~ /detector/ {
            proxy_pass http://detector_server/;
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_set_header  Host  $http_host;
            proxy_set_header Connection close;
            proxy_connect_timeout 5000ms;
            client_max_body_size    10m;
        
        access_log  /logs/nginx/access_api_detector.log  main;
            error_log /logs/nginx/error_api_detector.log info;
        }

        location ^~ /sales/ {
            proxy_pass http://sales_server/;
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_set_header  Host  $http_host;
            proxy_set_header Connection close;
            proxy_connect_timeout 5000ms;
            # client_max_body_size    10m;

         access_log  /logs/nginx/access_api_sales.log  main;
            error_log /logs/nginx/error_api_sales.log info;
        }

        location ^~ /qn/prv/ {
            proxy_pass http://private.haochuang.cn/;
        }

        location ^~ /qn/pub/ {
--
            error_log /logs/nginx/error_admin_boss.log info;
        }

        location ^~ /boss/ {
            proxy_pass http://boss_server;
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_set_header  Host  $http_host;
            proxy_set_header Connection close;
            proxy_connect_timeout 5000ms;
            # client_max_body_size    10m;

        access_log  /logs/nginx/access_api_boss.log  main;
            error_log /logs/nginx/error_api_boss.log info;
        }
    
    location ^~ /stats/ {
            proxy_pass http://stats_server;
            proxy_set_header  X-Real-IP  $remote_addr;
            proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
            proxy_set_header  Host  $http_host;
            proxy_set_header Connection close;
            proxy_connect_timeout 5000ms;
            client_max_body_size    10m;

            access_log  /logs/nginx/access_api_stats.log  main;
            error_log /logs/nginx/error_api_stats.log info;
        }


     location ^~ /qn/prv/ {
            proxy_pass http://private.haochuang.cn/; 
　　　　}

3.修改配置文件：

location / {
            root   html;
            index  index.html index.htm;
   client_max_body_size    1000m;
  }

修改client_max_body_size 配置：

server
{
    listen   80;
    server_name  chat.erp.360buy.com;
    #access_log    /export/servers/nginx/logs/chat.erp.360buy.com;
    location / {
        proxy_pass     http://tomcat;
        client_max_body_size    10m; #表示最大上传10M，需要多大设置多大。
} }

3.重新加载配置文件，并重新加载nginx：

[root@VM_0_16_centos nginx]# /usr/sbin/nginx -c /etc/nginx/nginx.conf

nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)