nginx反向代理后发现图片和js、css等加载很慢，甚至加载不出来。

然后查看nginx的log,发现错误如下：

2021/05/1715:31:12 [crit] 29465#0: *10 open() "/usr/local/nginx/proxy_temp/1/00/0000000001" failed (13: Permission denied) while reading upstream, client: 220.178.25.22, server: localhost, request: "GET /testpay/bootstrap/css/bootstrap.min.css HTTP/1.1", upstream: "http://12.56.6.15:5555/testpay/bootstrap/css/bootstrap.min.css", host: "90.163.226.54:90", referrer: "http://90.163.226.54:90/testpay/"

2021/05/1715:31:12 [crit] 29465#0: *16 open() "/usr/local/nginx/proxy_temp/2/00/0000000002" failed (13: Permission denied) while reading upstream, client: 220.178.25.22, server: localhost, request: "GET /testpay/bootstrap/js/jquery.min.js HTTP/1.1", upstream: "http://12.56.6.15:7777/testpay/bootstrap/js/jquery.min.js", host: "90.163.226.54:90", referrer: "http://90.163.226.54:90/testpay/"

图片124K

NGINX反向代理设置如下临时解决问题

proxy_buffer_size 4k; #设置代理服务器（nginx）保存用户头信息的缓冲区大小

proxy_buffers 8 32k; #proxy_buffers缓冲区，网页平均在32k以下的设置

proxy_busy_buffers_size 64k; #高负荷下缓冲大小（proxy_buffers*2）

proxy_temp_file_write_size 64k;#设定缓存文件夹大小，大于这个值，将从upstream服务器传

后天几天偶然发现原来是因为nginx我当时更改了用户从nobody到www，导致nginx下proxy_temp没有写权限导致，chown -R www.www proxy_temp彻底解决