Tidb dashboard modify port

The official documents are as follows

Use through reverse proxy TiDB Dashboard | PingCAP Docs

Now you want to change the default port 2379 Change it to 80 port , But when actually visiting , Always unable to respond normally ; The page is as follows

Nginx and  HAProxy Is the same ;

After the check ,Nginx Log error ：

2022/02/10 16:26:26 [crit] 20482#0: *24 open() "/usr/local/nginx/proxy_temp/3/00/0000000003" failed (13: Permission denied) while reading upstream, client: X.X.X.X, server: , request: "GET /dashboard/static/js/26.9f481c62.chunk.js HTTP/1.1", upstream: "http://X.X.X.X:2379/dashboard/static/js/26.9f481c62.chunk.js", host: "X.X.X.X", referrer: "http://X.X.X.X/dashboard/"

When the agent file size exceeds the configured size proxy_temp_file_write_size When the value of ,nginx The file will be written to the temporary directory （ The default is /proxy_temp）.

If nginx Yes /proxy_temp No authority , You can't write it in .

You can adjust /proxy_temp Permissions are configured nginx Users of , Or rough :  chmod -R  777 /usr/local/nginx/