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Martin Hope
user1641443
Asked: 2022-02-19 00:44:14 +0800 CST
  • 0

I have a backend node.js application(system directory) and a frontend react application(admin directory). I use nginx as the webserver.

I can load my frontend well. But when I refresh, it gives 404. I have looked in the nginx directives, but I'm not sure how it works, since I didn't setup this project. I know that react uses the react-router, which nginx is not aware of.

My nginx conf file is:

server {
    listen 80;
    server_name lcl.notification.com;
    root /home/development/www/notifications/system/public;
    access_log  /var/log/nginx/notify.access.log;
    error_log   /var/log/nginx/notify.error.log debug;
    rewrite_log on;
    client_max_body_size 10M;
    location / {
        return 301  https://www.google.com;
        break;
    }
    location /panel {
        alias /home/development/www/notifications/admin/build/;
        index index.html;
        try_files $uri $uri/ =404;
        # Include headers
        include includes/headers.conf;
    }

After login, it opens the /panel uri. But on refresh, it gives 404.

nginx node.js conf
Martin Hope
user1641443
Asked: 2018-08-22 05:17:11 +0800 CST
  • 0

My website gets overloaded at random times. I noticed too many apache processes and as a result it freezes. We don't have such traffic to cause this. At that moment all I can do is restart the server.

Trying to debug the issue I get this from mod_status. At some point i see too many processes without PID, in 'Open slot with no current process' state, around 75:

Srv PID Acc M   CPU SS  Req Conn    Child   Slot    Client  Protocol    VHost   Request
0-0 -   0/0/18  .   12.08   314 0   0.0 0.00    0.12    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
1-0 -   0/0/16  .   6.63    286 0   0.0 0.00    0.08    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
2-0 20533   0/34/34 _   45.02   7   0   0.0 0.29    0.29    213.140.194.20  http/1.1    any.com:80  GET /server-status/?refresh=5 HTTP/1.1
3-0 -   0/0/14  .   17.98   320 0   0.0 0.00    0.07    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
4-0 -   0/0/17  .   5.40    307 0   0.0 0.00    0.06    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
5-0 -   0/0/17  .   6.91    306 0   0.0 0.00    0.06    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
6-0 -   0/0/18  .   17.41   319 0   0.0 0.00    0.11    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
7-0 -   0/0/21  .   13.20   283 0   0.0 0.00    0.09    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
8-0 -   0/0/16  .   6.74    281 0   0.0 0.00    0.07    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
9-0 -   0/0/17  .   7.34    308 0   0.0 0.00    0.08    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
10-0    -   0/0/9   .   1.41    296 0   0.0 0.00    0.03    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
11-0    -   0/0/2   .   0.00    316 0   0.0 0.00    0.00    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
12-0    -   0/0/2   .   0.00    318 0   0.0 0.00    0.00    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
13-0    -   0/0/6   .   0.69    274 0   0.0 0.00    0.41    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0
14-0    -   0/0/4   .   1.12    292 0   0.0 0.00    0.02    ::1 http/1.1    any.com:80  OPTIONS * HTTP/1.0

What do all these mean? Can they be the cause of the overload?

centos