503 Service Unavailable

Hello,

I hope you're doing well,

I've installed PHP FPM 7.4, And I've set this configurations for each user :

pm = dynamic
pm.max_children = 150
pm.start_servers = 20
pm.min_spare_servers = 10
pm.max_spare_servers = 20
pm.max_requests = 0
request_terminate_timeout = 0

For Apache :

Timeout 86400
ProxyTimeout 86400

And :

<IfModule proxy_fcgi_module>
    ProxyTimeout 86400

   <FilesMatch \.php$>
      SetHandler "proxy:unix:/opt/alt/php-fpm74/usr/var/sockets/user.sock|fcgi://localhost"
   </FilesMatch>
</IfModule>

But the script exicuted for 120-240 seconds and I got that message : Service Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

I've worked already with same configs but I don't know what happened

Please help me to solve this problem,

Thank you,

if you are using nginx then you would need to edit nginx conf also.

Are you using Apache only or Nginx, or a combo?

If Apache only, 503 error usually means you did not setup proxy app correctly. What is output of

cat /usr/local/apache/logs/error_log | grep :error

Do you have any users that you didn't apply this configuration to?

Are those sites working OK?

Hello again,

Thank you all for your reply,

I use apache only with php fpm ..

For the error logs I got :

Code: [Select]

[Fri Jun 25 14:30:53.169518 2021] [proxy_fcgi:error] [pid 31228:tid 140611063580416] [client 160.177.150.239:10610] AH01067: Failed to read FastCGI header
[Fri Jun 25 14:30:53.169605 2021] [proxy_fcgi:error] [pid 31228:tid 140611063580416] (104)Connection reset by peer: [client 160.177.150.239:10610] AH01075: Error dispatching request to :
I exicute script correctly, but after 240 seconds I got *Service Unavailable* even I've set 84000 as a timeout for apache & for proxy_fcgi_module and I've disabled :

Code: [Select]

#LoadModule reqtimeout_module modules/mod_reqtimeout.so
Thank you

Are you using WordPress?

If so, make sure you are running only 1 version of PHP-FPM.

Also in your php.ini, make sure opcache.fast_shutdown=0 is not commented out. By Default it is.

Hello Starburst,

Thank you for your reply,

No, I don't use Wordpress, I work on a web crawler and I want it to work all time ..

My VPS :

^{CPU Model: AMD EPYC 7282 16-Core Processor
CPU Details: 10 Core (2800 MHz)
RAM: 60 GBs}

For opcache.fast_shutdown=0 I did not installed it ..

I really don't know what happened

Is opcache.fast_shutdown=0 uncommented in the php.ini?

Be default it is commented out.

Also check out:
https://bobcares.com/blog/apache-error-failed-to-read-fastcgi-header/

Other than that I'm out of ideas.